Mobile operator · Brazil

Claro ASN, MCC/MNC and IP prefixes

Claro is a mobile network operator in Brazil, part of América Móvil. It routes traffic through 5 autonomous systems (AS22085, AS4230, AS27652, AS28351, ...), which announced 3,607 prefixes at our last probe, and its SIMs carry MCC/MNC 724-05, 724-12, 724-38.

ASNs
5
Prefixes
3,607
Reviewed
September 2026
Country
Brazil (BR)
Parent group
América Móvil
ASNs
AS22085, AS4230, AS27652, AS28351, AS28573
MCC / MNC
724-05, 724-12, 724-38
Network generations
4G LTE, 5G
ASNs confirmed
5 of 5
Announced prefixes
3,607 at probe on 2026-09-06
Official site
www.claro.com.br

Autonomous systems

Holder names and prefix counts come from the RIPE NCC's RIPEstat Data API, fetched on 2026-09-06. Role and confidence come from the evidence linked in each row; "confirmed" means a PeeringDB or RIPEstat record, or the operator's own site, names the operator.
Claro autonomous systems
ASNHolder (RIPEstat)RoleAnnouncedIPv4 prefixesIPv6 prefixesEvidence
AS22085AS22085 - Claro S/APeeringDB: Claro Brazil AS22085 · NSPMobile networkconfirmedyes1054source · RIPEstat · PeeringDB
AS4230AS4230 - CLARO S.A.Enterprise / transitconfirmedyes786source · RIPEstat
AS27652AS27652 - Claro S/APeeringDB: Claro S/ARole not documentedconfirmedyes250source · RIPEstat · PeeringDB
AS28351AS28351 - Claro NXT Telecomunicacoes LtdaPeeringDB: Nextel Telecomunicacoes AS28351 · Cable/DSL/ISPRole not documentedconfirmedyes30source · RIPEstat · PeeringDB
AS28573AS28573 - Claro NXT Telecomunicacoes LtdaPeeringDB: Claro S.A. (NET) · Cable/DSL/ISPFixed-lineconfirmedyes1,7121,719source · RIPEstat · PeeringDB

Mobile network codes

The MCC identifies the country and the MNC identifies the operator inside it. Together they appear in the IMSI of every SIM on the network and in device diagnostics; they are how a handset knows which network it is on.
Claro MCC and MNC
MCC-MNCMCCMNCSource
724-0572405en.wikipedia.org/wiki/Mobile_Network_Codes_in_IT
724-1272412en.wikipedia.org/wiki/Mobile_Network_Codes_in_IT
724-3872438en.wikipedia.org/wiki/Mobile_Network_Codes_in_IT

About Claro

Claro is a mobile network operator in Brazil, controlled by América Móvil. The registry records five ASNs registered to Claro entities, of which AS22085 is documented as carrying the mobile network. Claro's mobile country and network codes are 724-05, 724-12 and 724-38, with 724-05 the operational mobile network.

The registry holds five ASNs registered to Claro entities. AS22085 is the documented mobile ASN and announces 10 IPv4 prefixes against 54 IPv6 prefixes at the last probe; PeeringDB records it as Claro Brazil AS22085 with network type NSP. AS28573 is recorded as fixed, with 1,712 IPv4 against 1,719 IPv6 prefixes and a PeeringDB entry reading Claro S.A. (NET), type Cable/DSL/ISP. AS4230 is enterprise, 78 IPv4 against 6 IPv6, with no PeeringDB record. AS27652 and AS28351 announce 25 and 3 IPv4 prefixes and no IPv6.

An address whose origin ASN is AS22085 is routed by the network the registry documents as Claro's mobile side. AS28573 is cable broadband and AS4230 is enterprise and backbone, so an address originating in either is Claro-routed without being documented as mobile. AS27652 and AS28351 have no documented role, so an address from either could be mobile, fixed or enterprise, and the ASN alone does not settle it. Claro's mobile network runs 4G LTE and 5G.

