NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 — NPA 612
8X8, INC. 1
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2021-06-21 612-463 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2021-04-01 612-461 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2021-03-17 612-459 0–9 XXXall 10 · 4 holders which blocks → STRATUS NETWORKS 495J TWINCITIES MN
2020-11-13 612-682 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2020-11-11 612-457 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-10-13 612-946 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H TWINCITIES MN
2020-10-02 612-451 0–9 XXXall 10 · 2 holders which blocks → VONAGE AMERICA LLC 197D TWINCITIES MN
2020-10-02 612-452 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J TWINCITIES MN
2020-09-30 612-895 0–9 XXXall 10 · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J TWINCITIES MN
2020-09-01 612-662 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2020-08-19 612-449 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2020-07-13 612-842 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H TWINCITIES MN
2020-07-09 612-429 0–9 XXXall 10 · 3 holders which blocks → CSC WIRELESS, LLC 425J TWINCITIES MN
2020-04-17 612-448 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MN 5256 TWINCITIES MN
2020-03-25 612-447 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-03-25 612-450 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-03-25 612-453 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-02-04 612-427 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2020-01-17 612-446 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MN 5256 TWINCITIES MN
2019-12-23 612-416 0–9 XXXall 10 · 2 holders which blocks → HD CARRIER LLC 321J TWINCITIES MN
2019-12-12 612-688 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H TWINCITIES MN
2019-09-17 612-445 0–9 XXXall 10 · 3 holders which blocks → EXIANT COMMUNICATIONS LLC 114J TWINCITIES MN
2019-08-28 612-441 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2019-08-28 612-474 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E TWINCITIES MN
2019-07-05 612-439 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E TWINCITIES MN
2019-06-24 612-433 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2019-06-24 612-438 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2019-05-14 612-431 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E TWINCITIES MN
2019-01-14 612-428 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E TWINCITIES MN
2019-01-08 612-552 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 TWINCITIES MN
2018-12-13 612-422 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TWINCITIES MN
2018-11-30 612-421 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2018-11-21 612-420 0–9 XXXwhole prefix which blocks → QWEST CORPORATION 9631 TWINCITIES MN
2018-09-21 612-403 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 TWINCITIES MN
2018-09-19 612-712 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2018-06-27 612-398 0–9 XXXall 10 · 3 holders which blocks → ADVANCED TELECOM SOLUTIONS, LLC 181J TWINCITIES MN
2018-06-13 612-394 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2018-05-31 612-393 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TWINCITIES MN
2018-04-25 612-391 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2018-03-30 612-389 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E TWINCITIES MN
2018-01-15 612-380 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TWINCITIES MN
2018-01-15 612-383 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TWINCITIES MN
2018-01-05 612-368 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2017-10-31 612-364 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2017-10-11 612-358 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 TWINCITIES MN
2017-09-26 612-346 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2017-09-01 612-324 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2017-08-03 612-283 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2017-08-03 612-286 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D TWINCITIES MN
2017-07-07 612-271 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.