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
2012-06-07 540-509 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F PULASKI VA
2012-06-07 702-842 0XXX1XXX2XXX4XXX9XXX which blocks → PEERLESS NETWORK OF NEVADA, LLC - NV 408F LAKE MEAD NV
2012-06-07 856-888 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F HADDONFLD NJ
2012-06-07 862-333 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F BLOOMFIELD NJ
2012-06-07 862-444 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F ORANGE NJ
2012-06-07 862-666 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F POMPTONLKS NJ
2012-06-07 908-888 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F CHESTER NJ
2012-06-07 916-462 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J RSVL MAIN CA
2012-06-06 267-245 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 DOYLESTOWN PA
2012-06-06 336-864 0–9 XXXall 10 · 6 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 EDEN NC
2012-06-06 561-320 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E JUPITER FL
2012-06-06 785-315 7XXX which blocks → NEX-TECH WIRELESS, LLC 122D ASSARIA KS
2012-06-06 786-505 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E MIAMI FL
2012-06-06 813-330 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E TAMPAEST FL
2012-06-06 828-569 0–9 XXXall 10 · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K HICKORY NC
2012-06-05 208-742 0–9 XXXall 10 · 6 holders which blocks → CUSTER TELEPHONE BROADBAND SERVICES LLC - ID 646G SALMON ID
2012-06-05 234-212 0–9 XXXall 10 · 8 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 TWINSBURG OH
2012-06-05 234-213 0XXX1XXX3XXX · 3 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 AURORA OH
2012-06-05 405-896 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F OKLA CITY OK
2012-06-05 502-440 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J LA GRANGE KY
2012-06-05 505-639 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J ALBUQURQUE NM
2012-06-05 717-547 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 HARISBGZN1 PA
2012-06-05 772-999 0–9 XXXall 10 · 6 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G VERO BEACH FL
2012-06-04 239-215 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J FORT MYERS FL
2012-06-01 201-380 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F KEARNY NJ
2012-06-01 321-209 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E ORLANDO FL
2012-06-01 450-485 not yet reported which blocks → Iristel Inc. 154E St-Eustache —
2012-06-01 581-200 not yet reported which blocks → Iristel Inc. 154E Alma —
2012-06-01 581-500 not yet reported which blocks → Iristel Inc. 154E Levis —
2012-06-01 819-201 not yet reported which blocks → Iristel Inc. 154E Magog —
2012-05-31 267-225 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E PHLDLPHZN1 PA
2012-05-31 289-864 not yet reported which blocks → Primus Telecommunications Canada Inc. 201A Brampton —
2012-05-31 305-209 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E KEYS FL
2012-05-31 581-377 not yet reported which blocks → TELUS Quebec 2243 Leeds —
2012-05-31 581-378 not yet reported which blocks → TELUS Quebec 2243 Saint-Odilon —
2012-05-31 581-379 not yet reported which blocks → TELUS Quebec 2243 Sainte-Rose —
2012-05-31 581-380 not yet reported which blocks → TELUS Quebec 2243 Sainte-Justine —
2012-05-31 602-715 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2012-05-31 647-848 not yet reported which blocks → Fibernetics Corporation 464D Toronto —
2012-05-31 705-501 not yet reported which blocks → Fibernetics Corporation 464D Espanola —
2012-05-31 724-617 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 CLYMER PA
2012-05-31 769-206 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E UTICA MS
2012-05-31 814-812 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ERIE PA
2012-05-30 323-452 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K LSAN DA 13 CA
2012-05-30 469-319 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEAGOVILLE TX
2012-05-30 631-257 0–9 XXXall 10 · 7 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 SMITHTOWN NY
2012-05-30 763-240 0XXX1XXX2XXX · 3 holders which blocks → WIRELESS COMMUNICATIONS VENTURE 4609 BIG LAKE MN
2012-05-30 779-205 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JOLIET IL
2012-05-30 786-608 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2012-05-30 907-292 0XXX1XXX which blocks → CORDOVA WIRELESS COMMUNICATIONS, INC. 6882 YAKUTAT AK

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.