Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS42157

Announcement observedRIPE NCC

A1 Bulgaria EAD · A1BG

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/12/2026, 00:00:00Snapshot expired

View network topology RDAP registration

ASN: AS42157
Registration country: Bulgaria
Name: A1 Bulgaria EAD
Abbreviation: A1BG
Registration date: 12/29/2006, 10:17:37
Status: Announcement observed
RIR: RIPE NCC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
151.251.64.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/19/2026, 08:00:00	10/30/2026, 08:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: A1 Bulgaria EAD
RIR: RIPE NCC
Registration country: Bulgaria
Registration date: 12/29/2006, 10:17:37
Abuse contact: RIPE.Abuse@a1.bg

Snapshot trend

10/3/2026, 13:53:551 v40 v61 Upstream · 0 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · iana-rdap-asn-bootstrap · rir-rdap-asn · cha-la-bgp-observations