NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

21 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 272
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 13
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 3
AHOI LLC 2
PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 1
NEW CINGULAR WIRELESS PCS, LLC - DC 1
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
2018-05-21 272-225-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WEATHERLY PA
2018-05-21 272-335-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHAMOKIN PA
2018-05-21 272-335-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHAMOKIN PA
2018-05-21 272-335-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHAMOKIN PA
2018-05-21 272-381-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SCHUYLKHVN PA
2018-05-21 272-466-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WOOLRICH PA
2018-05-21 272-466-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WOOLRICH PA
2018-05-21 272-466-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WOOLRICH PA
2018-05-21 272-666-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TAMAQUA PA
2018-05-21 272-666-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TAMAQUA PA
2018-05-21 272-666-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TAMAQUA PA
2018-05-18 272-204-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FRIEDENSBG PA
2018-05-18 272-204-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FRIEDENSBG PA
2018-05-18 272-204-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FRIEDENSBG PA
2018-05-18 272-205-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MANTZVILLE PA
2018-05-18 272-205-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MANTZVILLE PA
2018-05-18 272-205-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MANTZVILLE PA
2018-05-18 272-216-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HONESDALE PA
2018-05-18 272-216-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HONESDALE PA
2018-05-18 272-216-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HONESDALE PA
2018-05-18 272-219-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MT POCONO PA
2018-05-18 272-219-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MT POCONO PA
2018-05-18 272-219-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MT POCONO PA
2018-05-18 272-222-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEAVER SPG PA
2018-05-18 272-222-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEAVER SPG PA
2018-05-18 272-222-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEAVER SPG PA
2018-05-18 272-282-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCKEANSBG PA
2018-05-18 272-282-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCKEANSBG PA
2018-05-18 272-336-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAWLEY PA
2018-05-18 272-336-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAWLEY PA
2018-05-18 272-336-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAWLEY PA
2018-05-18 272-359-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GIRARDVL PA
2018-05-18 272-359-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GIRARDVL PA
2018-05-18 272-359-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GIRARDVL PA
2018-05-18 272-433-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MILLVILLE PA
2018-05-18 272-433-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MILLVILLE PA
2018-05-18 272-483-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MILTON PA
2018-05-18 272-483-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MILTON PA
2018-05-18 272-483-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MILTON PA
2018-05-18 272-777-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GALILEE PA
2018-05-18 272-777-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GALILEE PA
2018-05-18 272-777-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GALILEE PA
2018-05-18 272-786-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 KULPMONT PA
2018-05-18 272-786-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 KULPMONT PA
2018-05-18 272-786-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 KULPMONT PA
2018-05-18 272-888-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAMLIN PA
2018-05-18 272-888-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAMLIN PA
2018-05-18 272-999-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEACH LAKE PA
2018-05-18 272-999-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEACH LAKE PA
2018-05-18 272-999-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEACH LAKE PA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.