NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
2005-02-03 450-989 not yet reported which blocks → Videotron Ltd. 8306 Ste-Victoire —
2005-02-03 484-615 1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN28 PA
2005-02-03 580-451 1XXX5XXX · 2 holders which blocks → UNITED STATES CELLULAR - OK 6272 DOUGHERTY OK
2005-02-03 615-697 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J WATERTOWN TN
2005-02-03 740-281 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 NEWARK OH
2005-02-03 780-633 not yet reported which blocks → Bell West Inc. 2933 Edmonton —
2005-02-03 780-647 not yet reported which blocks → TELUS 8084 Red Earth —
2005-02-03 785-534 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 BELOIT KS
2005-02-03 785-686 not yet reported which blocks → NEX-TECH, LLC - KS 4366 SMITH CTR KS
2005-02-03 785-688 not yet reported which blocks → NEX-TECH, LLC - KS 4366 PLAINVILLE KS
2005-02-03 804-239 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J RICHMOND VA
2005-02-03 819-885 not yet reported which blocks → Videotron Ltd. 8306 St-Andre-Avellin —
2005-02-03 907-768 not yet reported which blocks → MATANUSKA TEL. ASSN., INC. 3015 CANTWELL AK
2005-02-02 208-688 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TYGEE VLY ID
2005-02-02 224-610 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J WAUKEGAN IL
2005-02-02 239-232 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J EVERGLADES FL
2005-02-02 269-558 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 9 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 MARSHALL MI
2005-02-02 270-505 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J ELIZABTHTN KY
2005-02-02 317-664 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2005-02-02 408-726 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 SNJS NORTH CA
2005-02-02 502-210 0–9 XXXall 10 · 4 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C LOUISVILLE KY
2005-02-02 585-672 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 ROCHESTER NY
2005-02-02 619-632 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CHULAVISTA CA
2005-02-02 619-793 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 SNDG SNDG CA
2005-02-02 803-406 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 NO SUMTER SC
2005-02-02 845-784 0–9 XXXall 10 · 7 holders which blocks → METROPCS, INC. 5562 NEWBURGH NY
2005-02-02 954-297 0–9 XXXwhole prefix which blocks → METROPCS, INC. 5562 FTLAUDERDL FL
2005-02-02 971-285 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2005-02-01 330-407 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 NEWPHLDLPH OH
2005-02-01 575-802 3XXX5XXX7XXX · 2 holders which blocks → MESCALERO APACHE TELECOM, INC. - NM 661D RUIDOSO NM
2005-02-01 610-340 0–9 XXXall 10 · 7 holders which blocks → PAETEC ITEL, LLC 829J POTTSTOWN PA
2005-02-01 641-316 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IA 221F IOWA FALLS IA
2005-02-01 916-949 0–9 XXXall 10 · 2 holders which blocks → UTILITY TELECOM GROUP, LLC - CA 9262 SCRM MAIN CA
2005-01-31 203-307 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 FAIRFIELD CT
2005-01-31 203-540 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRIDGEPORT CT
2005-01-31 203-898 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 DARIEN CT
2005-01-31 203-990 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CT 7230 OLDGRNWICH CT
2005-01-31 239-676 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J BONITA SPG FL
2005-01-31 347-601 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN05 NY
2005-01-31 347-602 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN05 NY
2005-01-31 804-544 0–9 XXXall 10 · 5 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 MONTPELIER VA
2005-01-28 480-313 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2005-01-28 480-678 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2005-01-28 503-564 0XXX1XXX3XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 HOOD LAND OR
2005-01-27 202-470 0–9 XXXall 10 · 3 holders which blocks → VERIZON WASHINGTON DC, INC. 9211 WSHNGTNZN1 DC
2005-01-27 231-424 2XXX4XXX7XXX · 2 holders which blocks → ACD TELECOM, INC. - MI 3535 CARR MI
2005-01-27 256-693 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HAZELGREEN AL
2005-01-27 256-695 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRIDGEPORT AL
2005-01-27 574-933 0–9 XXXall 10 · 3 holders which blocks → COMMUNICATIONS VENTURE CORP DBA INDIGITAL TELECOM 4169 PLYMOUTH IN
2005-01-27 920-350 0–9 XXXall 10 · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K COLUMBUS WI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.