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
- Multiple-origin (MOAS) routing anomaly −12
- Trust score 53 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
⚠ 8 MOAS prefixes — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS1921 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.
| Prefix | Origin ASNs | Last detected (UTC) |
|---|---|---|
| 194.0.182.0/24 | AS1921, AS207021 | 2026-07-22 20:53:23 |
| 185.167.176.0/24 | AS1921, AS207021 | 2026-07-22 20:53:23 |
| 185.80.188.0/24 | AS1921, AS207021 | 2026-07-22 20:53:23 |
| 194.0.25.0/24 | AS1921, AS207021 | 2026-07-22 20:53:23 |
| 194.50.187.0/24 | AS1921, AS207021 | 2026-07-22 20:53:23 |
| 176.97.158.0/24 | AS1921, AS207021 | 2026-07-22 20:53:23 |
| 193.46.128.0/24 | AS1921, AS207021 | 2026-07-22 20:53:23 |
| 193.46.135.0/24 | AS1921, AS207021 | 2026-07-22 20:53:23 |
Network profile
Source: PeeringDB →Present at 9 internet exchanges: RIX, LINX LON1: Main, Rheintal IX: Peering-LAN, SwissIX: Peering, SIX SI, TREX Tampere: Unicast Peering, AAIX, GigaPIX - LAN 1: LAN1, LU-CIX
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 91.237.67.0/24 | 256 |
1.2%
|
ipcom GmbH | SE | — | — |
| 185.80.188.0/24 | 256 |
0.0%
|
ipcom GmbH | AT | — | — |
| 185.80.191.0/24 | 256 |
0.0%
|
ipcom GmbH | AT | — | — |
| 185.102.12.0/24 | 256 |
0.4%
|
ipcom GmbH | AT | — | — |
| 192.174.68.0/24 | 256 |
23.0%
|
ipcom GmbH | AT | — | — |
| 193.46.128.0/24 | 256 |
0.4%
|
ipcom GmbH | AT | — | — |
| 193.46.133.0/24 | 256 |
0.0%
|
ipcom GmbH | AT | — | — |
| 193.46.134.0/24 | 256 |
0.0%
|
ipcom GmbH | AT | — | — |
| 193.227.117.0/24 | 256 |
3.5%
|
ipcom GmbH | DE | — | — |
| 194.0.25.0/24 | 256 |
14.1%
|
ipcom GmbH | AT | — | — |
| 194.0.182.0/24 | 256 |
3.5%
|
ipcom GmbH | DE | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS1921 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 |
|---|---|---|
| 193.46.134.0/24 | 287,014 | 2026-07-22 20:59:58 |
| 194.0.182.0/24 | 233,343 | 2026-07-22 20:59:56 |
| 193.46.133.0/24 | 229,917 | 2026-07-22 20:59:58 |
| 185.80.191.0/24 | 186,937 | 2026-07-22 20:07:47 |
| 192.174.68.0/24 | 178,005 | 2026-07-22 20:58:43 |
| 193.227.117.0/24 | 177,010 | 2026-07-22 20:58:43 |
| 185.80.188.0/24 | 143,967 | 2026-07-22 20:58:43 |
| 193.46.128.0/24 | 124,297 | 2026-07-22 20:58:43 |
| 194.0.25.0/24 | 71,593 | 2026-07-22 20:58:43 |
| 91.237.67.0/24 | 17,054 | 2026-07-22 20:16:48 |
| 185.102.12.0/24 | 5,695 | 2026-07-22 20:24:25 |
| 193.46.135.0/24 | 3,976 | 2026-07-22 20:59:41 |
| 194.50.187.0/24 | 3,789 | 2026-07-22 20:59:51 |
| 176.97.158.0/24 | 2,935 | 2026-07-22 20:59:41 |
| 185.167.176.0/24 | 2,556 | 2026-07-22 20:59:51 |
Frequently Asked Questions
What is AS1921?
AS1921 is an Autonomous System Number assigned to ipcom GmbH. 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 AS1921 announce?
AS1921 announces 2.8K IPv4 addresses distributed across 11 routed CIDR prefixes. The network is registered in Austria.
Who operates AS1921?
AS1921 is operated by ipcom GmbH. The organization is based in Austria. You can view all IP ranges and related ASNs on the organization page.
What country is AS1921 registered in?
AS1921 is registered in Austria. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
