AS28821
University of Doha for Science and Technology
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
- Academic allocation +6
- Trust score 71 / 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 |
|---|---|---|---|---|---|---|
| 185.104.56.0/22 | 1.0K |
0.0%
|
University of Doha for Science and Technology | QA | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS28821 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 |
|---|---|---|
| 185.104.58.0/24 | 20,375 | 2026-07-24 01:49:03 |
| 185.104.59.0/24 | 20,316 | 2026-07-24 01:49:03 |
| 185.104.56.0/24 | 12,884 | 2026-07-24 01:46:03 |
| 185.104.57.0/24 | 12,869 | 2026-07-24 01:46:03 |
Frequently Asked Questions
What is AS28821?
AS28821 is an Autonomous System Number assigned to University of Doha for Science and Technology. 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 AS28821 announce?
AS28821 announces 1.0K IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in Qatar.
Who operates AS28821?
AS28821 is operated by University of Doha for Science and Technology. The organization is based in Qatar. You can view all IP ranges and related ASNs on the organization page.
What country is AS28821 registered in?
AS28821 is registered in Qatar. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
