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
2017-11-01 479-257 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 ROGERS AR
2017-11-01 504-766 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E NEWORLEANS LA
2017-11-01 567-800 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C OTTAWA OH
2017-11-01 605-980 0XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARTIN SD
2017-11-01 647-807 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2017-11-01 647-809 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2017-11-01 647-819 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2017-11-01 808-666 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - HI 210H WAILUKU HI
2017-11-01 859-800 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - KY 896E LEXINGTON KY
2017-11-01 872-838 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC 224C CHICGOZN05 IL
2017-11-01 873-739 not yet reported which blocks → Iristel Inc. 154E Buckingham —
2017-11-01 937-900 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C BEAVERCREK OH
2017-11-01 947-465 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COMMERCE MI
2017-10-31 239-241 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J NAPLES FL
2017-10-31 380-888 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OH 464C ALTON OH
2017-10-31 431-388 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2017-10-31 431-588 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2017-10-31 431-688 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2017-10-31 612-364 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2017-10-31 757-524 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - VA 138E NRFOLKZON2 VA
2017-10-31 862-707 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SUCCASUNNA NJ
2017-10-31 908-952 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SOMERVILLE NJ
2017-10-31 929-466 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C NWYRCYZN06 NY
2017-10-31 937-600 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C XENIA OH
2017-10-31 980-280 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NC 638E CHARLOTTE NC
2017-10-30 205-653 0–9 XXXwhole prefix which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BIRMINGHAM AL
2017-10-30 249-201 not yet reported which blocks → Iristel Inc. 154E Espanola —
2017-10-30 639-996 not yet reported which blocks → TELUS Mobility 8303 Weyburn —
2017-10-30 785-390 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J JUNCTIONCY KS
2017-10-30 873-288 not yet reported which blocks → Fido Solutions Inc. 5643 Ottawa-Hull —
2017-10-30 873-688 not yet reported which blocks → Fido Solutions Inc. 5643 Ottawa-Hull —
2017-10-27 226-501 not yet reported which blocks → Videotron Ltd. 383F Guelph —
2017-10-27 531-214 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - NE 549E PILGER NE
2017-10-27 574-338 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J ELKHART IN
2017-10-27 720-527 0–9 XXXall 10 · 2 holders which blocks → TELIAX, INC. - CO 567G DENVER CO
2017-10-27 737-224 0–9 XXXall 10 · 4 holders which blocks → AUSTIN BESTLINE COMPANY 7551 AUSTIN TX
2017-10-27 857-322 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J EASTBOSTON MA
2017-10-26 249-216 not yet reported which blocks → TELUS Integrated Communications 2782 Huntsville —
2017-10-26 260-253 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D MARKLE IN
2017-10-26 260-254 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D POKAGON IN
2017-10-26 458-233 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 TELECOM OF OREGON, LLC - OR 7537 ALBANY OR
2017-10-26 548-898 not yet reported which blocks → TELUS Integrated Communications 2782 Kitchener-Waterloo —
2017-10-26 628-259 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 IGNACIO CA
2017-10-26 806-415 7XXX which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J CHANNING TX
2017-10-26 806-501 7XXX which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J BOYS RANCH TX
2017-10-26 806-504 0XXX7XXX · 2 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J ADRIAN TX
2017-10-26 806-505 5XXX7XXX · 2 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J ESTELLINE TX
2017-10-26 806-506 0XXX7XXX · 2 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J DODSON TX
2017-10-26 806-514 7XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HARTLEY TX
2017-10-26 806-519 0XXX7XXX · 2 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LAKEVIEW TX

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.