NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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, last 30 days — NPA 939
METROPCS, INC. 3
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
2013-12-18 939-366-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-12-18 939-366-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-12-18 939-366-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-12-18 939-366-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-12-18 939-366-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-12-18 939-366-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-12-18 939-366-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-12-18 939-366-7XXX 7000–7999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-12-18 939-366-8XXX 8000–8999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-12-18 939-366-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2013-12-03 939-208-4XXX 4000–4999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2013-12-03 939-208-5XXX 5000–5999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2013-12-03 939-208-6XXX 6000–6999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2013-11-19 939-204-0XXX 0000–0999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-19 939-204-1XXX 1000–1999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-19 939-204-2XXX 2000–2999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-19 939-204-3XXX 3000–3999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-19 939-204-4XXX 4000–4999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-19 939-204-5XXX 5000–5999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-19 939-204-6XXX 6000–6999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-19 939-204-7XXX 7000–7999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-19 939-204-8XXX 8000–8999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-19 939-204-9XXX 9000–9999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-13 939-338-4XXX 4000–4999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-13 939-338-5XXX 5000–5999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-13 939-338-6XXX 6000–6999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-13 939-338-7XXX 7000–7999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-13 939-338-8XXX 8000–8999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-13 939-338-9XXX 9000–9999Assigned LIBERTY COMMUNICATIONS OF PUERTO RICO LLC 955G RIOPIEDRAS PR
2013-11-07 939-223-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2013-11-07 939-223-1XXX 1000–1999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2013-11-07 939-223-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2013-11-07 939-223-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2013-10-30 939-489-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2013-10-30 939-489-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2013-10-30 939-489-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 CAROLINA PR
2013-10-16 939-217-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2013-10-16 939-217-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2013-10-16 939-217-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 PONCE PR
2013-10-16 939-865-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 MAYAGUEZ PR
2013-10-10 939-208-7XXX 7000–7999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2013-10-10 939-208-8XXX 8000–8999Assigned LIBERTY MOBILE PUERTO RICO INC. 639J CAGUAS PR
2013-10-08 939-325-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 CAYEY PR
2013-09-18 939-308-3XXX 3000–3999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2013-09-18 939-308-4XXX 4000–4999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2013-09-18 939-308-5XXX 5000–5999Assigned SUNCOM DBA T-MOBILE USA 8645 ARECIBO PR
2013-09-10 939-221-1XXX 1000–1999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 LUQUILLO PR
2013-09-04 939-332-7XXX 7000–7999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 CAGUAS PR
2013-09-04 939-475-1XXX 1000–1999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 SANTURCE PR
2013-09-04 939-645-9XXX 9000–9999Assigned WORLDNET TELECOMMUNICATIONS, INC. - PR 9726 SANTURCE PR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.