Free tool · Data reference
Numbering plan explorer
Look up a phone number prefix to see its range type and the operator it was originally assigned to.
How this works and its limits
Runs in your browser: what you enter stays on your device and is never uploaded.
Ranges come from regulators’ numbering-plan publications and open numbering metadata, each country with its source and retrieval date. Where a regulator’s terms allow only a link, we link to its lookup instead of copying it.
The assignee shown is the original holder of the range, not the current carrier after porting. Range data is reference information.
Data sources and licences
Operator names, brands and codes shown here are public reference data compiled from national regulators and other public sources. Their appearance does not indicate any partnership, endorsement, agreement or connectivity between unicomam.com and the named operators. All trademarks belong to their owners. Data is provided “as is” with no warranty; verify against the official source before relying on it for routing, billing or compliance decisions.
Regulatory information is for reference only and is not legal advice; check the regulator link and the “last verified” date.
Fuente: Comisión Reguladora de Telecomunicaciones (CRT, antes IFT) – «MNC asignados», Plan Nacional de Numeración y Banco de Información de Telecomunicaciones (BIT), bit.crt.gob.mx (opens in a new tab); la fecha de consulta se muestra con los datos. Datos procesados por unicomam.com; no es una publicación oficial y no representa una postura oficial de la CRT. Source: CRT (formerly IFT), Mexico – assigned MNC list, National Numbering Plan and BIT. Processed by unicomam.com; not an official government publication.
Phone number parsing powered by libphonenumber-js (MIT) using Google libphonenumber metadata (Apache License 2.0). Validation covers number format and allocated ranges only; it does not check whether a number is live, and carrier names are the original range assignee, not the current carrier after porting.
How national numbering plans work
A national numbering plan divides a country's phone numbers into ranges and says what each range is for: mobile, fixed line, toll-free, premium rate and other services. The regulator assigns blocks of numbers to operators, so the first digits of a number tell you its type and the operator that first received its range.
Ranges are assigned in blocks of thousands or tens of thousands of numbers, and neighboring blocks can belong to different operators or services. Mexico, for example, publishes every assigned block of its ten-digit national numbers with its modality: mobile ranges where the calling party pays, mobile ranges where the mobile party pays, and fixed-line ranges.
Number portability lets subscribers keep their number when they switch operators. The prefix does not change, so the original assignee of a range and the current carrier of a number can differ. Range data tells you what a number is and where its range came from; the current carrier needs a portability or live network lookup, which this tool does not do.
Messaging platforms use range data to validate numbers before sending, to tell mobile from fixed lines, to route by destination network and to spot numbers outside allocated ranges.
Numbering plans change: regulators open new ranges, retire old ones and sometimes change number lengths. Each country in the explorer shows its source and date, and for a country whose regulator's terms allow only a link, the explorer points to the regulator instead of copying its data.
Number formats differ by country. Mexico uses ten-digit national numbers for every service; in Brazil a mobile number is a two-digit area code followed by nine digits starting with 9; Colombian mobile numbers have ten digits starting with 3, and Peruvian mobile numbers nine digits starting with 9. Type a number in national format or with its country code: the explorer removes the code.