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
2014-10-23 787-994-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-10-23 787-994-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-10-23 787-994-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-10-15 787-631-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-10-15 787-994-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-10-15 787-994-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-10-15 787-994-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-10-07 787-631-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-10-07 787-631-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-10-07 787-631-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-10-07 787-631-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-10-07 787-664-3XXX 3000–3999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J PUEBLOVIEJ PR
2014-10-07 787-664-4XXX 4000–4999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J PUEBLOVIEJ PR
2014-09-23 787-545-8XXX 8000–8999Assigned LIBERTY MOBILE PUERTO RICO INC. 8305 TOA ALTA PR
2014-09-23 787-940-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-09-23 787-940-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-09-23 787-940-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-09-23 787-940-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-09-10 787-966-4XXX 4000–4999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONNOR PR
2014-09-10 787-966-5XXX 5000–5999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONNOR PR
2014-07-11 787-624-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 TRUJILLOAL PR
2014-07-11 787-624-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 TRUJILLOAL PR
2014-05-27 787-940-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2014-03-26 787-624-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 TRUJILLOAL PR
2014-03-26 787-624-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 TRUJILLOAL PR
2014-03-26 787-624-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 TRUJILLOAL PR
2014-03-25 787-966-3XXX 3000–3999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J BAYAMONNOR PR
2013-10-30 787-980-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2013-10-30 787-980-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2013-10-30 787-980-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2013-09-04 787-705-2XXX 2000–2999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 PUEBLOVIEJ PR
2013-09-04 787-705-3XXX 3000–3999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 PUEBLOVIEJ PR
2013-09-04 787-705-4XXX 4000–4999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 PUEBLOVIEJ PR
2013-09-04 787-932-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-09-04 787-932-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-09-04 787-932-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-09-04 787-932-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-09-04 787-932-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-09-04 787-945-0XXX 0000–0999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 SANTURCEES PR
2013-09-04 787-945-1XXX 1000–1999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 SANTURCEES PR
2013-09-04 787-945-2XXX 2000–2999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 SANTURCEES PR
2013-08-20 787-932-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-08-02 787-544-3XXX 3000–3999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 CAMUY PR
2013-08-02 787-665-0XXX 0000–0999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 DORADO PR
2013-08-02 787-665-2XXX 2000–2999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 DORADO PR
2013-08-02 787-680-0XXX 0000–0999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 ARECIBO PR
2013-08-02 787-687-8XXX 8000–8999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 GURABO PR
2013-08-02 787-931-0XXX 0000–0999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 AGUADILLA PR
2013-08-02 787-957-3XXX 3000–3999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 CANOVANAS PR
2013-07-31 787-953-3XXX 3000–3999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 YABUCOA 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.