AS203964
4Tel Telekomunikacije d.o.o.
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Isp allocation +5
- Trust score 70 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Network profile
Source: PeeringDB →Present at 1 internet exchange: CIX
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS203964 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 82.22.209.0/24 | 20,452 | 2026-09-01 02:22:44 |
| 82.29.224.0/24 | 20,428 | 2026-09-01 02:22:44 |
| 82.29.212.0/24 | 20,388 | 2026-09-01 02:22:44 |
| 82.21.221.0/24 | 20,387 | 2026-09-01 02:22:44 |
| 82.24.217.0/24 | 20,375 | 2026-09-01 02:22:44 |
| 82.29.222.0/24 | 20,355 | 2026-09-01 02:22:44 |
| 82.27.219.0/24 | 20,354 | 2026-09-01 02:22:44 |
| 82.23.211.0/24 | 20,347 | 2026-09-01 02:22:44 |
| 82.24.232.0/24 | 20,345 | 2026-09-01 02:22:44 |
| 82.25.226.0/24 | 20,335 | 2026-09-01 02:22:44 |
| 82.26.213.0/24 | 20,334 | 2026-09-01 02:22:44 |
| 82.29.219.0/24 | 20,331 | 2026-09-01 02:22:44 |
| 82.21.209.0/24 | 20,331 | 2026-09-01 02:22:44 |
| 82.22.226.0/24 | 20,327 | 2026-09-01 02:22:44 |
| 82.25.231.0/24 | 20,320 | 2026-09-01 02:22:44 |
| 82.23.221.0/24 | 20,293 | 2026-09-01 02:22:44 |
| 80.253.164.0/22 | 15,332 | 2026-09-01 02:22:44 |
| 185.168.42.0/23 | 14,757 | 2026-09-01 02:21:39 |
| 185.150.232.0/23 | 14,729 | 2026-09-01 02:21:39 |
| 185.168.40.0/22 | 14,713 | 2026-09-01 02:21:39 |
| 185.150.234.0/23 | 14,706 | 2026-09-01 02:21:39 |
| 185.168.40.0/23 | 14,699 | 2026-09-01 02:21:39 |
| 185.150.232.0/22 | 14,692 | 2026-09-01 02:21:39 |
| 213.190.25.0/24 | 13,337 | 2026-08-31 23:41:13 |
| 213.190.26.0/23 | 13,309 | 2026-08-31 23:41:13 |
| 213.190.26.0/24 | 13,305 | 2026-08-31 23:41:13 |
| 213.190.27.0/24 | 13,300 | 2026-08-31 23:41:13 |
| 45.39.40.0/24 | 10,901 | 2026-09-01 02:22:44 |
| 142.252.204.0/23 | 8,017 | 2026-09-01 02:22:44 |
| 104.252.70.0/24 | 7,982 | 2026-09-01 02:22:44 |
Frequently Asked Questions
What is AS203964?
AS203964 is an Autonomous System Number assigned to 4Tel Telekomunikacije d.o.o.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS203964 announce?
AS203964 announces 9.0K IPv4 addresses distributed across 24 routed CIDR prefixes. The network is registered in Croatia.
Who operates AS203964?
AS203964 is operated by 4Tel Telekomunikacije d.o.o.. The organization is based in Croatia. You can view all IP ranges and related ASNs on the organization page.
What country is AS203964 registered in?
AS203964 is registered in Croatia. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
