NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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 NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2012-02-09 226-848 not yet reported which blocks → Brooke Telecom Co-operative Ltd. 692G Watford —
2012-02-09 479-340 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROGERS AR
2012-02-09 581-444 not yet reported which blocks → Bell Mobility 6574 Fermont —
2012-02-09 604-265 not yet reported which blocks → Iristel Inc. 154E North Vancouver —
2012-02-09 604-305 not yet reported which blocks → Iristel Inc. 154E North Vancouver —
2012-02-09 613-604 not yet reported which blocks → Iristel Inc. 154E Ottawa-Hull —
2012-02-09 613-912 not yet reported which blocks → Iristel Inc. 154E Ottawa-Hull —
2012-02-09 714-461 0–9 XXXall 10 · 4 holders which blocks → METROPCS NETWORKS, LLC 899D FULLERTON CA
2012-02-09 808-445 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - HI 9414 HONOLULU HI
2012-02-09 813-922 0–9 XXXall 10 · 5 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L TAMPASTH FL
2012-02-09 904-323 0–9 XXXall 10 · 2 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 JACKSONVL FL
2012-02-09 904-337 0–9 XXXall 10 · 6 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 JACKSONVL FL
2012-02-08 206-454 0–9 XXXall 10 · 5 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SEATTLE WA
2012-02-08 206-596 0–9 XXXall 10 · 4 holders which blocks → INTRADO COMMUNICATIONS, LLC 841C SEATTLE WA
2012-02-08 269-359 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C KALAMAZOO MI
2012-02-08 313-241 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLCV - MI 543C DETROITZN4 MI
2012-02-08 502-615 0–9 XXXall 10 · 2 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C LOUISVILLE KY
2012-02-08 616-426 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRAND RPDS MI
2012-02-08 667-203 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-205 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-207 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-208 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-209 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-210 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-212 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-213 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-214 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-216 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-217 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-218 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-219 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-224 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-234 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 667-239 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 BALTIMORE MD
2012-02-08 702-815 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2012-02-08 857-208 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2012-02-07 219-212 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MEDARYVL IN
2012-02-07 219-215 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LAKE VLG IN
2012-02-07 440-401 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 TRINITY OH
2012-02-07 469-307 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCKINNEY TX
2012-02-07 512-605 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 AUSTIN TX
2012-02-07 808-494 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HILO HI
2012-02-07 865-672 0–9 XXXall 10 · 4 holders which blocks → CONCORD TEL. EXCH., INC. 0559 CONCORD TN
2012-02-06 201-354 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BAYONNE NJ
2012-02-06 226-241 not yet reported which blocks → Iristel Inc. 154E Kitchener-Waterloo —
2012-02-06 226-246 not yet reported which blocks → Videotron Ltd. 383F Windsor —
2012-02-06 276-292 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J RIDGEWAY VA
2012-02-06 276-421 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J BASSETT VA
2012-02-06 276-833 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J AXTON VA
2012-02-06 434-423 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J BACHESHALL VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.