Network report

Who holds an IP address, prefix or AS number, how it is routed (origin AS, RPKI, IRR), its reverse DNS, blocklist listings and PeeringDB record, with what to fix first.

AS5391 · 1 second ago

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS5391"

JSON Docs

Warning: AS5391 (T-HT) announces 47 IPv4 and 2 IPv6 prefixes. 2 warnings

AS page	AS5391
Holder	T-HT Hrvatski Telekom d.d.
Allocation	RIPE NCC, Croatia (HR), allocated 1995-08-04
Prefixes (IPv4 / IPv6)	47 / 2
RPKI valid	100% (49 / 49)
Upstreams and peers	14
Peering policy	Restrictive

What to fix

Warning
6 of 49 announced prefixes have no IRR route object: 87.252.152.0/22, 87.252.150.0/24, 87.252.128.0/20, 87.252.148.0/23, 194.152.198.0/24 (+1).

Many networks build their prefix filters from IRR data; without route objects some of them drop the routes.

Fix: Create route (IPv4) and route6 (IPv6) objects with origin AS5391 in your RIR’s IRR database (or RADB).
```
route: 87.252.152.0/22
origin: AS5391

route: 87.252.150.0/24
origin: AS5391

route: 87.252.128.0/20
origin: AS5391
```
Open in ASN & BGP prefix lookup
Warning

No public NOC, policy or technical contact.

Other networks use these addresses to set up peering and to reach you during an incident.

Fix: Add a role contact (for example noc@ or peering@ an address you monitor) with visibility Public.

Open in PeeringDB lookup

Checks

Routing and RPKI 6 of 49 announced prefixes have no IRR route object: 87.252.152.0/22, 87.252.150.0/24, 87.252.128.0/20, 87.252.148.0/23, 194.152.198.0/24 (+1).

Pass: AS5391 announces 47 IPv4 and 2 IPv6 prefixes.
Pass: All 49 announced prefixes are RPKI valid.
Warning: 6 of 49 announced prefixes have no IRR route object: 87.252.152.0/22, 87.252.150.0/24, 87.252.128.0/20, 87.252.148.0/23, 194.152.198.0/24 (+1).
Info: 14 upstreams and peers, 50 downstream networks seen.

Holder	T-HT Hrvatski Telekom d.d.
IPv4 prefixes	47
IPv6 prefixes	2
RPKI	49 valid
Without IRR route object	6
Downstream networks	50

Upstreams and peers seen to the left 14

AS6939 Hurricane Electric AS9002 RETN AS174 Cogent Communications, Inc. AS1299 Arelion (Twelve99) AS3356 Lumen AS3356 AS3320 Deutsche Telekom AS6762 Telecom Italia Sparkle AS34362 Terrakom d.o.o. AS205714 Telemach Croatia AS9009 M247 Global AS13046 ISKON INTERNET AS33891 Core-Backbone

Announced prefixes 49

31.216.192.0/19 31.217.0.0/17 31.217.0.0/19 31.217.32.0/19 31.217.64.0/19 31.217.96.0/19 46.188.128.0/17 46.188.128.0/19 46.188.160.0/19 46.188.192.0/20 46.188.208.0/21 46.188.224.0/19 78.0.0.0/16 78.1.0.0/16 78.2.0.0/16 78.3.0.0/16 83.131.0.0/16 83.131.0.0/18 83.131.8.0/24 87.252.128.0/19 87.252.128.0/20 87.252.144.0/22 87.252.148.0/23 87.252.150.0/24 87.252.152.0/22 89.172.0.0/16 93.136.0.0/16 93.137.0.0/16 93.137.128.0/18 93.138.0.0/16 93.139.0.0/16 93.140.0.0/16 93.141.0.0/16 93.142.0.0/16 93.143.0.0/16 93.159.64.0/19 178.160.0.0/17 178.160.0.0/18 188.125.0.0/20 194.152.192.0/18 194.152.198.0/24 195.29.0.0/16 195.29.0.0/18 195.29.64.0/18 195.29.128.0/18 195.29.192.0/18 213.202.71.0/24 2a00:c30::/29 2a00:c30::/32

Source: RIPEstat (RIPE NCC RIS, Routinator, IRR); AS names: Team Cymru

Open in ASN & BGP prefix lookup

Registration Found at rdap.db.ripe.net.

Pass: Found at rdap.db.ripe.net.

Name	T-HT
Handle	AS5391
Range	AS5391
Status	active
Registered	2002-05-10T10:42:46Z
Last changed	2026-09-03T18:25:15Z
Abuse contact	abuse@t.ht.hr

Allocation

Registry (RIR)	RIPE NCC
Country	Croatia (HR)
Delegated on	1995-08-04
Status	Allocated
Delegated range	AS5391

Source: RIR delegation data, updated daily. The country is where the range was registered, not necessarily where it is used.

Contacts

Role	Name	Email
registrant	HPT-MNT
registrant	Hrvatski Telekom d.d.
registrant	RIPE-NCC-END-MNT
abuse	T-HT Contact	abuse@t.ht.hr

Source: https://rdap.db.ripe.net/autnum/5391. Registration data from rdap.db.ripe.net, shown under its terms of use (terms): not for marketing or bulk collection. Personal contacts in this registry are not shown.

Open in WHOIS / RDAP lookup

PeeringDB No public NOC, policy or technical contact.

Pass: AS5391 is in PeeringDB as Croatian Telecom.
Info: Peering policy: Restrictive.
Info: Present at 1 internet exchanges with 1 ports (100G in total).
Warning: No public NOC, policy or technical contact.

Network	Croatian Telecom (Hrvatski Telekom)
AS number	AS5391
Type	Cable/DSL/ISP, Regional
Website	http://www.t.ht.hr
IRR as-set	RIPE::AS-HRHINET
Prefixes (IPv4 / IPv6)	2000 / 0
Traffic	Heavy Inbound
Peering policy	Restrictive
Locations	Not Required
Ratio required	No
Contracts	Not Required
Last updated	2025-04-09

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup