Opinion for the Court filed by Circuit Judge SENTELLE.
Dissenting opinion filed by Circuit Judge ROGERS.
SENTELLE, Circuit Judge:
Murphy Exploration and Production Co. (“Murphy”) appeals the District Court’s dismissal, for lack of jurisdiction, of its claim that the Department of the Interior (“DOI”) failed to reimburse it for mining royalty overpayments. Murphy’s lawsuit invokes the Federal Oñ and Gas Royalty Simplification and Fairness Act (“FOGRS-FA”), which confers jurisdiction on courts to consider challenges to “administrative proceedings” that the agency fails to resolve within 33 months after they are commenced. Murphy proposes that it commenced such an “administrative proceeding” when it submitted a refund request to DOI. Because we conclude that FOGRSFA’s 33-month deadline period begins to run when a party submits a refund request, we hold that the district court erroneously concluded that it lacked jurisdiction to hear Murphy’s claim.
I. BACKGROUND
Several acts of Congress confer on DOI the authority to issue leases to mining companies that wish to extract minerals from lands administered by the federal government. See, e.g., the Mineral Leasing Act, 30 U.S.C. § 181 et seq.; the Mineral Leasing Act for Acquired Lands, 30 U.S.C. § 351 et seq.; and the Outer Continental Shelf Lands Act, 43 U.S.C. § 1331 et seq. As a condition of their leases, lessees must pay the government royalties based on the value of the minerals they produce.
[476]*476In response to a series of court decisions between 1988 and 1997, DOI’s Minerals Management Service (“MMS”) altered the method it uses to calculate the royalties that producers must pay when they extract gas from its lands. See Diamond Shamrock Exploration Co. v. Hodel, 853 F.2d 1159 (5th Cir.1988); Independent Petroleum Ass’n of Am. v. Babbitt, 92 F.3d 1248 (D.C.Cir.1996); In re Century Offshore Mgmt. Corp., 111 F.3d 443 (6th Cir.1997). Royalties now are based on a company’s “gross proceeds.” A gas producer’s “gross proceeds” include “buydowns” (moneys paid by a purchaser to reduce the price at which gas covered by an initial contract will be sold in the future), but do not include “buyouts” (payments by a gas purchaser to terminate a contract), or “take-or-pay payments” (payments a purchaser is obliged to make even if it does not take the gas it contracted to buy). Mobil Exploration and Producing U.S., Inc., MMS-94-0151-OCS (1998); Antelope Prod. Co., MMS-96-0068-O&G (1998).
A producer may challenge an MMS order to pay royalties in two ways. First, it may pursue an administrative appeal. 30 C.F.R. Pt. 290. Second, the producer is entitled to immediate judicial review if the agency fails to resolve the royalties dispute timely. The latter type of challenge is authorized by FOGRSFA. Enacted in 1996, FOGRSFA requires DOI’s Secretary to “issue a final decision in any administrative proceeding, including any administrative proceedings pending on August 13, 1996, within 33 months from the date such proceeding was commenced or 33 months from August 13, 1996, whichever is later.” 30 U.S.C. § 1724(h)(1). If the Secretary fails to do so within the allotted time, she “shall be deemed to have issued a final decision in favor of the Secretary ... and the appellant shall have a right to judicial review of such deemed final action in accordance with Title 5.” Id. § 1724(h)(2)(B). FOGRSFA further defines “administrative proceeding” as “any Department of the Interior- agency process in which a demand, decision or order issued by the Secretary ... is subject to appeal or has been appealed.” Id. § 1702(18). In other words, DOI’s failure to resolve an “administrative proceeding” relating to a royalties dispute within 33 months triggers the right to immediate judicial review.
In 1999, DOI promulgated regulations interpreting FOGRSFA’s 33-month deadline. 64 Fed.Reg. 26,240 (1999). As the agency sees it, § 1724(h)’s reference to “any administrative proceedings” includes only administrative appeals — or, to say the same thing, the 33 months begin to run only when a party files a notice of appeal with the agency. “For appeals involving Federal oil and gas leases covered by this new provision, DOI has 33 months from the date a proceeding is commenced to complete all levels of administrative review.” Id. at 26,240 (emphasis added). If DOI fails to “decide the appeal within 33 months, the appeal is deemed decided for or against DOI, depending on the type of order and the monetary amount at issue in the appeal.” Id. (emphasis added). FOGRSFA’s deadline is not triggered, for example, “on the date that an MMS order is received by the recipient.” Id. at 26,-248.
On February 3, 1989, Murphy — a producer that holds oil and gas leases on a number of DOI-administered lands — submitted a refund request claiming that the agency owed it some $4.1 million for past royalty overcharges. Murphy’s claim was not resolved for nearly ten years. On November 3, 1998, MMS issued an order instructing Murphy to pay it nearly $368,000 in -outstanding royalties. The agency determined that Murphy had overpaid by nearly $990,000 on certain contracts, but that it owed $1.3 million in [477]*477royalties on certain others. Murphy appealed administratively on December 4, 1998.
On March 5, 1999, with its administrative appeal still pending, Murphy challenged the November 3 order in the United States District Court for the District of Columbia. Murphy’s lawsuit cited FOGRSFA for the proposition that DOI’s failure to resolve timely its refund request was a final agency action entitling it to immediate judicial review. Because, Murphy argued, its refund request set in motion an “agency process” that could result in the Secretary issuing “a demand, decision or order” that “is subject to appeal,” 30 U.S.C. § 1702(18), it therefore was an “administrative proceeding” within the meaning of FOGRSFA. And because its request had been pending for more than 33 months when the statute was enacted, the company was entitled to immediate judicial review. Murphy also argued that, even assuming the validity of DOI’s interpretation of the statute, it was entitled to immediate judicial review of one portion of its refund request — a December 1993 DOI order that it had appealed and that the agency later rescinded. Finally, Murphy argued that, quite apart from FOGRSFA, the expiration of nearly ten years from the filing of its refund request to DOI’s November 1998 order constituted an unreasonable delay under Telecommunications Research, & Action Center v. FCC, 750 F.2d 70 (D.C.Cir.1984).
The district court on January 27, 2000 dismissed Murphy’s suit for lack of jurisdiction, on the grounds that FOGRSFA’s 33-month deadline had not yet expired. Murphy Exploration & Prod. Co. v. Dep’t of the Interior, No. 99-570 (D.D.C. Jan. 27, 2000). The court analyzed the statute according to the two-step framework established in Chevron U.S.A. Inc. v. NRDC, 467 U.S. 837, 104 S.Ct. 2778, 81 L.Ed.2d 694 (1984). At step one, the court found FOGRSFA to be ambiguous on the question whether a refund request (or any other proceeding that is not an appeal) is one of the “any administrative proceedings” that triggers the statute’s 33-month deadline. Because “Congress cannot be said to have spoken directly to the specific issue at hand,” the court proceeded to step two and deferred to DOI’s interpretation that FOGRSFA’s 33-month period applies only to administrative appeals. Murphy Exploration, slip op. at 13. The court also rejected Murphy’s alternative claim that the passage of ten years since it filed its refund request was an unreasonable delay, and hence a reviewable action: “[wjhile the ten-year delay in this case is indeed worrisome, it does not constitute final agency action.” Id. at 10.
II. ANALYSIS
A. Procedural issues
DOI identifies two procedural hurdles which it contends prevent this Court from considering Murphy’s argument that the district court had jurisdiction to hear its suit. Both are easily cleared. The agency first claims that Murphy did not preserve this issue for appeal since its complaint did not expressly dispute the lawfulness of DOI’s regulations. In fact, Murphy’s claim that the district court had jurisdiction is properly before us. The complaint’s failure to specifically attack the regulations is irrelevant, since Murphy’s suit was not a facial challenge. Rather, the company sought an order to compel DOI to refund what it claimed were royalties overpayments. It was not until the agency challenged the district court’s jurisdiction — on the grounds that FOGRSFA’s 33-month deadline had not yet expired— that the validity of the regulations became an issue. In response to DOI’s motion to dismiss, Murphy explained its view that, agency regulations notwithstanding, [478]*478FOGRSFA gives it the right to immediate judicial review. Murphy therefore has preserved this issue for appeal.
DOI further proposes that Murphy waived its challenge to the agency’s interpretation of FOGRSFA because it did not advance that view during the rulemaking process. To be sure, in Ohio v. EPA, 997 F.2d 1520 (D.C.Cir.1993), we declined to consider an argument that the parties had waived “by failing to raise it during rule-making proceedings before the agency.” Id. at 1528. But Ohio is distinguishable. In that case, the parties had participated in the promulgation of an EPA rule that they then judicially challenged. Because they had taken part in that prior proceeding, it made sense to speak of “the States’ failure to raise [their argument] below.” Id. By contrast, the record here does not reveal that Murphy participated in the rulemaking that produced DOI’s regulations. Because Murphy had no role in the rulemaking, it cannot be said to have “waived” its argument by failing to advance it during those proceedings.
B. Chevron and the Standard of Review
The basic issue in this case is one of statutory construction. Does FOGRS-FA’s definition of “any administrative proceeding,” the commencement of which triggers the statute’s 33-month deadline, embrace the filing of a refund request? Or is “any administrative proceeding” limited to administrative appeals? Because our task is to measure DOI’s regulations against FOGRSFA’s text, this case might seem to be an appropriate one for analysis under the rubric of Chevron. Under Chevron, a court must first determine “whether Congress has directly spoken to the precise question at issue.” 467 U.S. at 842, 104 S.Ct. 2778. If so, that “is the end of the matter; for the court, as well as the agency, must give effect to the unambiguously expressed intent of Congress.” Id. at 842-43, 104 S.Ct. 2778. If not—that is, if “the statute is silent or ambiguous with respect to the specific issue”—we will defer to “a reasonable interpretation made by the administrator of an agency.” Id. at 843, 844, 104 S.Ct. 2778.
We conclude, however, that Chevron deference is inappropriate in this case. Chevron does not apply to statutes that, like § 1724(h), confer jurisdiction on the federal courts. It is well established that “[i]nterpreting statutes granting jurisdiction to Article III courts is exclusively the province of the courts.” Ramey v. Bowsher, 9 F.3d 133, 136 n. 7 (D.C.Cir.1993); see also Reeb v. Economic Opportunity Atlanta, Inc., 516 F.2d 924, 926 (5th Cir.1975) (“The courts, however, have to make their own determination whether the district court has jurisdiction, rather than defer to the [agency] in the first instance.”); cf. Crandon v. United States, 494 U.S. 152, 177, 110 S.Ct. 997, 108 L.Ed.2d 132 (1990) (Scalia, J., concurring in the judgment) (arguing that Chevron deference is inapplicable to criminal statutes, which are “not administered by any agency but by the courts”). As the Supreme Court has explained, when Congress has “established an enforcement scheme” that gives a party “direct recourse to federal court,” it is “inappropriate to consult executive interpretations of [the jurisdiction-conferring statute] to resolve ambiguities surrounding the scope of [the party’s] judicially enforceable remedy.” Adams Fruit Co., Inc. v. Barrett, 494 U.S. 638, 650, 110 S.Ct. 1384, 108 L.Ed.2d 585 (1990).
A principal reason why courts pay agencies no deference on jurisdiction-conferring statutes is that such statutes do not grant powers to agencies. As the Supreme Court has explained, “a congressional delegation of administrative authority” is a “precondition to deference under Chevron.” Id. at 649, 110 S.Ct. 1384. Unless [479]*479the agency is the recipient of congressionally delegated power, there is no reason to defer to its interpretations of the statute that does the delegating. The typical Chevron case involves Congress extending an administrative power to an agency—for instance, an act that grants DOI the authority to administer federally owned lands, or a statute empowering the Environmental Protection Agency to regulate nitrogen-oxide emissions., A jurisdiction-conferring statute, by contrast, grants judicial power to the courts—namely the power to hear certain cases or controversies. Because jurisdiction-conferring statutes do not delegate authority to administrative agencies, courts do not extend Chevron deference to an agency’s construction of them.
It is true that the statute before us contemplates a regulatory role for the agency. However, the implicit delegation of duties concerning the regulations for administrative appeals is limited to precisely that subject and does not extend by its terms or placement to any implication of authority to the agency to “regulate the scope of the judicial power vested by the statute.” Id. at 650, 110 S.Ct. 1384. As Justice Marshall wrote in Adams Fruit, the fact that “Congress envisioned ... a role for [an administrative agency] in administering [a] statute,” by itself “does not empower the Secretary to regulate the ■ scope of the judicial power vested by the statute.” Id. Just so here. The fact that an agency has made a determination such as the establishment of regulations governing administrative appeals, does not empower it to “ ‘bootstrap itself in an area in which it has no jurisdiction,’ ” id. (quoting Federal Maritime Comm’n v. Seatrain Lines, Inc., 411 U.S. 726, 745, 93 S.Ct. 1773, 36 L.Ed.2d 620 (1973) (specifically the grant of jurisdiction to the courts)).
Moreover, administrative agencies have no particular expertise in determining the scope of an Article III court’s jurisdiction. Of course, “practical agency expertise is one of the principal justifications behind Chevron deference.” Pension Benefit Guar. Corp. v. LTV Corp., 496 U.S. 633, 651-52, 110 S.Ct. 2668, 110 L.Ed.2d 579 (1990). Absent congressional delegation, if an agency has promulgated a regulation outside the scope' of its specialized knowledge, courts will not defer to it. See, e.g., Professional Reactor Operator Soc’y v. NRC, 939 F.2d 1047, 1051 (D.C.Cir.1991) (affording no Chevron deference to agency interpretations of statutes “outside the agency’s particular expertise and special charge to administer”). It'goes without saying that the jurisdiction of the federal courts is outside agencies’ expertise. See, e.g., Florida Manufactured Hous. Ass’n, Inc. v. Cisneros, 53 F.3d 1565, 1574 n. 2 (11th Cir.1995); Ramey, 9 F.3d at 136 n. 7 (explaining that “agencies can bring no particular expertise to the subject”). Our holding that DOI’s' interpretation of FOGRSFA’s 33-month deadline is entitled to no deference thus is but a specific application of the general principle that an agency’s regulations deserve no deference where they proceed neither from a congressional delegation nor from agency expertise.
The inapplicability of Chevron to jurisdiction-conferring statutes is also informed by a federal court’s obligation to consider sua sponte its jurisdiction to hear . a case. See, e.g., Citizens for Abatement of Aircraft Noise, Inc. v. Metropolitan Wash. Airports Auth., 917 F.2d 48, 53 (D.C.Cir.1990) (“[I]t is well established that a court of appeals must first satisfy itself of its own jurisdiction, sua sponte if necessary, before proceeding to the merits.”), aff'd, 501 U.S. 252, 111 S.Ct. 2298, 115 L.Ed.2d 236 (1991). Courts have an obligation to examine the source of their own power. In the, same way that a court [480]*480must determine for itself that it has the jurisdiction to hear a dispute, even if the parties .have so stipulated, a court must determine the scope of a congressional conferral of jurisdiction without consulting the views of an agency. Put another way, neither the parties to a private action nor an administrative agency may dictate the scope of an Article III court’s jurisdiction.
C. Jurisdiction under FOGRSFA
Because we conclude that the Chevron framework is inapplicable to FOGRS-FA’s conferral of jurisdiction on the federal courts, we must decide, as an original matter, whether the district court had jurisdiction to hear Murphy’s lawsuit. The outcome depends on what the meaning of the words “any administrative proceeding” is. More precisely, we must consider whether a refund request falls within the statute’s definition of “any administrative proceeding”—in other words, whether FOGRSFA’s 33-month deadline begins to run when a party files a request for a refund. We hold that it does.
As always, in interpreting a statute, we begin with the text of the statute itself. Carter v. United States, 530 U.S. 255, 120 S.Ct. 2159, 2170, 147 L.Ed.2d 203 (2000) (“In analyzing a statute, we begin by examining the text.”). As noted above, '30 U.S.C. § 1724(h)(1) obliges DOI’s Secretary to “issue a final decision in any administrative proceeding, including any administrative proceedings pending on August 13, 1996, within 33 months from the date such proceeding was commenced or 33 months from August 13, 1996, whichever is later.” If she fails to do so, FOGRS-FA establishes that she “shall be deemed to have issued a final decision in favor of the Secretary ... and the appellant shall have a right to judicial review of such deemed final action in accordance with Title 5.” Id. § 1724(h)(2). The statute further defines “administrative proceeding” as “any Department of the Interior agency process in which a demand, decision or order issued by the Secretary ... is subject to appeal or has been appealed.” Id. § 1702(18).
