NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 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 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 ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2021-10-13 562-578 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ALAMITOS CA
2021-10-13 564-232 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 BREMERTON WA
2021-10-13 579-484 not yet reported which blocks → TELUS Mobility 8303 St-Hyacinthe —
2021-10-13 580-615 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OK 409F DURANT OK
2021-10-13 585-579 0XXX1XXX8XXX9XXX · 3 holders which blocks → PEERING HUB, INC. - NY 818H BERGEN NY
2021-10-13 585-592 0XXX2XXX5XXX6XXX · 3 holders which blocks → PEERING HUB, INC. - NY 818H BELMONT NY
2021-10-13 605-510 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RAPID CITY SD
2021-10-13 607-955 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H GROTON NY
2021-10-13 629-266 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F NASHVILLE TN
2021-10-13 657-531 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HUNTITNBCH CA
2021-10-13 701-410 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDFORKS ND
2021-10-13 708-901 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LA GRANGE IL
2021-10-13 708-920 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2021-10-13 719-405 0XXX which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F CRESTONE CO
2021-10-13 747-319 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BRBN SNVY CA
2021-10-13 769-266 0XXX1XXX2XXX3XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E MONTICELLO MS
2021-10-13 769-267 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - MS 992E CARTHAGE MS
2021-10-13 769-268 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA MS - LLC 458C JACKSON MS
2021-10-13 825-973 not yet reported which blocks → TELUS Mobility 8301 Grande Prairie —
2021-10-13 825-974 not yet reported which blocks → TELUS Mobility 8301 High River —
2021-10-13 864-753 0–9 XXXall 10 · 4 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 SPARTANBG SC
2021-10-12 346-514 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 STAFFORD TX
2021-10-12 579-985 not yet reported which blocks → TELUS Mobility 8303 St-Jean —
2021-10-12 629-265 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F LAVERGNE TN
2021-10-12 682-362 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 GLENDALE TX
2021-10-12 725-705 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H INDIAN SPG NV
2021-10-12 725-715 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H JEAN NV
2021-10-12 725-745 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H MTCHARLETN NV
2021-10-12 725-765 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H NELSON NV
2021-10-12 727-436 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H HUDSON FL
2021-10-12 807-842 not yet reported which blocks → TELUS Mobility 8303 Kenora —
2021-10-12 825-975 not yet reported which blocks → TELUS Mobility 8301 Edmonton —
2021-10-12 825-977 not yet reported which blocks → TELUS Mobility 8301 Edmonton —
2021-10-12 863-306 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H HAINESCITY FL
2021-10-12 863-309 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H POLK CITY FL
2021-10-12 873-695 not yet reported which blocks → 9164-3122 Quebec inc 843D Lac-Megantic —
2021-10-12 904-558 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H KINGSLEYLK FL
2021-10-12 904-756 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H LAWTEY FL
2021-10-12 915-291 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 EL PASO TX
2021-10-12 941-282 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H NORTH PORT FL
2021-10-12 941-283 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H MYAKKA FL
2021-10-12 941-287 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H SARASOTA FL
2021-10-11 202-240 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WSHNGTNZN1 DC
2021-10-11 202-571 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 WSHNGTNZN1 DC
2021-10-11 207-987 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 AUGUSTA ME
2021-10-11 213-575 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D LSAN DA 05 CA
2021-10-11 224-431 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2021-10-11 229-541 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VALDOSTA GA
2021-10-11 272-467 0–9 XXXall 10 · 7 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 MIDDLEBURG PA
2021-10-11 304-246 0–9 XXXall 10 · 4 holders which blocks → UNITED STATES CELLULAR - WV 6284 SUMMERSVL WV

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.