NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

4 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 707
ONVOY, LLC - CA 2
NEW CINGULAR WIRELESS PCS, LLC 1
BANDWIDTH.COM CLEC, LLC - CA 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2014-03-12 707-652-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J VALLEJO CA
2014-03-12 707-724-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J VACAVILLE CA
2014-03-12 707-892-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WINDSOR CA
2014-03-12 707-934-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SONOMA CA
2014-03-11 707-296-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EUREKA CA
2014-03-11 707-380-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UKIAH CA
2014-03-11 707-389-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FRFLD-SUIS CA
2014-03-11 707-724-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VACAVILLE CA
2014-03-11 707-724-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VACAVILLE CA
2014-03-11 707-771-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BENICIA CA
2014-03-03 707-354-5XXX 5000–5999Assigned UNITED STATES CELLULAR - CA 6261 WILLITS CA
2014-02-28 707-298-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J EUREKA CA
2014-02-28 707-461-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOWER LAKE CA
2014-02-28 707-473-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J HEALDSBURG CA
2014-02-28 707-737-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CALISTOGA CA
2014-02-28 707-752-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BENICIA CA
2014-02-26 707-247-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PIERCY CA
2014-02-26 707-296-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E EUREKA CA
2014-02-26 707-353-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POINTARENA CA
2014-02-26 707-780-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PTLM MAIN CA
2014-02-25 707-617-2XXX 2000–2999Assigned CSC VOICE, LLC 612K FORTUNA CA
2014-02-11 707-607-3XXX 3000–3999Assigned CSC VOICE, LLC 612K FERNDALE CA
2014-02-11 707-630-3XXX 3000–3999Assigned CSC VOICE, LLC 612K ARCATA CA
2014-02-11 707-630-4XXX 4000–4999Assigned CSC VOICE, LLC 612K ARCATA CA
2014-02-11 707-630-5XXX 5000–5999Assigned CSC VOICE, LLC 612K ARCATA CA
2014-02-11 707-686-3XXX 3000–3999Assigned CSC VOICE, LLC 612K LOLETA CA
2014-02-11 707-783-3XXX 3000–3999Assigned CSC VOICE, LLC 612K RIO DELL CA
2014-02-11 707-844-3XXX 3000–3999Assigned CSC VOICE, LLC 612K BLUE LAKE CA
2014-02-11 707-851-3XXX 3000–3999Assigned CSC VOICE, LLC 612K HYDESVILLE CA
2014-02-10 707-617-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FORTUNA CA
2014-02-03 707-677-2XXX 2000–2999Assigned CSC VOICE, LLC 612K TRINIDAD CA
2014-01-31 707-764-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 RIO DELL CA
2014-01-27 707-791-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SANTA ROSA CA
2014-01-16 707-621-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 UKIAH CA
2014-01-14 707-648-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VALLEJO CA
2014-01-08 707-791-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SANTA ROSA CA
2013-12-12 707-244-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ST HELENA CA
2013-12-04 707-389-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FRFLD-SUIS CA
2013-11-26 707-724-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VACAVILLE CA
2013-11-22 707-641-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VALLEJO CA
2013-11-22 707-892-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 WINDSOR CA
2013-11-21 707-380-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 UKIAH CA
2013-11-21 707-389-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FRFLD-SUIS CA
2013-11-20 707-744-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HOPLAND CA
2013-11-08 707-296-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EUREKA CA
2013-11-06 707-296-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EUREKA CA
2013-11-06 707-302-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ST HELENA CA
2013-11-04 707-383-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C GARBERVL CA
2013-11-04 707-383-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C GARBERVL CA
2013-11-04 707-798-1XXX 1000–1999Assigned CSC VOICE, LLC 612K EUREKA 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.