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
2020-10-13 320-488 4XXX8XXX · 2 holders which blocks → FRACTEL, LLC 965H RANDALL MN
2020-10-13 320-499 4XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H BRANDON MN
2020-10-13 320-644 0XXX2XXX4XXX5XXX · 3 holders which blocks → FRACTEL, LLC 965H MCGRATH MN
2020-10-13 320-799 7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H WAHKON MN
2020-10-13 320-822 2XXX8XXX · 2 holders which blocks → FRACTEL, LLC 965H MILLERVL MN
2020-10-13 320-899 1XXX2XXX6XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H PENNOCK MN
2020-10-13 320-933 3XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H KIMBALL MN
2020-10-13 320-966 1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → FRACTEL, LLC 965H ST MARTIN MN
2020-10-13 385-382 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - UT 117F KAYSVILLE UT
2020-10-13 406-614 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - MT 453F BIGFORK MT
2020-10-13 469-903 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2020-10-13 484-827 0–9 XXXwhole prefix which blocks → TON80 COMMUNICATIONS, LLC 516J PHPHSBZN10 PA
2020-10-13 513-778 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J CINCINNATI OH
2020-10-13 609-690 0–9 XXXall 10 · 6 holders which blocks → TWILIO INTERNATIONAL, INC. 506J TRENTON NJ
2020-10-13 612-946 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H TWINCITIES MN
2020-10-13 651-461 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2020-10-13 672-515 not yet reported which blocks → Videotron Ltd. 787G Vancouver —
2020-10-13 681-324 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → HD CARRIER LLC 321J CLENDENIN WV
2020-10-13 763-345 0XXX1XXX3XXX6XXX7XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H MONTWAVE MN
2020-10-13 763-363 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2020-10-13 763-465 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H TWINCITIES MN
2020-10-13 825-438 not yet reported which blocks → Videotron Ltd. 787G Calgary —
2020-10-13 952-592 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2020-10-12 218-577 0XXX1XXX2XXX6XXX7XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H NASHWAUK MN
2020-10-12 218-718 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → ONVOY, LLC - MN 184D EMBARRASS MN
2020-10-12 253-342 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2020-10-12 260-269 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - IN 097D ALBION IN
2020-10-12 272-246 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MT POCONO PA
2020-10-12 385-363 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 KAYSVILLE UT
2020-10-12 412-763 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PTGSBNZN10 PA
2020-10-12 479-399 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ROGERS AR
2020-10-12 479-403 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C BENTONVL AR
2020-10-12 605-971 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 ABERDEEN SD
2020-10-12 660-667 0XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MO 093F LEXINGTON MO
2020-10-12 765-512 1XXX2XXX3XXX5XXX · 3 holders which blocks → ONVOY, LLC - IN 097D WINGATE IN
2020-10-12 814-957 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 SAXTON PA
2020-10-12 870-641 0–9 XXXall 10 · 6 holders which blocks → HD CARRIER LLC 321J JONESBORO AR
2020-10-12 930-221 0XXX1XXX2XXX3XXX · 2 holders which blocks → ONVOY, LLC - IN 097D PATOKA IN
2020-10-09 213-776 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H LSAN DA 01 CA
2020-10-09 269-285 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E BENTON HBR MI
2020-10-09 276-332 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - VA 138E SALTVILLE VA
2020-10-09 434-431 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - VA 138E WHITMELL VA
2020-10-09 507-844 2XXX3XXX4XXX6XXX7XXX · 3 holders which blocks → FRACTEL, LLC 965H ST CHARLES MN
2020-10-09 507-955 0XXX4XXX5XXX7XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H MAPLETON MN
2020-10-09 507-966 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H MANKATO MN
2020-10-09 606-566 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H STAFORDSVL KY
2020-10-09 606-944 4XXX which blocks → FRACTEL, LLC 965H SALYERSVL KY
2020-10-09 620-416 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → TC WIRELESS, INC - KS 433H HILLSBORO KS
2020-10-09 641-219 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 CHARITON IA
2020-10-09 660-720 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - MO 093F WAVERLY MO

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.