NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

34 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 442
NEW CINGULAR WIRELESS PCS, LLC 14
ONVOY, LLC - CA 10
HD CARRIER LLC 4
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 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
2017-11-06 442-334-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALMDESERT CA
2017-11-01 442-270-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 EL CENTRO CA
2017-10-31 442-266-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OCSD OCSD CA
2017-10-24 442-270-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CENTRO CA
2017-10-24 442-270-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CENTRO CA
2017-10-05 442-249-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VTVL ADLN CA
2017-10-05 442-260-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DSERTHTSPG CA
2017-10-05 442-263-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PAUMA VLY CA
2017-09-29 442-216-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L VISTA CA
2017-09-29 442-217-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L VALLEY CTR CA
2017-09-29 442-515-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN MARCOS CA
2017-09-28 442-257-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ESCONDIDO CA
2017-09-28 442-266-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L OCSD OCSD CA
2017-09-25 442-215-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K INDIO CA
2017-09-25 442-292-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VTVL APVY CA
2017-09-25 442-297-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CENTRO CA
2017-09-20 442-219-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D VICTORVL CA
2017-09-20 442-270-0XXX 0000–0999Assigned METROPCS, INC. 5562 EL CENTRO CA
2017-09-20 442-270-9XXX 9000–9999Assigned METROPCS, INC. 5562 EL CENTRO CA
2017-09-14 442-208-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CALIPATRIA CA
2017-09-13 442-215-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D INDIO CA
2017-09-13 442-267-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K VTVL HSPR CA
2017-09-11 442-230-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BRAWLEY CA
2017-09-08 442-250-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CALEXICO CA
2017-08-22 442-287-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OCSD CRLS CA
2017-08-15 442-215-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 INDIO CA
2017-08-15 442-219-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C VICTORVL CA
2017-08-15 442-272-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C INYOKERN CA
2017-08-15 442-285-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CALIFORNCY CA
2017-08-02 442-218-0XXX 0000–0999Assigned TELNYX LLC 073H LKISABELLA CA
2017-08-02 442-228-8XXX 8000–8999Assigned TELNYX LLC 073H BISHOP CA
2017-08-02 442-249-9XXX 9000–9999Assigned TELNYX LLC 073H VTVL ADLN CA
2017-08-02 442-285-0XXX 0000–0999Assigned TELNYX LLC 073H CALIFORNCY CA
2017-07-27 442-212-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D PALM SPG CA
2017-07-27 442-212-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D PALM SPG CA
2017-07-17 442-217-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VALLEY CTR CA
2017-06-23 442-286-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ESCONDIDO CA
2017-06-22 442-247-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CALIFORNCY CA
2017-06-15 442-212-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C PALM SPG CA
2017-06-15 442-250-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CALEXICO CA
2017-06-15 442-260-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D DSERTHTSPG CA
2017-06-15 442-266-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OCSD OCSD CA
2017-06-13 442-246-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MORONGOVLY CA
2017-06-13 442-321-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HOMESTDVLY CA
2017-06-06 442-235-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BARSTOW CA
2017-06-06 442-287-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OCSD CRLS CA
2017-06-06 442-292-0XXX 0000–0999Assigned TELNYX LLC 073H VTVL APVY CA
2017-06-06 442-294-1XXX 1000–1999Assigned TELNYX LLC 073H RIDGECREST CA
2017-05-23 442-207-1XXX 1000–1999Assigned TELNYX LLC 073H FALLBROOK CA
2017-05-22 442-267-8XXX 8000–8999Assigned TELNYX LLC 073H VTVL HSPR CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.