IP-FD.net
Sign in
  1. Home
  2. Japan
  3. AS24255

AS24255 Koshinomiyako Network, Inc.

Japan T-CATV APNIC 7 IPv4 prefixes 1 IPv6 prefix
IPv4 addresses
27,648
IPv6 /48 networks
65,536
RPKI
7 valid1 no ROA
Peers and downstreams
16

Holder

AS name
T-CATV
Description
Tannan Cable Television Corporation Takefusyokokaikan 2F Tuka-mati 101 Echizen-City Fukui-Pref Japan
Organisation
Koshinomiyako Network, Inc.
Abuse contact
Not published
Assigned
2004-10-18
Record last changed
2025-01-09 18:45 UTC

Upstream graph

Upstreams and their upstreams, from BGP paths
AS174 AS174 AS174 AS174 AS3356 Level 3 Parent, LLC AS3356 · US Level 3 Parent, LLC AS6461 Zayo Bandwidth AS6461 · US Zayo Bandwidth AS1299 Arelion Sweden AB AS1299 · SE Arelion Sweden AB AS3257 GTT Communications Inc. AS3257 · US GTT Communications In… AS9002 RETN Limited AS9002 · GB RETN Limited AS5405 Inter.link GmbH AS5405 · DE Inter.link GmbH AS8220 COLT Technology Services Group Limited AS8220 · GB COLT Technology Servi… AS6939 Hurricane Electric LLC AS6939 · US Hurricane Electric LLC AS2497 Internet Initiative Japan Inc. AS2497 · JP Internet Initiative J… AS17676 SoftBank Corp. AS17676 · JP SoftBank Corp. AS2518 BIGLOBE Inc. AS2518 · JP BIGLOBE Inc. AS9824 JCOM Co., Ltd. AS9824 · JP JCOM Co., Ltd. AS24255 Koshinomiyako Network, Inc. AS24255 · JP Koshinomiyako Network…

Network health

Grade B · 87/100
partly Prefixes covered by valid ROAs
7 of 8 announced prefixes are RPKI valid, 1 have no ROA.		 22/25
pass No RPKI invalid announcements
None of the announcements is RPKI invalid.		 10/10
pass Announces IPv6
1 IPv6 prefix.		 15/15
pass More than one upstream
5 upstreams seen in BGP.		 10/10
pass Working abuse contact
hostmaster@nic.ad.jp is published.		 15/15
fail Publishes a geofeed
No geofeed found. Without one, location databases have to guess.		 0/10
pass No prefixes smaller than /24 or /48
All prefixes are /24 (IPv4) or /48 (IPv6) or larger.		 10/10
pass Registry record maintained
Last changed 2025-01-09.		 5/5
Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.
Show this on your website
AS24255 health AS24255 RPKI
HTML
<a href="https://ip-fd.net/asn/24255"><img src="https://ip-fd.net/badge/asn/24255/health.svg" alt="AS24255 network health on IP-FD.net"></a>
Markdown
[![AS24255 network health](https://ip-fd.net/badge/asn/24255/health.svg)](https://ip-fd.net/asn/24255)
Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days
2026-10-04 18:45 UTCRelationship changed AS8966 upstream to peer
2026-10-04 18:45 UTCRelationship changed AS20485 upstream to peer
2026-10-04 18:45 UTCRelationship changed AS17534 upstream to peer

WHOIS

aut-num:        AS24255
as-name:        T-CATV
handle:         AS24255
remarks:        Koshinomiyako Network, Inc.
technical:      SH4197JP
administrative: MK79943JP
technical,administrative:JNIC1-AP (Japan Network Information Center) <hostmaster@nic.ad.jp>
abuse:          IRT-JPNIC-JP (IRT-JPNIC-JP) <hostmaster@nic.ad.jp>
technical:      RT1196JP
last changed:   2025-01-09T18:45:08Z
source:         APNIC (RDAP)