AS21150
Atos Information Technology GmbH
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
- Trust score 65 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 129.185.160.0/19 | 8.2K |
0.3%
|
Atos Information Technology GmbH | FR | — | — |
| 155.45.160.0/19 | 8.2K |
3.1%
|
Atos Information Technology GmbH | DE | — | — |
| 217.115.64.0/20 | 4.1K |
7.4%
|
Atos Information Technology GmbH | DE | Bremen | Bremerhaven |
| 155.45.208.0/21 | 2.0K |
2.0%
|
Atos Information Technology GmbH | DE | — | — |
| 155.45.240.0/21 | 2.0K |
0.4%
|
Atos Information Technology GmbH | DE | — | — |
| 143.99.208.0/22 | 1.0K |
0.0%
|
Atos Information Technology GmbH | DE | — | — |
| 185.60.36.0/22 | 1.0K |
0.0%
|
Atos Information Technology GmbH | DE | — | — |
| 194.55.108.0/22 | 1.0K |
0.0%
|
Atos Information Technology GmbH | DE | — | — |
| 91.207.162.0/23 | 512 |
3.3%
|
Atos Information Technology GmbH | DE | — | — |
| 155.45.255.0/24 | 256 |
0.8%
|
Atos Information Technology GmbH | DE | — | — |
| 192.54.66.0/24 | 256 |
0.0%
|
Atos Information Technology GmbH | DE | — | — |
| 193.26.126.0/24 | 256 |
0.0%
|
Atos Information Technology GmbH | DE | — | — |
| 193.138.113.0/24 | 256 |
0.0%
|
Atos Information Technology GmbH | DE | — | — |
| 194.8.100.0/24 | 256 |
0.0%
|
Atos Information Technology GmbH | DE | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS21150 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 |
|---|---|---|
| 155.45.160.0/20 | 28,333 | 2026-09-09 02:21:20 |
| 155.45.240.0/21 | 28,171 | 2026-09-09 02:21:20 |
| 155.45.176.0/20 | 27,877 | 2026-09-09 02:21:20 |
| 155.45.255.0/24 | 27,762 | 2026-09-09 02:21:20 |
| 155.45.208.0/21 | 27,716 | 2026-09-09 02:21:20 |
| 194.8.100.0/24 | 13,843 | 2026-09-09 02:19:01 |
| 217.115.72.0/21 | 12,884 | 2026-09-09 02:29:24 |
| 185.60.36.0/22 | 12,740 | 2026-09-09 02:29:24 |
| 129.185.160.0/19 | 12,724 | 2026-09-09 02:29:24 |
| 91.207.162.0/23 | 12,722 | 2026-09-09 02:29:24 |
| 217.115.64.0/21 | 12,646 | 2026-09-09 02:29:24 |
| 193.138.113.0/24 | 12,607 | 2026-09-09 02:29:24 |
| 193.26.126.0/24 | 12,581 | 2026-09-09 02:29:24 |
| 194.55.108.0/22 | 12,223 | 2026-09-09 02:29:24 |
| 192.54.66.0/24 | 10,865 | 2026-09-09 02:17:59 |
| 194.8.100.0/28 | 19 | 2026-09-08 14:49:46 |
Frequently Asked Questions
What is AS21150?
AS21150 is an Autonomous System Number assigned to Atos Information Technology 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 AS21150 announce?
AS21150 announces 29.4K IPv4 addresses distributed across 14 routed CIDR prefixes. The network is registered in Germany.
Who operates AS21150?
AS21150 is operated by Atos Information Technology GmbH. The organization is based in Germany. You can view all IP ranges and related ASNs on the organization page.
What country is AS21150 registered in?
AS21150 is registered in Germany. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
