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
2018-05-22 610-915-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J PHPHSBZN14 PA
2018-05-21 610-592-2XXX 2000–2999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHPHSBZN30 PA
2018-05-17 610-245-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN11 PA
2018-05-17 610-415-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHOENIXVL PA
2018-05-17 610-510-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RIEGELSVL PA
2018-05-17 610-600-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 UPBLCKEDDY PA
2018-05-17 610-600-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 UPBLCKEDDY PA
2018-05-17 610-600-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 UPBLCKEDDY PA
2018-05-17 610-616-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN14 PA
2018-05-16 610-214-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COOPERSBG PA
2018-05-16 610-214-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COOPERSBG PA
2018-05-16 610-214-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COOPERSBG PA
2018-05-16 610-345-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WEST GROVE PA
2018-05-16 610-686-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CATASAUQUA PA
2018-05-16 610-723-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN22 PA
2018-05-16 610-735-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 IRONTON PA
2018-05-16 610-735-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 IRONTON PA
2018-05-16 610-735-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 IRONTON PA
2018-04-09 610-652-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 SASSAMNSVL PA
2018-03-08 610-713-1XXX 1000–1999Assigned METROPCS, INC. 5562 PHPHSBZN17 PA
2018-02-23 610-492-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J PHPHSBZN22 PA
2018-02-06 610-735-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 IRONTON PA
2018-01-25 610-379-3XXX 3000–3999Assigned ONVOY, LLC - PA 547E LEHIGHTON PA
2017-12-05 610-226-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 COLLEGEVL PA
2017-11-27 610-614-8XXX 8000–8999Assigned IP HORIZON LLC 515J NAZARETH PA
2017-11-01 610-463-0XXX 0000–0999Assigned ONVOY, LLC - PA 547E READING PA
2017-11-01 610-463-1XXX 1000–1999Assigned ONVOY, LLC - PA 547E READING PA
2017-10-19 610-379-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LEHIGHTON PA
2017-10-19 610-421-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J EMMAUS PA
2017-10-03 610-396-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J READING PA
2017-09-27 610-806-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WEST GROVE PA
2017-09-20 610-445-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BELVIDERE PA
2017-09-12 610-600-6XXX 6000–6999Assigned ONVOY, LLC - PA 547E UPBLCKEDDY PA
2017-09-01 610-214-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 COOPERSBG PA
2017-09-01 610-556-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J UHLERSTOWN PA
2017-09-01 610-979-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ATGLEN PA
2017-08-22 610-961-2XXX 2000–2999Assigned METROPCS, INC. 5562 KENNETT SQ PA
2017-08-09 610-498-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 BELVIDERE PA
2017-08-07 610-340-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 POTTSTOWN PA
2017-07-19 610-904-7XXX 7000–7999Assigned TELNYX LLC 073H EMMAUS PA
2017-06-16 610-663-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ALLENTOWN PA
2017-06-09 610-632-8XXX 8000–8999Assigned TELNYX LLC 073H PHPHSBZN23 PA
2017-06-02 610-899-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 TOPTON PA
2017-06-02 610-919-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 YELLOW HS PA
2017-05-18 610-214-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 COOPERSBG PA
2017-05-18 610-556-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 UHLERSTOWN PA
2017-04-10 610-379-1XXX 1000–1999Assigned ONVOY, LLC - PA 547E LEHIGHTON PA
2017-04-10 610-493-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 OLEY PA
2017-04-10 610-575-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 BIRDSBORO PA
2017-04-10 610-702-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 BALLY 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.