StacksVerified U.S. regulatory reference

47 CFR §64.1506

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Any interstate service described in § 64.1501(a)(1)-(2), and not subject to the exclusions contained in § 64.1501(a)(4), shall be offered only through telephone numbers beginning with a 900 service access code.