Mobile operator · Bulgaria

A1 Bulgaria ASN, MCC/MNC and IP prefixes

A1 Bulgaria is a mobile network operator in Bulgaria, part of A1 Group (A1 Telekom Austria Group; shareholders América Móvil and the Austrian government). It routes traffic through 8 autonomous systems (AS8672, AS8717, AS12716, AS13124, ...), which announced 1,666 prefixes at our last probe, and its SIMs carry MCC/MNC 284-01.

ASNs
8
Prefixes
1,666
Reviewed
September 2026
Country
Bulgaria (BG)
Parent group
A1 Group (A1 Telekom Austria Group; shareholders América Móvil and the Austrian government)
ASNs
AS8672, AS8717, AS12716, AS13124, AS24964, AS29580, AS35141, AS42157
MCC / MNC
284-01
Network generations
4G LTE, 5G
ASNs confirmed
8 of 8
Announced prefixes
1,666 at probe on 2026-09-06
Official site
www.a1.bg

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.
A1 Bulgaria autonomous systems
ASNHolder (RIPEstat)RoleAnnouncedIPv4 prefixesIPv6 prefixesEvidence
AS8672A1BG A1 Bulgaria EADRole not documentedconfirmedyes10source · RIPEstat
AS8717A1BG A1 Bulgaria EADRole not documentedconfirmedyes1034source · RIPEstat
AS12716A1BG_MB A1 Bulgaria EADPeeringDB: A1 Bulgaria AS12716Role not documentedconfirmedyes532source · RIPEstat · PeeringDB
AS13124A1BG_RSD A1 Bulgaria EADFixed-lineconfirmedyes44173source · RIPEstat
AS24964A1BG A1 Bulgaria EADRole not documentedconfirmedno00source · RIPEstat
AS29580A1BG_RSG A1 Bulgaria EADPeeringDB: A1 Bulgaria AS29580Role not documentedconfirmedyes60720source · RIPEstat · PeeringDB
AS35141A1BG_RSS A1 Bulgaria EADRole not documentedconfirmedyes3610source · RIPEstat
AS42157A1BG A1 Bulgaria EADRole not documentedconfirmedyes10source · 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.
A1 Bulgaria MCC and MNC
MCC-MNCMCCMNCSource
284-0128401en.wikipedia.org/wiki/Mobile_Network_Codes_in_IT

About A1 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.

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.

Check 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.

Where A1 Bulgaria meets other networks

PeeringDB records A1 Bulgaria as a participant at internet exchanges in 3 cities. Each city page lists the exchanges there and the other networks present.

Network cities in Bulgaria: Sofia, Varna.

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://www.a1.bg/
  2. [2]https://www.a1.bg/a1group
  3. [3]https://www.a1.bg/5g
  4. [4]https://help.a1.bg/mobile/networks/4g
  5. [5]https://en.wikipedia.org/wiki/Mobile_Network_Codes_in_ITU_region_2xx_(Europe)
  6. [6]https://mcc-mnc-lookup.com/country/bg/
  7. [7]https://www.peeringdb.com/api/net?asn=8717
  8. [8]https://www.peeringdb.com/api/net?asn=12716
  9. [9]https://www.peeringdb.com/api/net?asn=13124
  10. [10]https://www.peeringdb.com/api/net?asn=29580
  11. [11]https://stat.ripe.net/data/as-overview/data.json?resource=AS8717
  12. [12]https://stat.ripe.net/data/as-overview/data.json?resource=AS8672
  13. [13]https://stat.ripe.net/data/as-overview/data.json?resource=AS12716
  14. [14]https://stat.ripe.net/data/as-overview/data.json?resource=AS13124
  15. [15]https://stat.ripe.net/data/as-overview/data.json?resource=AS24964
  16. [16]https://stat.ripe.net/data/as-overview/data.json?resource=AS29580
  17. [17]https://stat.ripe.net/data/as-overview/data.json?resource=AS35141
  18. [18]https://stat.ripe.net/data/as-overview/data.json?resource=AS42157
  19. [19]https://rest.db.ripe.net/ripe/aut-num/AS13124.json
  20. [20]https://rest.db.ripe.net/search.json?query-string=5.53.128.0/17&type-filter=inetnum&flags=no-referenced
  21. [21]https://stat.ripe.net/docs/02.data-api/
  22. [22]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.