$ query “AS5391” --type=asn → 1 result(s)

AS5391 · T-HT

Hrvatski Telekom d.d.

AS5391 is operated by Hrvatski Telekom d.d. and serves as a mid-size transit provider, registered in Croatia since 2002. The system announces an impressive 1.1 million IPv4 addresses, including a /13, and supports IPv6. The bulk of its IP address space is in Croatia.

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

Basic Information

Country
🇭🇷 Croatia
Category
Internet Service Provider
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
May 10, 2002
Last Changed
April 01, 2026
Last Seen
June 22, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
47 / 14
IPv6 Prefixes (raw / aggregated)
2 / 1
IPv4 Addresses
1 126 656
Largest IPv4 Prefix
/13 (524 288 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇭🇷 Croatia (2 248 960 IPs)
Prefix Changed
June 11, 2026

Reputation

Reputation
Good — 3 flagged IPs out of 1 126 656 total (0.00%)

Connectivity Summary

Upstream Providers
7 upstreams providing transit
Peers
4 networks exchanging traffic without transit
Downstream Customers
49 downstreams buying transit
Degree
60 unique BGP neighbors
Reach
911 networks in customer cone

Upstream Providers (7)

  • AS6939 — HURRICANE
  • AS174 — COGENT (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS9002 — RETN-AS
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS3320 — DTAG (Tier-1 transit)
  • AS6762 — SEABONE-NET (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (47 total)

  • 93.136.0.0/13 (524 288 addresses (/13 prefix))
  • 78.0.0.0/14 (262 144 addresses (/14 prefix))
  • 89.172.0.0/16 (65 536 addresses (/16 prefix))
  • 83.131.0.0/16 (65 536 addresses (/16 prefix))
  • 195.29.0.0/16 (65 536 addresses (/16 prefix))
  • 46.188.128.0/17 (32 768 addresses (/17 prefix))
  • 31.217.0.0/17 (32 768 addresses (/17 prefix))
  • 178.160.0.0/17 (32 768 addresses (/17 prefix))
  • 194.152.192.0/18 (16 384 addresses (/18 prefix))
  • 87.252.128.0/19 (8 192 addresses (/19 prefix))
  • 31.216.192.0/19 (8 192 addresses (/19 prefix))
  • 93.159.64.0/19 (8 192 addresses (/19 prefix))
  • 188.125.0.0/20 (4 096 addresses (/20 prefix))
  • 213.202.71.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (2 total)

  • 2a00:c30::/29