NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

JUANA DIAZ prefixes in area code 787

NANPA records 4 assigned NXX blocks to rate center JUANA DIAZ in area code 787, 0.5% of the 777 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 3 holders hold those blocks, the largest being PUERTO RICO TEL. CO. (2), LIBERTY MOBILE PUERTO RICO INC. (1), WORLDNET TELECOMMUNICATIONS, INC. - PR (1). The earliest assignment on record here is 2007-09-05 and the most recent 2007-09-05. 2 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.5% of 787
3 holders of record
2 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
787-260 PUERTO RICO TEL. CO. – no yes
787-580 Liberty LIBERTY MOBILE PUERTO RICO INC. – yes yes
787-837 PUERTO RICO TEL. CO. – no yes
787-913 WORLDNET TELECOMMUNICATIONS, INC. - PR 2007-09-05 yes yes

The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.

Who holds the blocks

HolderBrandBlocksShare here
PUERTO RICO TEL. CO. – 2 50%
LIBERTY MOBILE PUERTO RICO INC. Liberty 1 25%
WORLDNET TELECOMMUNICATIONS, INC. - PR – 1 25%

Frequently asked

Which prefixes belong to JUANA DIAZ in area code 787?

4 blocks: 260, 580, 837, 913. The table above gives the holder of each.

Which carriers have numbers in JUANA DIAZ?

PUERTO RICO TEL. CO. (2 blocks), LIBERTY MOBILE PUERTO RICO INC. (1 block), WORLDNET TELECOMMUNICATIONS, INC. - PR (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is JUANA DIAZ a city?

It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.

Other rate centers in 787

All 777 prefixes in 787