$ query “AS204457” --type=asn → 1 result(s)

AS204457 · ATLANTIS-CENTRAL

Atlantis Telekomunikasyon Bilisim Hizmetleri San. ve Tic. Ltd. Sti.

AS204457 is run by Atlantis Telekomunikasyon Bilisim Hizmetleri San. ve Tic.… and is a mid-size transit provider, registered in Türkiye since 2018. The system announces 5 120 IPv4 addresses. Most of its address space is geolocated to Türkiye, with additional presence in Australia. This AS has recently updated its prefix announcements. No IPv6 support — it's 2026, just saying.

  • Top 5% — Top 5% of all autonomous systems by reach and degree

Basic Information

Country
🇹🇷 Türkiye
Category
Internet Service Provider
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
March 07, 2018
Last Changed
March 19, 2026
Last Seen
June 15, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
20 / 14
IPv6 Prefixes (raw / aggregated)
0 / 0
IPv4 Addresses
5 120
Largest IPv4 Prefix
/22 (1 024 addresses)
Geolocated Countries
🇹🇷 Türkiye (6 656 IPs), 🇦🇺 Australia (1 024 IPs)
Prefix Changed
June 16, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
5 upstreams providing transit
Peers
136 networks exchanging traffic without transit
Downstream Customers
8 downstreams buying transit
Unclassified
5 unclassified BGP neighbors
Degree
154 unique BGP neighbors
Reach
59 networks in customer cone

Upstream Providers (5)

Prefix Lists

IPv4 Prefixes (20 total)

  • 185.248.12.0/22 (1 024 addresses (/22 prefix))
  • 131.222.230.0/23 (512 addresses (/23 prefix))
  • 45.156.30.0/23 (512 addresses (/23 prefix))
  • 131.222.232.0/23 (512 addresses (/23 prefix))
  • 87.121.22.0/24 (256 addresses (/24 prefix))
  • 95.141.248.0/24 (256 addresses (/24 prefix))
  • 94.103.124.0/24 (256 addresses (/24 prefix))
  • 45.94.5.0/24 (256 addresses (/24 prefix))
  • 45.94.7.0/24 (256 addresses (/24 prefix))
  • 188.125.163.0/24 (256 addresses (/24 prefix))
  • 188.125.168.0/24 (256 addresses (/24 prefix))
  • 194.4.153.0/24 (256 addresses (/24 prefix))
  • 195.170.186.0/24 (256 addresses (/24 prefix))
  • 213.134.12.0/24 (256 addresses (/24 prefix))