NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
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
2017-12-28 717-908 0–9 XXXall 10 · 6 holders which blocks → AIRUS, INC. - PA 438H HARISBGZN1 PA
2017-12-28 856-301 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 VINELAND NJ
2017-12-27 205-723 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TUSCALOOSA AL
2017-12-27 475-237 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 DANBURY CT
2017-12-27 551-283 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HACKENSACK NJ
2017-12-27 603-368 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 PORTSMOUTH NH
2017-12-27 781-490 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NORWELL MA
2017-12-27 848-262 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DUNELLEN NJ
2017-12-26 346-291 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HSTNSUBURB TX
2017-12-26 346-292 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 BAYTOWN TX
2017-12-26 360-706 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J OLYMPIA WA
2017-12-26 469-382 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C CEDAR HILL TX
2017-12-26 605-846 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 ABERDEEN SD
2017-12-26 682-266 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARLINGTON TX
2017-12-26 754-232 0–9 XXXall 10 · 2 holders which blocks → COMCAST IP PHONE, LLC 318J HOLLYWOOD FL
2017-12-26 786-593 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2017-12-26 904-454 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 STARKE FL
2017-12-26 925-499 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 CONCORD CA
2017-12-26 925-542 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WALNUT CRK CA
2017-12-26 929-464 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN14 NY
2017-12-26 954-743 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HOLLYWOOD FL
2017-12-22 442-277 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - CA 649C ESCONDIDO CA
2017-12-22 470-380 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D CUMMING GA
2017-12-22 470-396 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2017-12-22 646-984 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2017-12-22 734-346 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TRENTON MI
2017-12-22 737-232 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 ELGIN TX
2017-12-22 803-784 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 CAMDEN SC
2017-12-22 865-343 0–9 XXXall 10 · 6 holders which blocks → VONAGE AMERICA LLC 197D KNOXVILLE TN
2017-12-22 914-650 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C MT VERNON NY
2017-12-22 929-463 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN08 NY
2017-12-22 941-300 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C NORTH PORT FL
2017-12-22 980-274 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 PINEVILLE NC
2017-12-22 989-270 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C SAGINAW MI
2017-12-21 219-533 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D HIGHLAND IN
2017-12-21 236-757 not yet reported which blocks → TELUS 8086 Vancouver —
2017-12-21 343-622 not yet reported which blocks → ExaTEL Inc. 3147 Deep River —
2017-12-21 343-623 not yet reported which blocks → ExaTEL Inc. 3147 Chalk River —
2017-12-21 365-242 not yet reported which blocks → TELUS Integrated Communications 2782 Port Credit —
2017-12-21 385-300 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - UT 871E BOUNTIFUL UT
2017-12-21 431-489 not yet reported which blocks → TELUS Integrated Communications 2782 Winnipeg —
2017-12-21 442-363 0–9 XXXall 10 · 5 holders which blocks → FRONTIER CALIFORNIA INC. 4420 VTVL ADLN CA
2017-12-21 510-650 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C ELSBR-PINL CA
2017-12-21 531-216 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCHUYLER NE
2017-12-21 548-227 not yet reported which blocks → TELUS Integrated Communications 2782 Elmira —
2017-12-21 548-228 not yet reported which blocks → TELUS Integrated Communications 2782 New Hamburg —
2017-12-21 647-561 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2017-12-21 647-562 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2017-12-21 647-563 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2017-12-21 669-293 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 SNJS NORTH CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.