$ query “AS8717” --type=asn → 1 result(s)

AS8717 · A1BG

A1 Bulgaria EAD

AS8717 is operated by A1 Bulgaria EAD and serves as a major transit provider, based in Bulgaria since 2002. The system announces a solid 976 384 IPv4 addresses, including a /16, and supports IPv6. Most of its address space is geolocated to Bulgaria.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #4 in Bulgaria — Top 10 by reach within country

Basic Information

Country
🇧🇬 Bulgaria
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
August 22, 2002
Last Changed
March 04, 2026
Last Seen
April 29, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
104 / 54
IPv6 Prefixes (raw / aggregated)
4 / 2
IPv4 Addresses
976 384
Largest IPv4 Prefix
/16 (65 536 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇧🇬 Bulgaria (1 952 768 IPs)
Prefix Changed
April 02, 2026

Reputation

Reputation
Good — 8 flagged IPs out of 976 384 total (0.00%)
Open Proxies
5 known open proxies in this network

Connectivity Summary

Upstream Providers
8 upstreams providing transit
Peers
101 networks exchanging traffic without transit
Downstream Customers
177 downstreams buying transit
Unclassified
9 unclassified BGP neighbors
Degree
295 unique BGP neighbors
Reach
36 883 networks in customer cone

Upstream Providers (8)

  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS6461 — ZAYO-6461 (Tier-1 transit)
  • AS9002 — RETN-AS
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS3549 — LVLT-3549
  • AS8447 — A1TELEKOM-AT
  • AS59900 — BALKAN-INTERNET-EXCHANGE (Tier-1 transit)
  • AS8860 — DELTA-BG-AS

Prefix Lists

IPv4 Prefixes (104 total)

  • 151.251.0.0/16 (65 536 addresses (/16 prefix))
  • 130.204.0.0/16 (65 536 addresses (/16 prefix))
  • 78.90.0.0/16 (65 536 addresses (/16 prefix))
  • 92.247.0.0/16 (65 536 addresses (/16 prefix))
  • 78.83.0.0/16 (65 536 addresses (/16 prefix))
  • 89.215.0.0/16 (65 536 addresses (/16 prefix))
  • 87.227.128.0/17 (32 768 addresses (/17 prefix))
  • 77.70.0.0/17 (32 768 addresses (/17 prefix))
  • 87.97.128.0/17 (32 768 addresses (/17 prefix))
  • 88.203.128.0/17 (32 768 addresses (/17 prefix))
  • 37.63.0.0/17 (32 768 addresses (/17 prefix))
  • 85.130.0.0/17 (32 768 addresses (/17 prefix))
  • 5.53.128.0/17 (32 768 addresses (/17 prefix))
  • 95.111.0.0/17 (32 768 addresses (/17 prefix))
  • 176.12.0.0/18 (16 384 addresses (/18 prefix))
  • 84.252.0.0/18 (16 384 addresses (/18 prefix))
  • 84.242.128.0/18 (16 384 addresses (/18 prefix))
  • 89.253.128.0/18 (16 384 addresses (/18 prefix))
  • 82.103.64.0/18 (16 384 addresses (/18 prefix))
  • 85.196.128.0/18 (16 384 addresses (/18 prefix))
  • 213.226.0.0/18 (16 384 addresses (/18 prefix))
  • 46.238.0.0/18 (16 384 addresses (/18 prefix))
  • 213.240.192.0/18 (16 384 addresses (/18 prefix))
  • 82.147.128.0/19 (8 192 addresses (/19 prefix))
  • 213.169.32.0/19 (8 192 addresses (/19 prefix))
  • 62.204.128.0/19 (8 192 addresses (/19 prefix))
  • 85.118.64.0/19 (8 192 addresses (/19 prefix))
  • 85.91.128.0/19 (8 192 addresses (/19 prefix))
  • 213.222.32.0/19 (8 192 addresses (/19 prefix))
  • 213.191.160.0/19 (8 192 addresses (/19 prefix))
  • 89.190.192.0/19 (8 192 addresses (/19 prefix))
  • 77.236.160.0/19 (8 192 addresses (/19 prefix))
  • 62.221.128.0/19 (8 192 addresses (/19 prefix))
  • 212.104.96.0/19 (8 192 addresses (/19 prefix))
  • 212.95.160.0/19 (8 192 addresses (/19 prefix))
  • 195.24.32.0/19 (8 192 addresses (/19 prefix))
  • 195.34.96.0/19 (8 192 addresses (/19 prefix))
  • 212.91.160.0/19 (8 192 addresses (/19 prefix))
  • 212.50.0.0/19 (8 192 addresses (/19 prefix))
  • 212.36.0.0/19 (8 192 addresses (/19 prefix))
  • 95.140.208.0/20 (4 096 addresses (/20 prefix))
  • 217.79.32.0/20 (4 096 addresses (/20 prefix))
  • 217.18.240.0/20 (4 096 addresses (/20 prefix))
  • 217.10.240.0/20 (4 096 addresses (/20 prefix))
  • 217.9.224.0/20 (4 096 addresses (/20 prefix))
  • 80.253.48.0/20 (4 096 addresses (/20 prefix))
  • 46.232.152.0/21 (2 048 addresses (/21 prefix))
  • 83.97.24.0/21 (2 048 addresses (/21 prefix))
  • 89.186.200.0/21 (2 048 addresses (/21 prefix))
  • 195.149.248.0/21 (2 048 addresses (/21 prefix))
  • and 4 more

IPv6 Prefixes (4 total)

  • 2a00:4800::/29
  • 2a01:288::/32