Data as of Nov 3, 2026
Autonomous system
AS28949
Technical University of Sofia
Announces 4,096 addresses in 17 prefixes. None of it is anonymizer space.
Type
Education
BG
Proxy activity, 30 days
36 exits
Announced prefixes
| Prefix | Type | Proxy exits | RPKI |
|---|---|---|---|
| 81.161.240.0/20 since May 2025 | Business | 36 1 always on | |
| 81.161.240.0/24 since Aug 2016 | Business | 5 | |
| 81.161.241.0/24 since Aug 2016 | Business | 1 | |
| 81.161.242.0/24 since Aug 2016 | Business | 2 | |
| 81.161.243.0/24 since Aug 2016 | Business | 2 | |
| 81.161.244.0/24 since Aug 2016 | Business | 4 | |
| 81.161.245.0/24 since Aug 2016 | Business | 2 | |
| 81.161.246.0/24 since Aug 2016 | Business | 3 | |
| 81.161.247.0/24 since Aug 2016 | Business | 6 | |
| 81.161.248.0/24 since Aug 2016 | Business | 4 | |
| 81.161.249.0/24 since Aug 2016 | Business | 3 | |
| 81.161.250.0/24 since Aug 2016 | Business | 1 | |
| 81.161.251.0/24 since Aug 2016 | Business | 1 | |
| 81.161.252.0/24 since Aug 2016 | Business | ||
| 81.161.253.0/24 since Aug 2016 | Business | ||
| 81.161.254.0/24 since Aug 2016 | Business | 2 1 always on | |
| 81.161.255.0/24 since Jun 2025 | Business |
Residential-proxy exposure
Always-on exits
1
2.8% of its exits
Spread
13
/24s with at least one exit
Providers
45
selling exits here
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 81.161.254.0/24 | 1 | 2 | |
| 81.161.247.0/24 | 0 | 6 | |
| 81.161.240.0/24 | 0 | 5 | |
| 81.161.248.0/24 | 0 | 4 | |
| 81.161.244.0/24 | 0 | 4 | |
| 81.161.249.0/24 | 0 | 3 | |
| 81.161.246.0/24 | 0 | 3 | |
| 81.161.245.0/24 | 0 | 2 | |
| 81.161.243.0/24 | 0 | 2 | |
| 81.161.242.0/24 | 0 | 2 | |
| 81.161.250.0/24 | 0 | 1 | |
| 81.161.251.0/24 | 0 | 1 | |
| 81.161.241.0/24 | 0 | 1 |
Proxy providers listing exits
- 2Captcha
- BartProxies
- BestProxy
- BirdProxies
- BottingTools
- ByteProxies
- Byteful
- CliProxy
- EnigmaProxy
- FastProxy
- FlashProxy
- FlexyProxies
- FloppyData
- GSocks
- Geonix
- GonzoProxy
- IPFly
- IPOasis
- IPPeak
- Infatica
- LemonBright
- LemonLabs
- LightningProxies
- MangoProxy
- NSocks
- NodeMaven
- NodeProxy
- NovaProxy
- Oxylabs
- Proxiware
- Proxy-Seller
- ProxyEmpire
- ProxyHat
- Proxying
- Proxyma
- PuraRoute
- RainProxy
- Shifter
- Smartproxy
- Thordata
- VantageProxies
- VibeProxies
- VitalData
- VitalExclusive
- VitalProxy
Proxy activity
Oct 4, 2026 – Nov 2, 2026
AS28949, day by day
5.8K observations
Network & history
Profile
- Registered
- Apr 16, 2003
- Domain
- tu-sofia.bg
- Industry
- Colleges, Universities, and Professional Schools
Routing patterns
How its announcements have moved
Arrivals