NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 939-511 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PR |
| — | 939-555 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | DIR ASST | PR |
| — | 939-579 | not yet reported which blocks → | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAGUAS | PR |
| — | 939-611 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PR |
| — | 939-628 | 2XXX which blocks → | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR |
| — | 939-630 | not yet reported which blocks → | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR |
| — | 939-639 | not yet reported which blocks → | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR |
| — | 939-640 | not yet reported which blocks → | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR |
| — | 939-642 | not yet reported which blocks → | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR |
| — | 939-644 | not yet reported which blocks → | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR |
| — | 939-645 | 9XXX which blocks → | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR |
| — | 939-655 | 0–9 XXXall 10 · 2 holders which blocks → | LIBERTY MOBILE PUERTO RICO INC. | 639J | CAROLINA | PR |
| — | 939-700 | not yet reported which blocks → | PR | |||
| — | 939-711 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PR |
| — | 939-716 | 0–9 XXXall 10 · 2 holders which blocks → | LIBERTY COMMUNICATIONS OF PUERTO RICO LLC | 955G | CAGUAS | PR |
| — | 939-717 | not yet reported which blocks → | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR |
| — | 939-811 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PR |
| — | 939-911 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | PR |
| — | 939-940 | not yet reported which blocks → | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR |
| — | 939-950 | not yet reported which blocks → | PR | |||
| — | 939-958 | not yet reported which blocks → | PR | |||
| — | 939-959 | not yet reported which blocks → | PR | |||
| — | 939-969 | not yet reported which blocks → | LIBERTY MOBILE PUERTO RICO INC. | 639J | SANTURCE | PR |
| — | 939-976 | not yet reported which blocks → | PR |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.