Data as of Nov 4, 2026
202.252.104.0/22
No anonymizer space · no proxy exits in 30 daysDokkyo University · space held by Japan Network Information Center
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 202.252.104.0/23 since Jul 2020 | AS131961 | Business | Japan Network Information Center | |
| 202.252.106.0/23 since Jul 2020 | AS131961 | Business | Japan Network Information Center |
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 |
|---|---|---|---|---|---|---|
| 202.240.0.0/12 | 1,048,576 | JPNIC-NET-JP | Japan Network Information Center | ALLOCATED PORTABLE | — | [email protected] |
Network & registry
IPv4 market
Holder
- Organization
- Japan Network Information Center
- Range
- 202.240.0.0/12
- Registration type
- ALLOCATED PORTABLE
Origin network
AS131961
JP
- Name
- Dokkyo University
- Type
- Education
- Registered
- Aug 4, 2011
- Domain
- dokkyo.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
- Jul 2020 · 6.3 yr
- Origin networks
- 2
- Last change of origin
- Jul 2020
Recorded history
History
- Handoffs
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS131961 | JPIRR | Dokkyo University 202.252.104.0/22 | MAINT-AS131961 | Dec 1, 2025 |
Whois
Registration for this announcement
- Range
- 202.252.104.0/22
- Netname
- DOK-NET-CIDR-BLK-JP
- Registrant
- Dokkyo University
- Registrant country
- JP
- Organization
- Dokkyo University
- Org country
- JP
- Created
- Not stated by the registry
- Updated
- Aug 23, 2021
- RIR
- APNIC
- Country
- JP
- Delegated
- Mar 29, 1995
- Status
- assigned