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Data as of Nov 9, 2026

210.137.12.0/22

No anonymizer space · no proxy exits in 30 days

Research Organization of Information and Systems, National Institute of Informatics · space held by Japan Network Information Center

Announcement
this exact prefix
RPKI valid
Announced by
AS2907
Type
Business
Risk
0 / 100 · Low

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
210.137.0.0/16
since May 2005
AS2907Business141
4 always on
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.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
210.136.0.0/13524,288JPNIC-NET-JPJapan Network Information CenterALLOCATED PORTABLE—hostmaster@nic.ad.jp

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
Japan Network Information Center
Range
210.136.0.0/13
Registration type
ALLOCATED PORTABLE
Origin network

AS2907

JP
Name
Research Organization of Information and Systems, National Institute of Informatics
Type
Education
Registered
Aug 1, 2002
Domain
sinet.ad.jp
Website
www.sinet.ad.jp/
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed