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
2019-01-16 838-839 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J ALBANY NY
2019-01-16 850-813 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C PONCE LEON FL
2019-01-16 864-535 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 GREENVILLE SC
2019-01-16 907-308 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS 6563 ANCHORAGE AK
2019-01-16 929-504 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN04 NY
2019-01-16 929-724 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN14 NY
2019-01-16 930-888 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J CHARLESTN IN
2019-01-16 954-664 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 FTLAUDERDL FL
2019-01-15 213-451 0–9 XXXall 10 · 6 holders which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 13 CA
2019-01-15 239-286 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FORT MYERS FL
2019-01-15 470-453 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2019-01-15 514-672 not yet reported which blocks → InnSysVoice Corp 383H Montreal —
2019-01-15 551-299 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 FAIR LAWN NJ
2019-01-15 629-231 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - TN 525E OLDHICKORY TN
2019-01-15 820-300 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C GUADALUPE CA
2019-01-15 863-251 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WINTER HVN FL
2019-01-15 931-236 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - TN 525E FREDONIA TN
2019-01-15 931-382 0XXX1XXX2XXX8XXX · 3 holders which blocks → ONVOY, LLC - TN 525E HAMPSHIRE TN
2019-01-15 986-888 0–9 XXXall 10 · 6 holders which blocks → TERRA NOVA TELECOM INC. 145J BOISE ID
2019-01-14 202-914 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN1 DC
2019-01-14 470-452 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2019-01-14 480-546 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 PHOENIX AZ
2019-01-14 519-705 not yet reported which blocks → InnSysVoice Corp 383H London —
2019-01-14 519-905 not yet reported which blocks → InnSysVoice Corp 383H Guelph —
2019-01-14 534-888 0XXX1XXX2XXX7XXX8XXX9XXX · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J WAUPACA WI
2019-01-14 602-581 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 PHOENIX AZ
2019-01-14 612-428 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E TWINCITIES MN
2019-01-14 623-246 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 PHOENIX AZ
2019-01-14 682-282 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F ARLINGTON TX
2019-01-14 781-798 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 KINGSTON MA
2019-01-14 909-710 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ETIWANDA CA
2019-01-14 984-295 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 LOUISBURG NC
2019-01-11 360-506 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WA 483E CENTRALIA WA
2019-01-11 360-641 0XXX1XXX2XXX4XXX5XXX7XXX · 3 holders which blocks → ONVOY, LLC - WA 483E ASHFORD WA
2019-01-11 360-997 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WA 483E BLACKDIMND WA
2019-01-11 385-320 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 KAYSVILLE UT
2019-01-11 531-999 0–9 XXXall 10 · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J OMAHA NE
2019-01-11 813-524 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C TAMPACEN FL
2019-01-11 856-395 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F CEDARVILLE NJ
2019-01-11 917-970 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C NWYRCYZN01 NY
2019-01-11 956-468 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 MCALLEN TX
2019-01-11 984-288 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NC 638E OXFORD NC
2019-01-10 239-276 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 NAPLES FL
2019-01-10 281-562 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 BAMMEL TX
2019-01-10 334-643 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LINDEN AL
2019-01-10 470-472 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - GA 067D LULA GA
2019-01-10 470-500 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D VILLA RICA GA
2019-01-10 470-900 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D WINDER GA
2019-01-10 479-469 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AR 348F MENA AR
2019-01-10 504-380 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 NEWORLEANS LA

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.