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 v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About Unisys
Unisys Corporation is a technology company founded in 1986 and headquartered in Blue Bell, Pennsylvania. The company provides cloud, AI, digital workplace, logistics, and enterprise computing services.
⚠ 1 MOAS prefix — multiple origin ASNs detected
All MOAS anomalies →A previously stable prefix originated by AS2021 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) |
|---|---|---|
| 129.220.23.0/24 | AS2021, AS6071 | 2026-07-22 21:38:23 |
Network profile
Source: PeeringDB →Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 129.220.22.0/23 | 512 |
0.4%
|
Unisys Corporation | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS2021 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 |
|---|---|---|
| 129.220.23.0/24 | 104,769 | 2026-07-24 15:46:51 |
| 129.220.22.0/24 | 23,214 | 2026-07-24 16:13:02 |
Frequently Asked Questions
What is AS2021?
AS2021 is an Autonomous System Number assigned to Unisys Corporation. 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 AS2021 announce?
AS2021 announces 512 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.
Who operates AS2021?
AS2021 is operated by Unisys Corporation. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS2021 registered in?
AS2021 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
