AS5391 — T-HT Croatian Telecom Inc.

Network type: residential

AS5391 announces 42 IPv4 prefixes covering 1,124,352 addresses and 1 IPv6 prefixes.

About this network

T-HT is Hrvatski Telekom d.d., Croatia's incumbent telecommunications operator, headquartered in Zagreb and majority owned by Deutsche Telekom. This is its main network.

What it's used for

• Fixed broadband, mobile data, television, and voice for customers across Croatia, plus the corporate and business services the incumbent sells alongside them.

Notable

• A large eyeball network by Croatian standards, holding over a million IPv4 addresses. Most of them terminate on subscriber lines and phones rather than on servers.
• As the former state telecom monopoly, it inherited the country's copper and much of its core infrastructure, and it remains the network most Croatian internet users sit behind.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 31.216.192.0/19
• 31.217.0.0/17
• 46.188.128.0/17
• 78.0.0.0/14
• 83.131.0.0/16
• 87.252.128.0/19
• 89.172.0.0/16
• 93.136.0.0/13
• 93.159.64.0/19
• 178.160.0.0/17
• 188.125.0.0/21
• 188.125.8.0/22
• 188.125.12.0/23
• 188.125.14.0/24
• 194.152.192.0/20
• 194.152.208.0/22
• 194.152.212.0/24
• 194.152.214.0/24
• 194.152.216.0/21
• 194.152.224.0/21
• 194.152.234.0/23
• 194.152.236.0/23
• 194.152.239.0/24
• 194.152.240.0/22
• 194.152.244.0/23
• 194.152.247.0/24
• 194.152.248.0/21
• 195.29.0.0/18
• 195.29.64.0/20
• 195.29.80.0/21
• 195.29.88.0/23
• 195.29.90.0/24
• 195.29.92.0/22
• 195.29.96.0/19
• 195.29.128.0/21
• 195.29.136.0/23
• 195.29.138.0/24
• 195.29.140.0/22
• 195.29.144.0/20
• 195.29.160.0/19
• 195.29.192.0/18
• 213.202.71.0/24
• 2a00:c30::/29

Upstream networks

• AS3320 Deutsche Telekom AG
• AS1299 Arelion Sweden AB
• AS174 Cogent Communications, LLC
• AS9002 RETN Limited
• AS6939 Hurricane Electric LLC
• AS3356 Level 3 Parent, LLC
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS33891 Core-Backbone GmbH

Downstream networks

• AS13046 Hrvatski Telekom d.d.
• AS9146 BH Telecom d.d. Sarajevo
• AS20875 JP HT d.d. Mostar
• AS25144 "Telekomunikacije Republike Srpske" akcionarsko drustvo Banja Luka
• AS8585 Crnogorski Telekom a.d.Podgorica
• AS203463 ASEE SOLUTIONS d.o.o
• AS35567 DASTO semtel d.o.o.
• AS9119 SOFTNET d.o.o.
• AS214427 Netvis d.o.o.
• AS59866 AKD d.o.o.
• AS44377 MAGIC NET D.O.O.
• AS25365 Tomsoft d.o.o.
• AS15719 CENTAR ZA VOZILA HRVATSKE D.D.
• AS200990 Hrvatski operator prijenosnog sustava d.d.
• AS197823 Ministarstvo zdravstva
• AS50410 Hrvatske autoceste d.o.o.
• AS30841 Istarska kreditna banka Umag d.d.
• AS215045 UPMC GLOBAL OPERATIONS CENTER LIMITED
• AS57868 Lucka uprava Ploce
• AS211191 Gigabit d.o.o.
• AS21323 Erste&Steiermarkische Bank d.d.
• AS35128 Hrvatska Postanska Banka d.d.
• AS209434 Ericsson Nikola Tesla d.d.
• AS201987 EOLO Hrvatska d.d.
• AS35416 Croatia Airlines d.d.

Adjacent networks

• AS13046 Hrvatski Telekom d.d.
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS3356 Level 3 Parent, LLC
• AS9146 BH Telecom d.d. Sarajevo
• AS3320 Deutsche Telekom AG
• AS20875 JP HT d.d. Mostar
• AS25144 "Telekomunikacije Republike Srpske" akcionarsko drustvo Banja Luka
• AS8585 Crnogorski Telekom a.d.Podgorica
• AS1299 Arelion Sweden AB
• AS9002 RETN Limited
• AS6762 TELECOM ITALIA SPARKLE S.p.A.
• AS203463 ASEE SOLUTIONS d.o.o
• AS35567 DASTO semtel d.o.o.
• AS44377 MAGIC NET D.O.O.
• AS9119 SOFTNET d.o.o.
• AS214427 Netvis d.o.o.
• AS59866 AKD d.o.o.
• AS61094 CRATIS d.o.o.
• AS25365 Tomsoft d.o.o.
• AS15719 CENTAR ZA VOZILA HRVATSKE D.D.
• AS200990 Hrvatski operator prijenosnog sustava d.d.
• AS205714 Telemach Hrvatska d.o.o.
• AS34362 Terrakom d.o.o.
• AS35128 Hrvatska Postanska Banka d.d.

Routing security

• RPKI: 49 valid, 0 invalid and 0 not-found announcements; 46 ROAs.
• ASPA: none published.
• IRR: 88% of announcements registered; 113 route objects.
• Listed in as-sets: AS-HRHINET, AS-HURRICANE, AS-HURRICANEV6, AS-IINET, AS-RETN-ACTUAL-V4, AS-RETN-ACTUAL-V6, AS-SEABONE-V6, AS-SEABONECUSTEU, AS-TRANSROUTE-SPEC, AS199746:AS-BLACKLIST, AS204464:AS-BLACKLIST, AS51202:AS-ALL, AS5413:AS-ROUTE-SERVER-DE-CIX, AS6695:AS-DECIX-FRA-CONNECTED, AS6695:AS-DECIX-FRA-RS, AS6695:AS-DECIX-FRA-RS-V6.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• Croatian Internet Exchange — Zagreb, Croatia