ORDER AND JUDGMENT
HARRIS L. HARTZ, Circuit Judge.
After entering into a plea agreement that included a broad appeal waiver, Defendant Jaime Tellez-Castrejon pleaded guilty on May 25, 2016, to one count of illegal reentry of a previously removed alien following a felony conviction. See 8 U.S.C. § 1326(a) and (b)(1). He was sentenced on August 25, 2016, to 18 months' imprisonment. Falling well below the 10-year maximum, the sentence sat at the bottom of the advisory guidelines range of 18 to 24 months. Despite the appeal waiver, Defendant filed an appeal challenging his sentence as substantively unreasonable. In its response brief, the government requests this court to enforce the waiver under United States v. Hahn, 359 F.3d 1315 (10th Cir. 2004) (en banc) (per curiam). We grant the request and dismiss this appeal.
Hahn set forth three factors to consider in evaluating an appeal waiver: "(1) whether the disputed appeal falls within the scope of the waiver of appellate rights; (2) whether the defendant knowingly and voluntarily waived his appellate rights; and (3) whether enforcing the waiver would result in a miscarriage of justice." Id. at 1325. We need not address the factors because the opening brief submitted by counsel for Defendant does not address the appeal waiver (other than noting that the government had not filed a motion to enforce it) and no reply brief was filed. See United States v. Porter, 405 F.3d 1136, 1143 (10th Cir. 2005) (declining to address Hahn factor not contested by defendant). But in any event, our independent review of the record confirms that all Hahn factors support enforcing the waiver.
First, the issue raised by Defendant falls within the scope of the appeal waiver. The waiver provides:
Plea Agreement, R., Vol. I at 7. The sentence imposed on Defendant does not trigger either the first or second exception to the waiver—(1) the sentence falls below the statutory maximum, and (2) it was calculated based on an offense level of nine. And the third exception does not apply because the government has not appealed the sentence. Second, the record reflects that Defendant knowingly and voluntarily waived his right to appeal. The plea agreement that he signed shows both that he understood that he had a right to appeal and that he chose to "knowingly and voluntarily" waive most of that right. Id. Before pleading guilty he also signed an additional document in which he acknowledged that he had agreed to be bound by the appeal waiver in the plea agreement. Moreover, the district court confirmed with him at the plea hearing that he understood the nature of the charge and the maximum penalty, that he understood the consequences of the appeal waiver, and that he was entering his plea voluntarily. The court also confirmed that the plea agreement and the additional document were presented to him in Spanish. Finally, we see nothing to suggest that enforcement of the appeal waiver would cause a miscarriage of justice.