NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 939
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-10-02 | 939-293-0XXX | 0000–0999 | Assigned | NEUTRAL TANDEM - PR | 559F | SANTURCE | PR |
| 2025-10-02 | 939-309-0XXX | 0000–0999 | Assigned | NEUTRAL TANDEM - PR | 559F | GUAYAMA | PR |
| 2025-10-02 | 939-309-1XXX | 1000–1999 | Assigned | NEUTRAL TANDEM - PR | 559F | GUAYAMA | PR |
| 2025-10-02 | 939-309-6XXX | 6000–6999 | Assigned | NEUTRAL TANDEM - PR | 559F | GUAYAMA | PR |
| 2025-10-02 | 939-344-8XXX | 8000–8999 | Assigned | NEUTRAL TANDEM - PR | 559F | SAN GERMAN | PR |
| 2025-10-02 | 939-347-1XXX | 1000–1999 | Assigned | NEUTRAL TANDEM - PR | 559F | SAN GERMAN | PR |
| 2025-10-02 | 939-373-8XXX | 8000–8999 | Assigned | NEUTRAL TANDEM - PR | 559F | AGUADILLA | PR |
| 2025-10-02 | 939-373-9XXX | 9000–9999 | Assigned | NEUTRAL TANDEM - PR | 559F | AGUADILLA | PR |
| 2025-10-02 | 939-427-0XXX | 0000–0999 | Assigned | NEUTRAL TANDEM - PR | 559F | SANTURCE | PR |
| 2025-10-02 | 939-427-1XXX | 1000–1999 | Assigned | NEUTRAL TANDEM - PR | 559F | SANTURCE | PR |
| 2024-05-01 | 939-484-0XXX | 0000–0999 | Assigned | NEUTRAL TANDEM - PR | 559F | SANTURCE | PR |
| 2024-05-01 | 939-484-9XXX | 9000–9999 | Assigned | NEUTRAL TANDEM - PR | 559F | SANTURCE | PR |
| 2022-12-01 | 939-600-9XXX | 9000–9999 | Assigned | NEUTRAL TANDEM - PR | 559F | PUEBLOVIEJ | PR |
| 2022-12-01 | 939-610-9XXX | 9000–9999 | Assigned | NEUTRAL TANDEM - PR | 559F | BAYAMONSUR | PR |
| 2022-09-07 | 939-320-7XXX | 7000–7999 | Assigned | NEUTRAL TANDEM - PR | 559F | SANTURCE | PR |
| 2022-09-07 | 939-320-8XXX | 8000–8999 | Assigned | NEUTRAL TANDEM - PR | 559F | SANTURCE | PR |
| 2022-09-06 | 939-221-0XXX | 0000–0999 | Assigned | NEUTRAL TANDEM - PR | 559F | LUQUILLO | PR |
| 2021-08-11 | 939-355-6XXX | 6000–6999 | Assigned | NEUTRAL TANDEM - PR | 559F | BAYAMONNOR | PR |
| 2021-08-11 | 939-355-7XXX | 7000–7999 | Assigned | NEUTRAL TANDEM - PR | 559F | BAYAMONNOR | PR |
| 2021-08-06 | 939-220-7XXX | 7000–7999 | Assigned | NEUTRAL TANDEM - PR | 559F | HUMACAO | PR |
| 2021-08-06 | 939-220-8XXX | 8000–8999 | Assigned | NEUTRAL TANDEM - PR | 559F | HUMACAO | PR |
| 2021-07-06 | 939-214-3XXX | 3000–3999 | Assigned | NEUTRAL TANDEM - PR | 559F | LAJAS | PR |
| 2021-07-06 | 939-214-4XXX | 4000–4999 | Assigned | NEUTRAL TANDEM - PR | 559F | LAJAS | PR |
| 2021-07-06 | 939-229-3XXX | 3000–3999 | Assigned | NEUTRAL TANDEM - PR | 559F | SANTURCEES | PR |
| 2021-07-06 | 939-229-4XXX | 4000–4999 | Assigned | NEUTRAL TANDEM - PR | 559F | SANTURCEES | PR |
