NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

31 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 530
ONVOY, LLC - CA 16
BANDWIDTH.COM CLEC, LLC - CA 6
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 4
OPENTACT INC. 3
T-MOBILE USA, INC. 2
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2020-12-11 530-686-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J HOMEWOOD CA
2020-12-11 530-695-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J LIVE OAK CA
2020-12-11 530-742-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J MARYSVILLE CA
2020-12-11 530-846-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J GRIDLEY CA
2020-12-09 530-382-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2020-12-09 530-382-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2020-12-09 530-382-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 AUBN MAIN CA
2020-12-09 530-528-5XXX 5000–5999Assigned TERRA NOVA TELECOM INC. 145J RED BLUFF CA
2020-12-09 530-589-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J OROVILLE CA
2020-12-09 530-625-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J HOOPA CA
2020-12-09 530-731-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J GRENADA CA
2020-12-09 530-831-1XXX 1000–1999Assigned TERRA NOVA TELECOM INC. 145J PORTOLA CA
2020-12-09 530-868-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J BIGGS CA
2020-12-09 530-873-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J PARADISE CA
2020-12-02 530-319-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 REDDING CA
2020-12-02 530-319-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 REDDING CA
2020-12-02 530-790-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MARYSVILLE CA
2020-12-02 530-821-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MARYSVILLE CA
2020-11-23 530-599-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MARYSVILLE CA
2020-11-23 530-608-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TRUCKEE CA
2020-11-19 530-855-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHICO CA
2020-11-16 530-399-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHICO CA
2020-11-16 530-399-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHICO CA
2020-11-16 530-630-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHICO CA
2020-11-16 530-630-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHICO CA
2020-11-16 530-764-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L OROVILLE CA
2020-11-16 530-783-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PARADISE CA
2020-11-14 530-835-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C NOSAN JUAN CA
2020-11-14 530-835-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C NOSAN JUAN CA
2020-11-14 530-835-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C NOSAN JUAN CA
2020-11-14 530-935-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C GEORGETOWN CA
2020-11-14 530-935-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C GEORGETOWN CA
2020-11-14 530-935-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C GEORGETOWN CA
2020-11-11 530-240-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C PLVL KYBRZ CA
2020-11-11 530-240-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C PLVL KYBRZ CA
2020-11-11 530-291-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PLVL KYBRZ CA
2020-11-03 530-702-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WOODLAND CA
2020-10-30 530-309-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WOODLAND CA
2020-10-30 530-336-8XXX 8000–8999Assigned FRACTEL, LLC 965H FALLRVRMLS CA
2020-10-24 530-799-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MARYSVILLE CA
2020-10-23 530-630-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICO CA
2020-10-23 530-630-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICO CA
2020-10-23 530-648-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GRVY MAIN CA
2020-10-12 530-399-4XXX 4000–4999Assigned HD CARRIER LLC 321J CHICO CA
2020-10-12 530-774-9XXX 9000–9999Assigned HD CARRIER LLC 321J CHICO CA
2020-10-09 530-460-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F GRVY MAIN CA
2020-10-09 530-807-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NTAH THCY CA
2020-10-06 530-455-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LIVE OAK CA
2020-09-23 530-557-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NEVADACITY CA
2020-09-20 530-799-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L MARYSVILLE CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.