NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 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, all time — NPA 619
COMCAST PHONE OF CALIFORNIA, LLC 195
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
2021-06-04 619-945-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2021-06-04 619-945-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2021-06-04 619-945-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2021-06-04 619-945-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2021-06-04 619-945-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2021-06-04 619-945-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2021-06-04 619-945-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2021-06-04 619-945-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2021-06-04 619-945-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2021-06-04 619-945-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2019-11-06 619-605-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG LVTA CA
2019-11-06 619-605-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG LVTA CA
2019-10-10 619-613-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2019-08-27 619-605-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG LVTA CA
2019-07-12 619-860-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2019-06-26 619-605-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG LVTA CA
2019-06-26 619-605-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG LVTA CA
2019-04-17 619-432-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2019-04-17 619-539-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2019-04-17 619-782-9XXX 9000–9999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2019-04-17 619-915-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2018-12-17 619-856-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NATIONALCY CA
2018-12-17 619-856-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NATIONALCY CA
2018-12-13 619-499-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L EL CAJON CA
2018-12-13 619-499-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L EL CAJON CA
2018-12-13 619-499-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L EL CAJON CA
2018-12-13 619-499-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L EL CAJON CA
2018-10-10 619-439-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2018-10-10 619-439-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2018-07-24 619-349-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2018-07-24 619-349-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2018-07-17 619-310-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2018-07-17 619-310-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2018-05-17 619-915-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2018-05-17 619-915-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2018-05-11 619-510-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2018-05-09 619-655-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L EL CAJON CA
2018-05-08 619-622-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2018-05-08 619-830-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2017-10-10 619-439-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA MESA CA
2017-10-04 619-612-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L HARBSNALPN CA
2017-09-29 619-380-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2017-09-29 619-790-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PINEVALLEY CA
2017-09-28 619-486-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L EL CAJON CA
2017-09-28 619-765-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NATIONALCY CA
2017-09-28 619-775-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CORONADO CA
2017-09-18 619-349-0XXX 0000–0999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L CHULAVISTA CA
2016-02-16 619-505-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L NATIONALCY CA
2015-10-05 619-844-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG CA
2015-10-05 619-844-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG SNDG 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.