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
— 808-551 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HONOLULU HI
— 808-552 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 KAUNAKAKAI HI
— 808-553 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 KAUNAKAKAI HI
— 808-554 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HONOLULU HI
— 808-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST HI
— 808-557 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 HILO HI
— 808-558 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 KAUNAKAKAI HI
— 808-559 1XXX2XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - HI 210H LANAI CITY HI
— 808-560 not yet reported which blocks → SANDWICH ISLES COMMUNICATIONS, INC. 3021 KAUNAKAKAI HI
— 808-561 none assigned yet which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
— 808-563 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - HI 6516 LANAI CITY HI
— 808-564 not yet reported which blocks → LEVEL 3 TELECOM OF HAWAII, LP - HI 8297 HONOLULU HI
— 808-565 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 LANAI CITY HI
— 808-566 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-567 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 KAUNAKAKAI HI
— 808-568 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 LANAI CITY HI
— 808-569 not yet reported which blocks → SPOK, INC. 6630 HONOLULU HI
— 808-571 not yet reported which blocks → SPOK, INC. 6630 HONOLULU HI
— 808-572 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 WAILUKU HI
— 808-573 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 WAILUKU HI
— 808-574 not yet reported which blocks → SPOK, INC. 6630 HONOLULU HI
— 808-575 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 WAILUKU HI
— 808-576 not yet reported which blocks → SPOK, INC. 6630 HONOLULU HI
— 808-577 not yet reported which blocks → SPOK, INC. 6630 HONOLULU HI
— 808-578 not yet reported which blocks → SPOK, INC. 6630 HONOLULU HI
— 808-579 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 WAILUKU HI
— 808-581 not yet reported which blocks → SPOK, INC. 6630 HONOLULU HI
— 808-584 not yet reported which blocks → SPOK, INC. 6630 HONOLULU HI
— 808-585 1XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-586 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-587 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-588 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-589 6XXX7XXX8XXX9XXX · 2 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-590 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-591 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-592 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-593 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-594 2XXX3XXX6XXX7XXX8XXX9XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-595 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-596 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-597 0XXX4XXX6XXX7XXX · 2 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-598 not yet reported which blocks → SPOK, INC. 6630 HONOLULU HI
— 808-599 0XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX HI
— 808-621 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-622 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-623 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-624 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-625 not yet reported which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HONOLULU HI
— 808-626 5XXX which blocks → HAWAIIAN TELCOM, INC. - HI 3100 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.