NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 808
NEW CINGULAR WIRELESS PCS, LLC 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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 808-363 not yet reported which blocks → SPOK, INC. 6630 HONOLULU HI
— 808-366 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HONOLULU HI
— 808-370 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 XXXXXXXXXX HI
— 808-371 none assigned yet which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-372 none assigned yet which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-373 0XXX6XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-375 none assigned yet which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-377 0XXX4XXX6XXX · 2 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-380 not yet reported which blocks → HAWAIIAN TELCOM SERVICES COMPANY, INC. - HI 009G HONOLULU HI
— 808-381 not yet reported which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-382 not yet reported which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-383 not yet reported which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-384 not yet reported which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-385 not yet reported which blocks → T-MOBILE USA, INC. 6529 WAILUKU HI
— 808-386 not yet reported which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-387 not yet reported which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-388 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HONOLULU HI
— 808-389 not yet reported which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-390 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 XXXXXXXXXX HI
— 808-391 not yet reported which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-392 not yet reported which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-393 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-394 7XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-395 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-396 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-397 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX HI
— 808-421 7XXX8XXX9XXX · 2 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-422 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-423 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-424 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-426 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → SANDWICH ISLES COMMUNICATIONS, INC. 3021 HONOLULU HI
— 808-428 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-429 not yet reported which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-431 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K LIHUE HI
— 808-432 not yet reported which blocks → LEVEL 3 TELECOM OF HAWAII, LP - HI 8297 HONOLULU HI
— 808-433 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-435 0–9 XXXall 10 · 2 holders which blocks → WAVECOM SOLUTIONS CORPORATION - HI 7454 LANAI CITY HI
— 808-438 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-440 not yet reported which blocks → LEVEL 3 TELECOM OF HAWAII, LP - HI 8297 HONOLULU HI
— 808-441 not yet reported which blocks → LEVEL 3 TELECOM OF HAWAII, LP - HI 8297 HONOLULU HI
— 808-442 2XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 TELECOM OF HAWAII, LP - HI 8297 WAILUKU HI
— 808-443 1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 TELECOM OF HAWAII, LP - HI 8297 HILO HI
— 808-447 none assigned yet which blocks → WAVECOM SOLUTIONS CORPORATION - HI 7454 HONOLULU HI
— 808-448 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-449 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-453 0XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-455 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-456 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-458 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 732J HONOLULU HI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.