NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2016-07-26 830-754 0XXX2XXX3XXX4XXX6XXX7XXX9XXX · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ASHERTON TX
2016-07-26 872-760 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN10 IL
2016-07-26 904-785 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → WINDSTREAM FLORIDA, INC. 0336 HASTINGS FL
2016-07-26 904-901 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E GREENCVSPG FL
2016-07-26 937-986 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEAVERCREK OH
2016-07-26 971-754 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 TELECOM OF OREGON, LLC - OR 7537 PORTLAND OR
2016-07-25 231-212 0XXX1XXX3XXX5XXX7XXX9XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J INTERLOCHN MI
2016-07-25 248-963 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E ROCHESTER MI
2016-07-25 302-608 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F DOVER DE
2016-07-25 442-291 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 VISTA CA
2016-07-25 475-232 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CT 4800 STAMFORD CT
2016-07-25 609-551 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F WILDWOOD NJ
2016-07-25 614-612 0XXX1XXX2XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F ALTON OH
2016-07-25 614-676 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F GAHANNA OH
2016-07-25 614-689 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F DUBLIN OH
2016-07-25 628-253 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SAN RAFAEL CA
2016-07-25 712-205 0XXX1XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 AUDUBON IA
2016-07-25 717-807 0XXX2XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → WINDSTREAM D&E, INC. 0165 LITITZ PA
2016-07-25 806-609 9XXX which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 MEMPHIS TX
2016-07-25 806-612 0XXX1XXX2XXX6XXX7XXX9XXX · 5 holders which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 DALHART TX
2016-07-25 806-614 0XXX1XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 BROWNFIELD TX
2016-07-25 806-617 7XXX9XXX · 2 holders which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 ANTON TX
2016-07-25 830-219 0–9 XXXall 10 · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K CARRIZOSPG TX
2016-07-25 909-506 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CLAREMONT CA
2016-07-25 940-317 0–9 XXXall 10 · 3 holders which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 SEYMOUR TX
2016-07-25 984-349 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E RALEIGH NC
2016-07-22 210-969 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F SANANTONIO TX
2016-07-22 314-354 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K ST LOUIS MO
2016-07-22 323-530 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 MONTEBELLO CA
2016-07-22 385-267 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J SALT LAKE UT
2016-07-22 385-482 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - UT 117F PROVO UT
2016-07-22 424-402 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 W ANGELES CA
2016-07-22 561-815 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2016-07-22 628-239 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNFC JUNPR CA
2016-07-22 628-246 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2016-07-22 717-906 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J CARLISLE PA
2016-07-22 727-440 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E STPETERSBG FL
2016-07-22 727-605 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E HUDSON FL
2016-07-22 747-216 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E NORTHRIDGE CA
2016-07-22 757-794 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F TOANO VA
2016-07-22 774-770 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 NEWBEDFORD MA
2016-07-22 786-823 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E NORTH DADE FL
2016-07-22 786-860 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J MIAMI FL
2016-07-22 812-928 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 7440 CRANE IN
2016-07-22 813-820 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E TAMPAEST FL
2016-07-22 828-532 0–9 XXXall 10 · 6 holders which blocks → CAROLINA WEST WIRELESS, INC. 5932 LAKE LURE NC
2016-07-22 857-763 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BOSTON MA
2016-07-22 872-763 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN06 IL
2016-07-22 901-671 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2016-07-22 909-750 0–9 XXXall 10 · 4 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ONTARIO CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.