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
2016-08-22 769-213 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MS 719E WESSON MS
2016-08-22 774-615 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 FRAMINGHAM MA
2016-08-22 803-848 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F SUMTER SC
2016-08-22 816-514 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - MO 993E KANSASCITY MO
2016-08-22 816-603 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - MO 993E KANSASCITY MO
2016-08-22 816-712 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - MO 993E KANSASCITY MO
2016-08-22 848-256 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 METUCHEN NJ
2016-08-22 909-505 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E BIGBEAR CY CA
2016-08-22 951-439 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E HEMT SAGE CA
2016-08-22 980-293 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 CHARLOTTE NC
2016-08-19 601-821 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → ONVOY, LLC - MS 719E NVALAIRSTA MS
2016-08-19 601-895 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MS 719E OBADIAH MS
2016-08-19 808-379 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K HONOLULU HI
2016-08-18 206-573 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SEATTLE WA
2016-08-18 206-646 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2016-08-18 206-773 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SEATTLE WA
2016-08-18 248-861 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 CLARKSTON MI
2016-08-18 313-913 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN1 MI
2016-08-18 385-440 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - UT 117F PLEASATGRV UT
2016-08-18 501-435 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LITTLEROCK AR
2016-08-18 501-443 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 BENTON AR
2016-08-18 516-591 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NASSAUZN05 NY
2016-08-18 571-799 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF VIRGINIA, LLC - VA 275G LEESBURG VA
2016-08-18 747-268 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E PSDN LACN CA
2016-08-18 786-872 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 KEYS FL
2016-08-18 805-572 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OXNARD CA
2016-08-18 865-505 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F SEVIERVL TN
2016-08-18 873-473 not yet reported which blocks → ISP Telecom Inc. 4727 Amos —
2016-08-18 873-474 not yet reported which blocks → ISP Telecom Inc. 4727 La Sarre —
2016-08-17 248-993 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 NORTHVILLE MI
2016-08-17 336-502 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 HAYS NC
2016-08-17 515-601 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 DES MOINES IA
2016-08-17 587-816 not yet reported which blocks → Iristel Inc. 154E Brooks —
2016-08-17 587-817 not yet reported which blocks → Iristel Inc. 154E Edson —
2016-08-17 612-258 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2016-08-17 681-247 0–9 XXXall 10 · 8 holders which blocks → SHENTEL COMMUNICATIONS, LLC. - WV 489F MARTINSBG WV
2016-08-17 873-479 not yet reported which blocks → ISP Telecom Inc. 4727 St-Jovite —
2016-08-17 941-242 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BRADENTON FL
2016-08-16 236-700 not yet reported which blocks → Iristel Inc. 154E Penticton —
2016-08-16 236-836 not yet reported which blocks → Iristel Inc. 154E Salmon Arm —
2016-08-16 272-770 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E SCRANTON PA
2016-08-16 438-344 not yet reported which blocks → Bell Mobility 6574 Montreal —
2016-08-16 479-402 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2016-08-16 479-407 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALMA AR
2016-08-16 505-595 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NM 123F ALBUQURQUE NM
2016-08-16 614-977 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F CANALWHSTR OH
2016-08-16 667-800 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MD 876D SALISBURY MD
2016-08-16 702-886 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2016-08-16 720-531 0–9 XXXall 10 · 2 holders which blocks → COMCAST IP PHONE, LLC 318J DENVER CO
2016-08-16 814-800 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E ALTOONA PA

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.