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 610
ONVOY, LLC - PA 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 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
2004-01-27 610-441-1XXX 1000–1999Assigned METROPCS, INC. 5562 W CHESTER PA
2004-01-27 610-441-2XXX 2000–2999Assigned METROPCS, INC. 5562 W CHESTER PA
2004-01-15 610-772-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHPHSBZN31 PA
2004-01-15 610-772-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHPHSBZN31 PA
2003-10-31 610-577-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEHIGHTON PA
2003-10-31 610-577-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEHIGHTON PA
2003-10-29 610-350-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 W CHESTER PA
2003-10-29 610-350-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 W CHESTER PA
2003-10-29 610-350-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 W CHESTER PA
2003-10-06 610-406-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 READING PA
2003-10-06 610-406-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 READING PA
2003-09-23 610-406-6XXX 6000–6999Assigned NETCARRIER TELECOM, INC. - PA 5494 READING PA
2003-08-22 610-739-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN PA
2003-08-22 610-739-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN PA
2003-08-22 610-739-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN PA
2003-07-29 610-228-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN24 PA
2003-07-29 610-482-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHOENIXVL PA
2003-07-29 610-925-6XXX 6000–6999Assigned VERIZON PENNSYLVANIA, INC. 9208 KENNETT SQ PA
2003-07-14 610-295-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J ALLENTOWN PA
2003-07-14 610-577-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LEHIGHTON PA
2003-04-22 610-943-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN31 PA
2003-04-22 610-943-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN31 PA
2003-04-17 610-455-6XXX 6000–6999Assigned NETCARRIER TELECOM, INC. - PA 5494 WESTTOWN PA
2003-04-16 610-603-2XXX 2000–2999Assigned CTSI, INC. - PA 7513 READING PA
2003-04-07 610-552-6XXX 6000–6999Assigned NETCARRIER TELECOM, INC. - PA 5494 PHPHSBZN24 PA
2003-02-28 610-836-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 W CHESTER PA
2003-02-28 610-836-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 W CHESTER PA
2003-02-03 610-739-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN PA
2003-02-03 610-739-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN PA
2003-01-29 610-665-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN29 PA
2003-01-15 610-235-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 W CHESTER PA
2003-01-15 610-850-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 POTTSTOWN PA
2003-01-14 610-227-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN23 PA
2003-01-14 610-229-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN25 PA
2003-01-14 610-234-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN31 PA
2003-01-14 610-243-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 LENAPE PA
2003-01-14 610-362-9XXX 9000–9999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN14 PA
2003-01-14 610-423-9XXX 9000–9999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 EXTON PA
2003-01-14 610-471-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN11 PA
2003-01-14 610-480-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN12 PA
2003-01-14 610-535-1XXX 1000–1999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN26 PA
2003-01-14 610-545-8XXX 8000–8999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN10 PA
2003-01-14 610-553-1XXX 1000–1999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN17 PA
2003-01-14 610-707-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN22 PA
2003-01-14 610-860-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN21 PA
2003-01-14 610-938-0XXX 0000–0999Assigned SERVICE ELECTRIC TELEPHONE COMPANY, LLC 8320 PHPHSBZN13 PA
2002-11-13 610-833-6XXX 6000–6999Assigned NETCARRIER TELECOM, INC. - PA 5494 PHPHSBZN11 PA
2002-11-13 610-915-6XXX 6000–6999Assigned NETCARRIER TELECOM, INC. - PA 5494 PHPHSBZN14 PA
2002-08-22 610-427-6XXX 6000–6999Assigned AT&T - LOCAL 7421 POTTSTOWN PA
2002-08-07 610-545-6XXX 6000–6999Assigned NETCARRIER TELECOM, INC. - PA 5494 PHPHSBZN10 PA

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.