NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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. 39
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 15
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
— 870-962 0XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → SOUTHWESTERN BELL 9533 URBANA AR
— 870-966 5XXX6XXX · 2 holders which blocks → BRIGHTSPEED OF ARKANSAS, LLC 1706 OZARKACRES AR
— 870-972 not yet reported which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-974 9XXX which blocks → SOUTHWESTERN BELL 9533 JONESBORO AR
— 870-976 not yet reported which blocks → AR
— 870-983 not yet reported which blocks → SOUTHWEST ARKANSAS TEL. COOP., INC. 1724 WASHINGTON AR
— 870-990 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX AR
— 870-992 4XXX5XXX6XXX · 3 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 ALMYRA AR
— 870-994 not yet reported which blocks → BRIGHTSPEED OF ARKANSAS, LLC 1706 ASH FLAT AR
— 870-995 6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HELENA AR
— 870-998 3XXX4XXX8XXX · 3 holders which blocks → BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 1144 DEVALLSBLF AR
— 872-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 872-213 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC 224C CHICGOZN02 IL
— 872-271 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
— 872-275 0–9 XXXall 10 · 5 holders which blocks → COMMIO, LLC 939H CHICGOZN01 IL
— 872-280 0–9 XXXall 10 · 5 holders which blocks → COMMIO, LLC 939H CHICGOZN04 IL
— 872-298 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H CHICGOZN01 IL
— 872-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 872-401 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CHICGOZN07 IL
— 872-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 872-469 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC 224C CHICGOZN03 IL
— 872-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 872-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST IL
— 872-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 872-700 not yet reported which blocks → IL
— 872-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 872-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 872-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 872-950 not yet reported which blocks → IL
— 872-958 not yet reported which blocks → IL
— 872-959 not yet reported which blocks → IL
— 872-976 not yet reported which blocks → IL
— 878-207 0–9 XXXall 10 · 6 holders which blocks → COMCAST IP PHONE, LLC 318J ROCHESTER PA
— 878-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 878-222 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - PA 547E NEWWLMNGTN PA
— 878-228 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J UNIONTOWN PA
— 878-269 0XXX1XXX4XXX5XXX · 3 holders which blocks → ONVOY, LLC - PA 547E PARKWOOD PA
— 878-288 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BOLIVAR PA
— 878-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 878-333 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E ELLWOOD CY PA
— 878-400 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - PA 547E WAMPUM PA
— 878-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 878-444 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - PA 547E HOMER CITY PA
— 878-500 0XXX5XXX which blocks → FRACTEL, LLC 965H FORD CITY PA
— 878-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 878-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST PA
— 878-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 878-666 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E MARION CTR PA
— 878-700 not yet reported which blocks → PA
— 878-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.