Data as of Nov 8, 2026
192.51.208.0/20
12 residential-proxy exits · 30 daysThe University of Tokyo · space held by imported inetnum object for JNIC
Residential-proxy exits
Proxy exits
12
0.29% of its addresses · 30 days
Spread
1 of 16
/24s with at least one exit
Providers
31
selling exits here
Oct 9, 2026 – Nov 7, 2026
Exits seen per day
687 observations
Proxy providers listing exits
- BirdProxies
- BottingTools
- Byteful
- Datarama
- EZProxies
- EnigmaProxy
- Evomi
- FastProxy
- FloppyData
- GSocks
- Geonix
- Geonode
- GonzoProxy
- Infatica
- InfiniteProxies
- LemonBright
- LemonLabs
- MangoProxy
- NodeProxy
- NovaProxy
- Proxiware
- Proxy-Seller
- ProxyEmpire
- ProxyGeo
- Proxyma
- RainProxy
- Shifter
- Thordata
- ThunderProxy
- VantageProxies
- VitalExclusive
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 192. | 11,776 | JAPAN-INET-BLOCK4 | imported inetnum object for JNIC | ALLOCATED PORTABLE | — | hostmaster@ |
| └ 192.51.208.0/20 | 4,096 | UTNET | University of Tokyo | ALLOCATED PORTABLE | — | hostmaster@ |
Network & registry
Registry
Holder
- Organization
- imported inetnum object for JNIC
- Range
- 192.
51. 194. 0 - 192. 51. 239. 255 - Registration type
- ALLOCATED PORTABLE
Origin network
AS2501
JP
- Name
- The University of Tokyo
- Type
- Education
- Registered
- Apr 5, 2002
- Domain
- u-tokyo.ac.jp
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS2501 | RADB | JERNET | MAINT-AS2500 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 192.
51. 208. 0/ 20 - Netname
- UTSNET-CIDR-BLK-JP
- Registrant
- University of Tokyo
- Registrant country
- JP
- Organization
- University of Tokyo
- Org country
- JP
- Created
- Not stated by the registry
- Updated
- Oct 20, 2011
- RIR
- APNIC
- Country
- JP
- Delegated
- Aug 6, 1993
- Status
- assigned