We conclude that Murphy’s request that DOI refund its royalty overpayments triggered an “administrative proceeding” within the meaning of § 1702(18). FOGRSFA makes clear that a private party’s refund request is a type of “demand.” A “demand” is “a separate written request by a lessee ... which asserts an obligation due the lessee ... that provides a reasonable basis to conclude that the obligation in the amount of the demand is due and owing.” Id. § 1702(23)(B). Because Murphy’s refund request “assert[ed] an obligation” on the part of DOI to compensate it for past royalty overpayments, it was a “demand” for the purposes of FOGRSFA’s 33-month deadline. And, because Murphy’s “demand” set in motion an “agency process” that could culminate in a DOI order that would be “subject to appeal,” it triggered an “administrative proceeding.”
Moreover, FOGRSFA contemplates that both DOI and private parties are capable of making “demands.” See id. § 1702(23)(A) (defining DOI-issued “demands”); id. § 1702(23)(B) (defining private-party-issued “demands”). To be sure, the statute defines “administrative pro--ceeding” to include “a demand, decision or order issued by the Secretary.” Id. § 1702(18) (emphasis added). The placement of “issued by the Secretary” arguably implies that the italicized phrase modifies “demand,” “decision,” and “order.” On this interpretation, a private party’s “demand” does not, simply by virtue of being a “demand,” set in motion an “administrative proceeding.” Rather, an “administrative proceeding” can be triggered only by a particular type of “demand”— [481]*481viz., one that has been “issued by the Secretary.”
This strikes us as an implausible reading. If § 1702(18)’s reference to “demand” is read to denote only that class of “demands” that have been issued by DOI’s Secretary, then the term is entirely redundant. This is so because all DOI issued “demands” are also “orders.” Id. § 1702(23)(A) (defining “demand” to include only a request by a lessee or “an order to pay issued by the Secretary ... to a lessee”). The fact that “demand” and “order” are separately enumerated suggests that Congress viewed them as separate categories. See Gustafson v. Alloyd Co., 513 U.S. 561, 574, 115 S.Ct. 1061, 131 L.Ed.2d 1 (1995) (instructing courts to “avoid a reading [of statutory language] which renders some words altogether redundant”); Parker v. Califano, 561 F.2d 320, 325 (D.C.Cir.1977) (invoking “the familiar principle that statutory language should be construed so as to avoid redundancy”). We will not assume that Congress intended the definition of “demand” to be perfectly coextensive with “order.” Rather, we conclude that “demand” includes both orders to pay issued by DOI, and refund requests submitted by private parties. Either is sufficient to set in motion an “administrative proceeding” within the meaning of § 1702(18) — and, hence, to trigger FOGRSFA’s 33-month deadline.
DOI’s interpretation of “administrative proceeding” is an unconvincing one for the additional reason that it reads “subject to appeal” out of the statute. FOGRSFA expressly defines as an “administrative proceeding” a “demand, decision, or order” that either “has been appealed” or “is subject to appeal." 30 U.S.C. § 1702(18) (emphasis added). But as DOI sees it, “administrative proceeding” refers only to an order that has been appealed, not to an order that could be appealed. 64 Fed.Reg. 26,240, 26,240 (1999) (stating that “DOI has 33 months from, the date a proceeding is commenced to complete all levels of administrative review” (emphasis added)). Of course, when “construing a statute we are obliged to give effect, if possible, to every word Congress used.” Reiter v. Sonotone Corp., 442 U.S. 330, 339, 99 S.Ct. 2326, 60 L.Ed.2d 931 (1979). DOFs reading, under which “subject to appeal” lacks any force, contradicts the “endlessly reiterated principle of statutory construction ... that all words in a statute are to be assigned meaning, and that nothing therein is to be construed as surplusage.”. Qi-Zhuo v. Meissner, 70 F.3d 136, 139 (D.C.Cir.1995); see also Halverson v. Slater, 129 F.3d 180, 185 (D.C.Cir.1997) (invoking “the familiar doctrine that the Congress cannot be presumed to do a futile thing”).
Nor is it significant that § 1724(h) is entitled “appeals and final agency action.” It is true, as DOI argues, that “the title of a statute and the heading of a section are tools available for the resolution of a doubt about the meaning of a statute.” Almendarez-Torres v. United States, 523 U.S. 224, 234, 118 S.Ct. 1219, 140 L.Ed.2d 350 (1998) (internal quotation and citation omitted). But as AlmendarezTorres makes plain, a section’s title is a useful device only where its “meaning” is in “doubt.” “For interpretative purposes, [it is] of use only when [it] shed[s] light on some ambiguous word or phrase.” Pennsylvania Dep’t of Corrs. v. Yeskey, 524 U.S. 206, 212, 118 S.Ct. 1952, 141 L.Ed.2d 215 (1998) (citation omitted). When a statute is unambiguous, its title cannot be used to “limit the plain meaning of the text.” Id. And as we have explained, FOGRSFA’s definition of “administrative proceeding” is plain: The category “administrative proceeding” includes a private party’s “demand,” which in turn includes a refund request.
[482]*482Even if we accept DOI’s invitation to consult § -1724(h)’s title, the fact that it speaks of “appeals” does not compel the conclusion that “final agency action” cannot obtain unless a party has filed an administrative appeal. For in addition to “appeals,” § 1724(h)’s title also includes “final agency action.” The subsection performs two functions: It both states that DOI’s orders are subject to administrative appeal, and defines when final agency action occurs. It does not imply that an “appeal” is a sine qua non without which “final agency action” cannot exist.
Nothing in our dissenting colleague’s extended discussion of the canon of the last antecedent disturbs our conclusion that the statutory phrase “issued by the Secretary” does not modify “demand.” If anything, it supports that conclusion. Under that canon, as the dissent reminds us, a subsequent modifying phrase “refer[s] solely to the last antecedent, which consists of the last word, phrase, or clause....” Dissent at 483 (quoting 2A NORMAN SingeR, Statutes AND Statutory Construction § 47:33 (6th ed.2000)). But that same source confirms that a subsequent phrase may modify an antecedent “phrase,” “clause,” or “word.” Therefore, there is no reason to conclude that “issued by the Secretary” modifies the entire preceding phrase (“demand, decision, or order”), as opposed to the preceding word (“order”). Indeed, the rule as easily supports our conclusion that “issued by the Secretary” does not modify the comparatively remote word “demand” as the dissent’s conclusion that “issued by the Secretary” modifies the phrase “demand, decision, or order.” The rule of the last antecedent may be sound “grammar,” Dissent at 483, 484, but it does not dispose of this case.
We conclude that Murphy’s February 3, 1989 refund request set in motion an “administrative proceeding” within the meaning of FOGRSFA. Because Murphy’s request was pending far longer than 33 months when the statute became effective on August 16, 1996, DOI’s failure to resolve it is deemed a “final decision” that triggered a right to immediate judicial review. The district court therefore erred when it concluded that it lacked jurisdiction to hear Murphy’s lawsuit.
D. Miscellany
Because we hold that the district court had jurisdiction under FOGRSFA, we need not reach Murphy’s alternative argument that the delay between the filing of the refund request and the November 1998 order — which the district court described as “indeed worrisome” but not “final agency action” — triggered a right to judicial review under Telecommunications Research & Action Center v. FCC, 750 F.2d 70 (D.C.Cir.1984). Because we conclude that the entirety of Murphy’s refund request was within the district court’s jurisdiction, we need not address Murphy’s alternative claim that the court had jurisdiction over one specific portion: its challenge to DOI’s December 1993 order.
III. CONCLUSION
Chevron deference is inappropriate in this case because FOGRSFA’s conferral of jurisdiction is a grant of power to the federal courts, not to an administrative agency. Applying de novo review, we conclude that a refund request is an “administrative proceeding” within the meaning of FOGRSFA. In other words, the statute’s 33-month deadline begins to run when a party submits a refund request. The district court therefore had jurisdiction to hear Murphy’s challenge to DOI’s November 1998 order, and we reverse its dismissal of Murphy’s lawsuit.