asn.dev

Autonomous system

AS203964 X4TEL-AS

Unclassified RIPE

IPv4 addresses 8.96K 24 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly HR
Exchanges 1 recorded by PCH
Upstreams 4 2 downstream
Flagged prefixes 0 none

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
Croatian Internet ExchangeZagreb, Croatia185.1.87.134

Transit providers

4 upstream, 2 downstream and 10 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6939Hurricane Electric LLC1,136
AS174Cogent Communications, LLC544
AS9002RETN Limited330
AS1299Arelion Sweden AB12

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 24 prefixes · 8.96K addresses IPv6 2 prefixes

CountryNamePrefixes
HRCroatia26

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS203964
Registry name
x4TEL-AS
Registrant
hr-4tel-1-mnt
Abuse contact
abuse-ripe@4tel.com.hr
Registered
2016-05-06
Last changed
2024-11-20
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
4Tel Telekomunikacije
Also known as
4TEL
Scope
Europe
Traffic ratio
Mostly Inbound
Peering policy
Open
IRR as-set
AS-4TEL
Present at
1 exchanges
Website
http://www.4tel.hr

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
59% valid · 19 valid, 13 with no ROA
ROAs
19 authorising AS203964
ASPA
no ASPA record
IRR
100% registered · 32 of 32 announcements
Route objects
57 naming AS203964

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,783 prefixes, as published 2026-10-17. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check