Luther D. Wilson, Texas prisoner # 810897, was convicted after a jury trial of aggravated sexual assault and was sentenced to life imprisonment. He seeks a certificate of appealability (COA) to appeal the district court’s denial of his 28 U.S.C. § 2254 application.

A timely notice of appeal “is a mandatory precondition to the exercise of appellate jurisdiction.” Wilkens v. Johnson, 238 *768 F.3d 328, 330 (5th Cir. 2001). This court must examine the basis of its jurisdiction on its own motion if necessary. Id. Wilson did not file his notice of appeal within 30 days of the entry of the district court’s judgment on January 6, 2004. See Fed. R. App. P. 4(a)(1)(A). He asserts that he did not receive notice of entry of judgment until April 29, 2004. Although Wilson filed a motion to reopen the time for filing a notice of appeal, which the district court granted, this motion was made more than seven days after Wilson received notice of entry of the district court’s judgment. Therefore, the district court lacked authority to grant the motion to reopen, and Wilson’s appeal is untimely. See Fed. R.App. P. 4(a)(6); Wilkens, 238 F.3d at 332, 335-36.

The appeal is DISMISSED for lack of jurisdiction, and the motion for a COA is DENIED as moot.