NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 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
8X8, INC. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2001-09-21 912-720 not yet reported which blocks → AL-CALL, INC. - GA 3622 DOUGLAS GA
2001-09-21 919-699 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DURHAM NC
2001-09-21 919-946 1XXX2XXX3XXX4XXX5XXX6XXX7XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 RALEIGH NC
2001-09-21 925-339 not yet reported which blocks → METROPCS, INC. 5562 LIVERMORE CA
2001-09-21 925-565 not yet reported which blocks → METROPCS, INC. 5562 ANTIOCH CA
2001-09-21 925-594 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 DANVILLE CA
2001-09-21 925-812 6XXX7XXX8XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 MARTINEZ CA
2001-09-21 949-939 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SADLBK VLY CA
2001-09-21 978-702 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HAVERHILL MA
2001-09-20 304-444 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2001-09-20 304-550 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHRLSTNZN1 WV
2001-09-20 352-552 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 LEESBURG FL
2001-09-20 540-303 4XXX5XXX6XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WINCHESTER VA
2001-09-20 540-915 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ROANOKE VA
2001-09-20 626-549 4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 COVINA CA
2001-09-20 626-590 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PSDN PSDN CA
2001-09-20 662-524 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 WEST POINT MS
2001-09-20 662-537 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 GREENVILLE MS
2001-09-20 802-309 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VT 6390 ST ALBANS VT
2001-09-20 802-989 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VT 6390 MIDDLEBURY VT
2001-09-20 813-313 0XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → AT&T - LOCAL 7421 TAMPACEN FL
2001-09-19 209-298 not yet reported which blocks → T-MOBILE USA, INC. 6529 STOCKTON CA
2001-09-19 209-872 7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MODESTO CA
2001-09-19 250-760 not yet reported which blocks → TELUS 8086 Wellington —
2001-09-19 323-228 none assigned yet which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 11 CA
2001-09-19 323-401 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 14 CA
2001-09-19 323-595 3XXX4XXX8XXX · 2 holders which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 13 CA
2001-09-19 323-833 4XXX which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 09 CA
2001-09-19 323-841 not yet reported which blocks → T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2001-09-19 403-585 not yet reported which blocks → Bell Mobility 6574 Calgary —
2001-09-19 403-821 not yet reported which blocks → TELUS 8084 Drumheller —
2001-09-19 408-421 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SNJS NORTH CA
2001-09-19 510-415 not yet reported which blocks → T-MOBILE USA, INC. 6529 HAYWARD CA
2001-09-19 510-691 0XXX2XXX4XXX5XXX6XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 HRCUL-RODE CA
2001-09-19 519-716 not yet reported which blocks → Bell Mobility 6574 Hespeler —
2001-09-19 530-921 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 REDDING CA
2001-09-19 559-709 not yet reported which blocks → T-MOBILE USA, INC. 6529 FRESNO CA
2001-09-19 603-302 not yet reported which blocks → CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 5113 MANCHESTER NH
2001-09-19 619-347 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CORONADO CA
2001-09-19 619-395 8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 CHULAVISTA CA
2001-09-19 619-549 not yet reported which blocks → T-MOBILE USA, INC. 6529 SNDG SNDG CA
2001-09-19 626-347 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 COVINA CA
2001-09-19 626-780 not yet reported which blocks → T-MOBILE USA, INC. 6529 EL MONTE CA
2001-09-19 707-704 0XXX5XXX which blocks → METROPCS, INC. 5562 VALLEJO CA
2001-09-19 707-853 7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VALLEJO CA
2001-09-19 714-655 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HUNTITNBCH CA
2001-09-19 714-697 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA ANA CA
2001-09-19 714-724 not yet reported which blocks → T-MOBILE USA, INC. 6529 SANTA ANA CA
2001-09-19 724-797 8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BELLEVRNON PA
2001-09-19 775-287 3XXX which blocks → T-MOBILE USA, INC. 6529 RENO NV

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.