NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, all time — NPA 787
SUNCOM DBA T-MOBILE USA 655
LIBERTY MOBILE PUERTO RICO INC. 329
LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 165
WORLDNET TELECOMMUNICATIONS, INC. - PR 106
NEUTRAL TANDEM - PR 63
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2005-09-27 787-908-1XXX 1000–1999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONSUR PR
2005-09-27 787-975-0XXX 0000–0999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2005-09-27 787-975-1XXX 1000–1999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J LEVITTOWN PR
2005-09-21 787-929-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 ARROYO PR
2005-09-14 787-560-2XXX 2000–2999Assigned METROPCS, INC. 5562 AGUADILLA PR
2005-09-14 787-690-4XXX 4000–4999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAROLINA PR
2005-09-14 787-690-5XXX 5000–5999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAROLINA PR
2005-09-14 787-690-6XXX 6000–6999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAROLINA PR
2005-09-14 787-690-7XXX 7000–7999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAROLINA PR
2005-09-14 787-690-8XXX 8000–8999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAROLINA PR
2005-09-14 787-690-9XXX 9000–9999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAROLINA PR
2005-08-31 787-927-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 GUAYANILLA PR
2005-08-18 787-560-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2005-08-18 787-560-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2005-08-16 787-300-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-08-16 787-619-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2005-08-16 787-619-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2005-08-16 787-619-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2005-08-16 787-619-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2005-08-16 787-619-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2005-08-16 787-619-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2005-08-16 787-619-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2005-08-16 787-619-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2005-08-16 787-619-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 BAYAMONNOR PR
2005-06-28 787-373-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-06-28 787-387-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-06-28 787-388-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-06-28 787-688-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-06-28 787-688-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-06-23 787-478-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-06-23 787-674-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-06-23 787-674-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-05-23 787-692-0XXX 0000–0999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J PUEBLOVIEJ PR
2005-05-23 787-692-1XXX 1000–1999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J PUEBLOVIEJ PR
2005-05-23 787-692-2XXX 2000–2999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J PUEBLOVIEJ PR
2005-05-23 787-692-3XXX 3000–3999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J PUEBLOVIEJ PR
2005-05-23 787-903-0XXX 0000–0999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J TRUJILLOAL PR
2005-05-23 787-903-1XXX 1000–1999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J TRUJILLOAL PR
2005-05-23 787-903-2XXX 2000–2999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J TRUJILLOAL PR
2005-05-12 787-478-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-05-12 787-478-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-05-12 787-478-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-05-12 787-478-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-05-12 787-478-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-05-12 787-478-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-05-12 787-478-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-05-12 787-478-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2005-05-09 787-300-3XXX 3000–3999Assigned LIBERTY MOBILE PUERTO RICO INC. 8305 SANTURCE PR
2005-05-09 787-300-4XXX 4000–4999Assigned LIBERTY MOBILE PUERTO RICO INC. 8305 SANTURCE PR
2005-05-09 787-300-5XXX 5000–5999Assigned LIBERTY MOBILE PUERTO RICO INC. 8305 SANTURCE PR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.