AS37501
University of the Free State
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 v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
AS37501 — global IP footprint
Cities where AS37501 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 196.254.0.0/15 | 131.1K |
0.0%
|
UOFS | ZA | Free State | Phuthaditjhaba |
| 146.182.0.0/16 | 65.5K |
7.3%
|
UOFS | ZA | Free State | Bloemfontein |
| 196.21.180.0/22 | 1.0K |
11.8%
|
UOFS | ZA | — | — |
| 196.21.158.0/23 | 512 |
0.0%
|
UOFS | ZA | — | — |
| 196.21.40.0/24 | 256 |
0.4%
|
UOFS | ZA | — | — |
| 196.21.184.0/24 | 256 |
4.3%
|
UOFS | ZA | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS37501 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 |
|---|---|---|
| 196.21.184.0/24 | 6,235 | 2026-07-23 15:08:56 |
| 146.182.0.0/16 | 6,213 | 2026-07-23 15:08:56 |
| 196.21.180.0/23 | 6,162 | 2026-07-23 15:08:56 |
| 196.21.182.0/23 | 6,149 | 2026-07-23 15:08:56 |
| 196.21.159.0/24 | 6,122 | 2026-07-23 15:08:56 |
| 196.21.158.0/24 | 6,071 | 2026-07-23 15:08:56 |
| 196.255.0.0/16 | 5,709 | 2026-07-23 15:08:56 |
| 146.182.128.0/17 | 5,552 | 2026-07-23 15:08:56 |
| 146.182.0.0/17 | 5,548 | 2026-07-23 15:08:56 |
| 196.254.0.0/16 | 5,544 | 2026-07-23 15:08:56 |
| 196.21.40.0/24 | 5,524 | 2026-07-23 15:13:17 |
Frequently Asked Questions
What is AS37501?
AS37501 is an Autonomous System Number assigned to University of the Free State. 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 AS37501 announce?
AS37501 announces 198.7K IPv4 addresses distributed across 6 routed CIDR prefixes. The network is registered in South Africa.
Who operates AS37501?
AS37501 is operated by University of the Free State. The organization is based in South Africa. You can view all IP ranges and related ASNs on the organization page.
What country is AS37501 registered in?
AS37501 is registered in South Africa. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
