Mobile operatorBulgariaofficial site reviewed September 2026

A1 Bulgaria · Bulgaria

A1 Bulgaria is a mobile operator in Bulgaria and part of A1 Group (A1 Telekom Austria Group), whose shareholders are América Móvil and the Austrian government. The registry records eight ASNs registered to A1 Bulgaria EAD and no ASN with a documented mobile role; AS13124 is recorded as fixed. Its MCC/MNC is 284-01.

CountryBulgaria (BG)
Parent groupA1 Group (A1 Telekom Austria Group; shareholders América Móvil and the Austrian government)
MCC / MNC284-01
Network generations4G LTE, 5G
ASNs listed8 (8 confirmed)
Announced prefixes at probe1,666 on 2026-09-06

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.

ASNHolder (RIPEstat)RoleAnnouncedIPv4 / IPv6 prefixesEvidence
AS8672A1BG A1 Bulgaria EADRole not documented
confirmed
yes1 / 0source · RIPEstat
AS8717A1BG A1 Bulgaria EADRole not documented
confirmed
yes103 / 4source · RIPEstat
AS12716A1BG_MB A1 Bulgaria EAD
PeeringDB: A1 Bulgaria AS12716
Role not documented
confirmed
yes53 / 2source · RIPEstat · PeeringDB
AS13124A1BG_RSD A1 Bulgaria EADFixed-line
confirmed
yes441 / 73source · RIPEstat
AS24964A1BG A1 Bulgaria EADRole not documented
confirmed
no0 / 0source · RIPEstat
AS29580A1BG_RSG A1 Bulgaria EAD
PeeringDB: A1 Bulgaria AS29580
Role not documented
confirmed
yes607 / 20source · RIPEstat · PeeringDB
AS35141A1BG_RSS A1 Bulgaria EADRole not documented
confirmed
yes361 / 0source · RIPEstat
AS42157A1BG A1 Bulgaria EADRole not documented
confirmed
yes1 / 0source · RIPEstat

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.

MCC 284 · MNC 01

About A1 Bulgaria

The registry lists eight ASNs, all registered to A1 Bulgaria EAD: AS8672, AS8717, AS12716, AS13124, AS24964, AS29580, AS35141 and AS42157. None of them has a documented mobile role. AS29580 announced 607 IPv4 prefixes and 20 IPv6 prefixes at the last probe, AS13124 441 IPv4 and 73 IPv6, AS35141 361 IPv4 and no IPv6, AS8717 103 IPv4 and 4 IPv6, AS12716 53 IPv4 and 2 IPv6, and AS8672 and AS42157 one IPv4 prefix each. AS24964 is registered to the operator but announced nothing. PeeringDB holds records named A1 Bulgaria AS12716 and A1 Bulgaria AS29580, neither carrying a network type.

An address whose origin ASN is one of these eight is routed by A1 Bulgaria. Which of the eight carries the consumer 4G LTE and 5G network is not documented in the registry, so an address inside any of them could be mobile, fixed or enterprise, and the ASN alone does not settle the question. AS13124 is the single entry recorded as fixed, which argues against reading it as mobile. Anyone classifying traffic needs evidence beyond the origin ASN before calling a Bulgarian A1 address a mobile one.

Research note. All eight A1BG* ASNs resolve in RIPEstat to holder 'A1 Bulgaria EAD' (RIPE org ORG-MN1-RIPE); AS8717, AS12716, AS13124, AS29580 also have PeeringDB records (org 1528 / 20304). AS8717 is the main NSP record (PeeringDB: 'A1 BG EAD ... business and individual customers', 100 announced prefixes incl. BG-MTELNET allocations). AS13124 is typed Cable/DSL/ISP in PeeringDB (fixed); RIPE remarks still reference '--MOBILTEL'. AS24964 is registered to A1 but not announced. No public source fetched states which ASN carries the consumer 4G/5G mobile network, so roles are left 'unknown' rather than guessed; the AS12716 as-name 'A1BG_MB' is suggestive only. All other candidate ASNs (banks, universities, BAS, Vivacom, CETIN, Smartcom, Comnet, etc.) rejected as unrelated companies matched on the word 'Bulgaria'. MCC/MNC: no candidate rows were supplied; 284-01 (A1 BG, former Mobiltel/M-Tel) taken from the Wikipedia MNC table and corroborated by mcc-mnc-lookup.com. Generations: a1.bg/5g (5G ULTRA, >1500 Mbps recorded) and help.a1.bg/mobile/networks/4g (4G LTE on 900/1800/2100/2600 MHz). Parent: a1.bg/a1group states A1 Bulgaria is part of A1 Group, the European arm of América Móvil, with shareholders América Móvil and the Austrian government.

Checking whether an IP belongs to A1 Bulgaria

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 AS8672
whois -h whois.radb.net -- '-i origin AS8672' | grep ^route

Questions

What is A1 Bulgaria's ASN?

The registry records eight confirmed ASNs held by A1 Bulgaria EAD: AS8672, AS8717, AS12716, AS13124, AS24964, AS29580, AS35141 and AS42157. Seven of them announce prefixes; AS24964 is registered but announces none. No single ASN is documented as the one carrying the mobile network.

What is the MCC/MNC of A1 Bulgaria?

A1 Bulgaria uses MCC 284, the country code for Bulgaria, with MNC 01, written together as 284-01. That is the only MCC/MNC pair the registry records for the operator, and it is the identifier a handset reports when it is attached to this network.

Is an IP from AS29580 a mobile IP?

Not necessarily. AS29580 is registered to A1 Bulgaria EAD and had 607 IPv4 prefixes and 20 IPv6 prefixes at the last probe, but the registry records no role for it. The address could be mobile, fixed or enterprise, and the ASN by itself does not tell you which.

Sources

Mobile proxies in Bulgaria
Real 4G/5G and residential IPs on Bulgaria carriers, pay per GB, endpoints free.
Other operators in Bulgaria
VivacomYettel Bulgaria