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 441 IPv4 prefixes with 362,496 addresses and 72 IPv6 prefixes, which makes it the 831st largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses362,496in 441 prefixes
IPv6 prefixes72≈ 2.3 × 10²⁷ addresses
Size rank#831of 82,200 active ASNs
Abuser scoreLow0.06% 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

441 prefixes · 362,496 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 441. The API and the database have all of them.

IPv6 prefixes

72 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 72. 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 EAD989,952 IPv4 addressesAS29580 A1 Bulgaria EAD263,680 IPv4 addressesAS35141 A1 Bulgaria EAD111,360 IPv4 addressesAS12716 A1 Bulgaria EAD40,704 IPv4 addresses

Largest networks in Bulgaria

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