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
Download CSV ↓
Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2018-10-25 863-600 0–9 XXXall 10 · 7 holders which blocks → INVOXIO INCORPORATED 158H LAKELAND FL
2018-10-25 870-521 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWARK AR
2018-10-25 929-502 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN03 NY
2018-10-25 929-536 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN05 NY
2018-10-25 941-499 0–9 XXXall 10 · 6 holders which blocks → INVOXIO INCORPORATED 158H VENICE FL
2018-10-25 941-933 0–9 XXXall 10 · 5 holders which blocks → INVOXIO INCORPORATED 158H PALMETTO FL
2018-10-25 971-899 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → INVOXIO INCORPORATED 158H RAINIER OR
2018-10-25 971-988 0–9 XXXall 10 · 7 holders which blocks → INVOXIO INCORPORATED 158H ASTORIA OR
2018-10-24 475-253 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF CONNECTICUT, LLC - CT 539F WALLINGFD CT
2018-10-24 475-254 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NEW HAVEN CT
2018-10-24 531-234 0XXX2XXX3XXX4XXX5XXX · 2 holders which blocks → ONVOY, LLC - NE 549E NEWMAN GRV NE
2018-10-24 712-345 0XXX1XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - IA 221F NEMAHA IA
2018-10-24 712-354 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - IA 221F CHARTEROAK IA
2018-10-24 712-412 1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → ONVOY, LLC - IA 221F DOW CITY IA
2018-10-23 216-345 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 TERRACE OH
2018-10-23 224-297 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 DESPLAINES IL
2018-10-23 234-257 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 MONTROSE OH
2018-10-23 253-527 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 TACOMA WA
2018-10-23 405-827 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SHAWNEE OK
2018-10-23 417-390 0–9 XXXall 10 · 7 holders which blocks → SOUTHWESTERN BELL 9533 MONETT MO
2018-10-23 513-613 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C MORROW OH
2018-10-23 618-492 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC 224C EDGEWOOD IL
2018-10-23 814-983 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F ERIE PA
2018-10-23 984-246 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F APEX NC
2018-10-22 209-310 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LODI CA
2018-10-22 210-936 0–9 XXXwhole prefix which blocks → SOUTHWESTERN BELL 9533 SANANTONIO TX
2018-10-22 224-295 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 PALATINE IL
2018-10-22 385-284 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 MORGAN UT
2018-10-22 440-643 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F COLUMBISTA OH
2018-10-22 442-304 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - CA 649C EAGLE MT CA
2018-10-22 463-215 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 FISHERS IN
2018-10-22 470-408 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D ATLANTA GA
2018-10-22 513-654 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → PEERLESS NETWORK OF OHIO, LLC - OH 284F SO LEBANON OH
2018-10-22 646-980 0–9 XXXall 10 · 3 holders which blocks → AIRUS, INC. - NY 363H NWYRCYZN01 NY
2018-10-22 646-991 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN01 NY
2018-10-22 667-267 0–9 XXXwhole prefix which blocks → CORE COMMUNICATIONS, INC.- MD 2593 ANNAPOLIS MD
2018-10-22 716-477 0–9 XXXall 10 · 4 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E CATTARAGUS NY
2018-10-22 720-682 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2018-10-22 727-291 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF FLORIDA, LLC - FL 902E STPETERSBG FL
2018-10-22 845-539 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E LIBERTY NY
2018-10-22 864-537 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC 8534 GREENVILLE SC
2018-10-22 873-539 not yet reported which blocks → Videotron Ltd. 8306 La Minerve —
2018-10-22 929-497 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN03 NY
2018-10-22 929-519 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN10 NY
2018-10-20 610-477 9XXX which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F ALLENTOWN PA
2018-10-19 210-761 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C SANANTONIO TX
2018-10-19 218-580 0XXX1XXX4XXX8XXX9XXX · 4 holders which blocks → TEKSTAR COMMUNICATIONS, INC. 4156 DULUTH MN
2018-10-19 224-294 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LIBERTYVL IL
2018-10-19 323-970 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 09 CA
2018-10-19 331-242 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LOMBARD IL

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.