NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2014-02-25 470-330 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2014-02-25 581-579 not yet reported which blocks → TELUS Mobility 8303 Chibougamau —
2014-02-25 585-483 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E BATAVIA NY
2014-02-25 587-501 not yet reported which blocks → Videotron Ltd. 787G Edmonton —
2014-02-25 808-468 0–9 XXXwhole prefix which blocks → ONVOY, LLC - HI 210H HONOLULU HI
2014-02-25 873-890 not yet reported which blocks → Fibernetics Corporation 464D St-Felix-de-Kingsey —
2014-02-24 505-289 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2014-02-24 601-589 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E EDWARDS MS
2014-02-21 205-632 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 TUSCALOOSA AL
2014-02-21 321-428 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C EAU GALLIE FL
2014-02-21 540-485 3XXX4XXX5XXX7XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J CULPEPER VA
2014-02-21 575-220 none assigned yet which blocks → CEBRIDGE TELECOM NM, LLC DBA SUDDENLINK COMM NM 243H TEXICO NM
2014-02-21 619-882 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 CHULAVISTA CA
2014-02-21 762-272 7XXX which blocks → ETC COMMUNICATIONS, L.L.C. - GA 205D DIAL GA
2014-02-21 803-638 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J COLUMBIA SC
2014-02-21 816-541 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 KANSASCITY MO
2014-02-21 864-729 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J GREENVILLE SC
2014-02-20 504-702 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 NEWORLEANS LA
2014-02-20 581-437 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Riviere-du-Loup —
2014-02-20 581-438 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G St-Felicien —
2014-02-20 581-440 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Thetford Mines —
2014-02-20 719-722 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 COLORDOSPG CO
2014-02-20 803-306 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 AIKEN SC
2014-02-20 873-430 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Victoriaville —
2014-02-20 956-442 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 BROWNSVL TX
2014-02-20 971-337 0–9 XXXall 10 · 4 holders which blocks → HUNTER CONSTRUCTION, INC. DBA HUNTER COMMS - OR 660C PORTLAND OR
2014-02-19 312-973 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CHICGOZN01 IL
2014-02-19 361-360 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 8434 C CHRISTI TX
2014-02-19 480-826 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2014-02-19 581-431 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Alma —
2014-02-19 581-433 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Chicoutimi —
2014-02-19 581-434 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G Jonquiere —
2014-02-19 581-435 not yet reported which blocks → Bell Aliant, a division of Bell Canada 709G La Baie (Chicoutimi Co.) —
2014-02-19 709-985 not yet reported which blocks → TELUS Integrated Communications 2782 Glovertown —
2014-02-19 863-866 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G HAINESCITY FL
2014-02-19 863-888 0–9 XXXall 10 · 7 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G POLK CITY FL
2014-02-19 941-800 0–9 XXXall 10 · 6 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G VENICE FL
2014-02-18 216-804 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2014-02-18 216-860 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CLEVELAND OH
2014-02-18 302-512 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 WILMINGTON DE
2014-02-18 317-737 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 INDIANAPLS IN
2014-02-18 480-848 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2014-02-18 520-279 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 TUCSON AZ
2014-02-18 778-841 not yet reported which blocks → Distributel 081E Nanaimo —
2014-02-18 778-842 not yet reported which blocks → Distributel 081E Parksville —
2014-02-18 778-843 not yet reported which blocks → Distributel 081E Dawson Creek —
2014-02-18 778-844 not yet reported which blocks → Distributel 081E Fort St. John —
2014-02-18 832-968 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F HOUSTON TX
2014-02-18 920-717 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J MANITOWOC WI
2014-02-18 929-271 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN06 NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.