§52.15. Central office code administration. — Inbound Citations

(l) A reporting carrier subject to § 52.15(f) of this title shall:

(1) Maintain records of the most recent date each North American Numbering Plan (NANP) telephone number allocated or ported to the reporting carrier was permanently disconnected.

(2) Beginning on the 15th day of the month after the Consumer and Governmental Affairs Bureau announces that the Administrator is ready to begin accepting these reports and on the 15th day of each month thereafter, report to the Administrator the most recent date each NANP telephone number allocated to or ported to it was permanently disconnected.

(3) For purposes of this paragraph (l), a NANP telephone number has been permanently disconnected when a subscriber permanently has relinquished the number, or the provider permanently has reversed its assignment of the number to the subscriber such that the number has been disassociated with the subscriber. A NANP telephone number that is ported to another provider is not permanently disconnected.

(4) Reporting carriers serving 100,000 or fewer domestic retail subscriber lines as reported on their most recent Forms 477, aggregated over all the providers' affiliates, must begin keeping the records required by paragraph (l)(1) of this section six months after the effective date for large providers and must begin filing the reports required by paragraph (l)(2) of this section no later than the 15th day of the month that is six months after the date announced by the Consumer and Governmental Affairs Bureau pursuant to paragraph (l)(2).

(h) Contamination occurs when at least one telephone number within a block of telephone numbers is not available for assignment to end users or customers. For purposes of this provision, a telephone number is “not available for assignment” if it is classified as administrative, aging, assigned, intermediate, or reserved as defined in § 52.15(f)(1).

(E) File updated certifications and ownership and control disclosures under paragraphs (g)(3)(ii)(B) through (F), (I), (K), (L), and (N) of this section if the authorization obtained under this section was granted before August 8, 2024.

(E) File updated certifications and ownership and control disclosures under paragraphs (g)(3)(ii)(B) through (F), (I), (K), (L), and (N) of this section if the authorization obtained under this section was granted before August 8, 2024.

(E) File updated certifications and ownership and control disclosures under paragraphs (g)(3)(ii)(B) through (F), (I), (K), (L), and (N) of this section if the authorization obtained under this section was granted before August 8, 2024.

(E) File updated certifications and ownership and control disclosures under paragraphs (g)(3)(ii)(B) through (F), (I), (K), (L), and (N) of this section if the authorization obtained under this section was granted before August 8, 2024.

(E) File updated certifications and ownership and control disclosures under paragraphs (g)(3)(ii)(B) through (F), (I), (K), (L), and (N) of this section if the authorization obtained under this section was granted before August 8, 2024.