Research note. All five candidates confirmed as Claro entities by RIPEstat holder and registro.br whois; PeeringDB lists AS27652 'Claro S/A' with website claro.com.br. Role evidence: AS22085 (whois responsible 'BCP SA', the São Paulo mobile operator merged into Claro in 2003 per Wikipedia) reverse DNS *.3g.claro.net.br and announces large /14 pools (177.56.0.0/14, 187.24.0.0/14) plus 54 IPv6 prefixes -> consumer mobile. AS27652 also responsible 'BCP SA' but 25 small v4 prefixes and no PTRs -> role not determined. AS4230 whois responsible 'Gerência Internet EMBRATEL' (legacy Embratel long-distance/enterprise backbone; 78 v4 prefixes) -> enterprise/backbone. AS28573 (Claro NXT, former NET cable) reverse DNS *.virtua.com.br, 1712 v4 / 1719 v6 prefixes -> fixed cable broadband. AS28351 (Claro NXT, 3 prefixes) role unknown. MNC 724-12 listed as Claro with unknown status; 724-38 is GSM-1900 fixed-wireless inherited from Vesper WLL licences (not consumer mobile); 724-05 is the operational mobile network. Parent: Wikipedia Claro Brasil 'Controlled by América Móvil'. claro.com.br/5g quotes coverage of ~4,800 cities (Anatel data) and 5G vs 4G speeds. Subscribers 87.65 million (Q1 2024) per Wikipedia Americas list.

Check whether an IP belongs to Claro

Look up the origin ASN of the address and compare it with the table above. RIPEstat answers for any address, and the RADB whois mirror lists the routes registered under an ASN.
Origin ASN of an address
curl -s "https://stat.ripe.net/data/prefix-overview/data.json?resource=203.0.113.9" | jq '.data.asns'
Routes registered under AS22085
whois -h whois.radb.net -- '-i origin AS22085' | grep ^route

Questions

What is Claro Brazil's ASN?
The registry records five ASNs held by Claro entities: AS22085, AS4230, AS27652, AS28351 and AS28573. AS22085 is the one documented as carrying the mobile network. AS28573 is recorded as fixed cable broadband and AS4230 as enterprise, while AS27652 and AS28351 have no documented role.
What is the MCC/MNC of Claro Brazil?
Claro Brazil is recorded under MCC 724 with the network codes 05, 12 and 38. 724-05 is the operational mobile network. 724-38 is a GSM-1900 fixed-wireless allocation inherited from Vesper WLL licences rather than a consumer mobile network, and the registry lists 724-12 with unknown status.
Is an IP from AS28573 a mobile IP?
The registry records AS28573, held by Claro NXT Telecomunicacoes, as fixed, and PeeringDB types it Cable/DSL/ISP under the name Claro S.A. (NET). An address originating there is routed by Claro but is not documented as mobile. AS22085 is the ASN documented for Claro's mobile network.

Where Claro meets other networks

PeeringDB records Claro as a participant at internet exchanges in 6 cities. Each city page lists the exchanges there and the other networks present.

Network cities in Brazil: São Paulo, Rio de Janeiro, Fortaleza, Barueri, Porto Alegre.

Sources

Operator and registry pages used for this entry, followed by the RIPEstat Data API (holder, announced prefixes) and the PeeringDB API (network records).

  1. [1]https://stat.ripe.net/data/as-overview/data.json?resource=AS22085
  2. [2]https://stat.ripe.net/data/as-overview/data.json?resource=AS27652
  3. [3]https://stat.ripe.net/data/as-overview/data.json?resource=AS4230
  4. [4]https://stat.ripe.net/data/as-overview/data.json?resource=AS28573
  5. [5]https://stat.ripe.net/data/as-overview/data.json?resource=AS28351
  6. [6]https://www.peeringdb.com/api/net?asn=27652
  7. [7]https://stat.ripe.net/data/announced-prefixes/data.json?resource=AS22085
  8. [8]https://stat.ripe.net/data/announced-prefixes/data.json?resource=AS28573
  9. [9]https://www.claro.com.br/5g
  10. [10]https://en.wikipedia.org/wiki/Claro_Brasil
  11. [11]https://en.wikipedia.org/wiki/List_of_mobile_network_operators_of_the_Americas
  12. [12]https://en.wikipedia.org/wiki/Mobile_Network_Codes_in_ITU_region_7xx_(South_America)
  13. [13]https://stat.ripe.net/docs/02.data-api/
  14. [14]https://www.peeringdb.com/apidocs/

ASN and prefix data describe how the operator's networks are registered and announced. They do not identify an individual subscriber or where a device is, since carriers route traffic from many areas through shared gateways.