| 2021-07-06 | 939-233-5XXX | 5000–5999 | Assigned | NEUTRAL TANDEM - PR | 559F | FAJARDO | PR |
| 2021-07-06 | 939-233-6XXX | 6000–6999 | Assigned | NEUTRAL TANDEM - PR | 559F | FAJARDO | PR |
| 2021-07-06 | 939-393-4XXX | 4000–4999 | Assigned | NEUTRAL TANDEM - PR | 559F | BARCELONTA | PR |
| 2021-07-06 | 939-393-5XXX | 5000–5999 | Assigned | NEUTRAL TANDEM - PR | 559F | BARCELONTA | PR |
| 2021-07-06 | 939-412-2XXX | 2000–2999 | Assigned | NEUTRAL TANDEM - PR | 559F | LEVITTOWN | PR |
| 2021-07-06 | 939-412-3XXX | 3000–3999 | Assigned | NEUTRAL TANDEM - PR | 559F | LEVITTOWN | PR |
| 2021-07-06 | 939-459-5XXX | 5000–5999 | Assigned | NEUTRAL TANDEM - PR | 559F | MANATI | PR |
| 2021-07-06 | 939-459-6XXX | 6000–6999 | Assigned | NEUTRAL TANDEM - PR | 559F | MANATI | PR |
| 2021-07-06 | 939-478-2XXX | 2000–2999 | Assigned | NEUTRAL TANDEM - PR | 559F | CAYEY | PR |
| 2021-07-06 | 939-478-3XXX | 3000–3999 | Assigned | NEUTRAL TANDEM - PR | 559F | CAYEY | PR |
| 2021-07-06 | 939-606-3XXX | 3000–3999 | Assigned | NEUTRAL TANDEM - PR | 559F | MAYAGUEZ | PR |
| 2021-07-06 | 939-606-4XXX | 4000–4999 | Assigned | NEUTRAL TANDEM - PR | 559F | MAYAGUEZ | PR |
| 2021-07-06 | 939-808-7XXX | 7000–7999 | Assigned | NEUTRAL TANDEM - PR | 559F | TRUJILLOAL | PR |
| 2021-07-06 | 939-808-8XXX | 8000–8999 | Assigned | NEUTRAL TANDEM - PR | 559F | TRUJILLOAL | PR |
| 2020-12-16 | 939-749-7XXX | 7000–7999 | Assigned | NEUTRAL TANDEM - PR | 559F | COAMO | PR |
| 2020-12-16 | 939-759-7XXX | 7000–7999 | Assigned | NEUTRAL TANDEM - PR | 559F | SANTURCE | PR |
| 2020-12-16 | 939-779-7XXX | 7000–7999 | Assigned | NEUTRAL TANDEM - PR | 559F | VILLALBA | PR |
| 2020-12-16 | 939-839-7XXX | 7000–7999 | Assigned | NEUTRAL TANDEM - PR | 559F | YABUCOA | PR |
| 2020-12-15 | 939-359-3XXX | 3000–3999 | Assigned | NEUTRAL TANDEM - PR | 559F | MOCA | PR |
| 2020-12-15 | 939-569-5XXX | 5000–5999 | Assigned | NEUTRAL TANDEM - PR | 559F | OROCOVIS | PR |
| 2020-12-15 | 939-629-6XXX | 6000–6999 | Assigned | NEUTRAL TANDEM - PR | 559F | SANTANA | PR |
| 2020-12-15 | 939-814-8XXX | 8000–8999 | Assigned | NEUTRAL TANDEM - PR | 559F | UTUADO | PR |
| 2020-12-15 | 939-915-3XXX | 3000–3999 | Assigned | NEUTRAL TANDEM - PR | 559F | VEGA ALTA | PR |
| 2020-12-14 | 939-369-3XXX | 3000–3999 | Assigned | NEUTRAL TANDEM - PR | 559F | AGUADA | PR |
| 2020-12-14 | 939-739-3XXX | 3000–3999 | Assigned | NEUTRAL TANDEM - PR | 559F | TOA ALTA | PR |
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.