AS42157 A1BG A1 Bulgaria EAD

A1BG A1 Bulgaria EAD · registered in Bulgaria

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in Bulgaria#341largest network in BG by IPv4 space, of 669 · 0.01% of BG

Rank worldwide#51,553of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryBulgaria675 ASNs registered there

Open AS42157 in ASN lookup Look up an IP in this network (151.251.64.1) All networks in Bulgaria

IPv4 prefixes

All 1 prefix, in address order.

151.251.64.0/23

Other ASNs named A1BG A1 Bulgaria EAD

1 other network uses the same organisation name; together with AS42157 they announce 218,368 IPv4 addresses.

ASNNameIPv4 addresses

AS8717A1BG A1 Bulgaria EAD BG217,856

Similar-sized networks in Bulgaria

ASNNameIPv4 addresses

AS41730#338 DAZZLEWORK-AS Dazzlework Ltd.512

AS41799#339 POSTBANK-AS Eurobank Bulgaria AD512

AS41901#340 TELELINK-AS TELELINK BUSINESS SERVICES EAD512

AS42267#342 VMPLUS Vision Media Plus, EOOD512

AS42942#343 Telecomp-AS Telecomp Ltd.512

AS43732#344 TBI-AS TBI BANK EAD512

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources