Autonomous System

AS13124 A1 Bulgaria EAD

ISPActiveBulgariaRIPE

AS13124 (A1BG_RSD) is an ISP network operated by A1 Bulgaria EAD in Bulgaria, registered with RIPE. It has 432 IPv4 prefixes with 359,936 addresses and 68 IPv6 prefixes, which makes it the 829th largest of 82,558 active autonomous systems by IPv4 space.

IPv4 addresses359,936in 432 prefixes
IPv6 prefixes68≈ 2.2 × 10²⁷ addresses
Size rank#829of 82,558 active ASNs
Abuser scoreVery Low0.04% of its addresses flagged · method

Details

OrganizationA1 Bulgaria EAD
AS nameA1BG_RSD
Websitea1.bg
Country Bulgaria (BG)
Network typeISP
RegistryRIPE
Abuse contactRIPE.Abuse@a1.bg
Registered1970-01-01
Last updated2026-04-10

IPv4 prefixes

432 prefixes · 359,936 addresses
NetworkAddressesFirst – last address
87.97.192.0/1816,38487.97.192.0 – 87.97.255.255
5.53.192.0/198,1925.53.192.0 – 5.53.223.255
85.130.0.0/198,19285.130.0.0 – 85.130.31.255
87.97.192.0/198,19287.97.192.0 – 87.97.223.255
87.97.224.0/198,19287.97.224.0 – 87.97.255.255
130.204.0.0/198,192130.204.0.0 – 130.204.31.255
77.244.192.0/204,09677.244.192.0 – 77.244.207.255
87.97.144.0/204,09687.97.144.0 – 87.97.159.255
87.97.192.0/204,09687.97.192.0 – 87.97.207.255
89.215.144.0/204,09689.215.144.0 – 89.215.159.255
130.204.32.0/204,096130.204.32.0 – 130.204.47.255
130.204.48.0/204,096130.204.48.0 – 130.204.63.255
130.204.80.0/204,096130.204.80.0 – 130.204.95.255
130.204.96.0/204,096130.204.96.0 – 130.204.111.255
130.204.112.0/204,096130.204.112.0 – 130.204.127.255
130.204.144.0/204,096130.204.144.0 – 130.204.159.255
130.204.160.0/204,096130.204.160.0 – 130.204.175.255
151.251.0.0/204,096151.251.0.0 – 151.251.15.255
151.251.16.0/204,096151.251.16.0 – 151.251.31.255
151.251.80.0/204,096151.251.80.0 – 151.251.95.255
151.251.208.0/204,096151.251.208.0 – 151.251.223.255
213.191.176.0/204,096213.191.176.0 – 213.191.191.255
213.240.192.0/204,096213.240.192.0 – 213.240.207.255
213.240.208.0/204,096213.240.208.0 – 213.240.223.255
5.53.128.0/212,0485.53.128.0 – 5.53.135.255
The 25 largest of 432. The API and the database have all of them.

IPv6 prefixes

68 prefixes
  • 2a00:4802:a00::/40
  • 2a00:4802:e00::/40
  • 2a00:4802:1a00::/40
  • 2a00:4800:a0::/44
  • 2a00:4800:e0::/44
  • 2a00:4800:1a0::/44
  • 2a00:4802:220::/44
  • 2a00:4802:260::/44
  • 2a00:4802:280::/44
  • 2a00:4802:2a0::/44
  • 2a00:4802:2c0::/44
  • 2a00:4802:2e0::/44
  • 2a00:4802:300::/44
  • 2a00:4802:320::/44
  • 2a00:4802:350::/44
  • 2a00:4802:360::/44
  • 2a00:4802:380::/44
  • 2a00:4802:3a0::/44
  • 2a00:4802:a00::/44
  • 2a00:4802:a20::/44
  • 2a00:4802:a40::/44
  • 2a00:4802:a60::/44
  • 2a00:4802:a80::/44
  • 2a00:4802:aa0::/44
  • 2a00:4802:d00::/44
The 25 largest of 68. The API and the database have all of them.

Query AS13124 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS13124&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS13124, with or without a key:

curl "https://api.ipapi.is/?q=87.97.192.1"

Other networks of A1 Bulgaria EAD

AS8717 A1 Bulgaria EAD990,464 IPv4 addressesAS29580 A1 Bulgaria EAD264,960 IPv4 addressesAS35141 A1 Bulgaria EAD111,360 IPv4 addressesAS12716 A1 Bulgaria EAD41,472 IPv4 addresses

Largest networks in Bulgaria

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