AS10209 Japan HUB and Data Center 🇯🇵 JP

Synopsys. Announcing 4 prefixes, seen at the RIS collectors.

IPv4 prefixes
4
1,280 (5 × /24)
IPv6 prefixes
0
-
Upstreams
2
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it

Registry and operator data

AS number
AS10209
Name
Japan HUB and Data Center
Organisation
Synopsys
Country
🇯🇵 JP
RIR
APNIC
Allocated
2007-09-25

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

0 valid (0.0%) 0 invalid (0.0%) 4 no ROA (100.0%)

Announcement history

One point per day, recorded at each table import

0123409-1809-2610-0410-1210-2010-2811-0511-06
IPv4 IPv6

Recorded changes

New prefixes and origin changes seen on the live stream

WhenChangePrefixOriginPath
2026-11-05 09:37:29Z origin change 149.117.1.0/24 AS10209 → AS397635 35493356397635
2026-11-05 09:37:00Z origin change 149.117.1.0/24 AS397635 → AS10209 3549335610209
2026-11-05 09:36:52Z origin change 149.117.1.0/24 AS10209 → AS397635 7018397635
2026-11-05 09:36:38Z origin change 149.117.1.0/24 AS397635 → AS10209 202056939335610209
2026-11-05 09:36:38Z origin change 149.117.1.0/24 AS10209 → AS397635 70183356397635
2026-11-05 09:36:38Z origin change 149.117.1.0/24 AS397635 → AS10209 7018335610209
2026-11-05 09:36:38Z origin change 149.117.1.0/24 AS397635 → AS10209 49134533566939335610209
2026-11-05 09:36:37Z origin change 149.117.1.0/24 AS10209 → AS397635 6121869397018397635
2026-11-05 09:36:37Z origin change 149.117.1.0/24 AS397635 → AS10209 612186939335610209
2026-11-05 09:36:37Z origin change 149.117.1.0/24 AS10209 → AS397635 491345335669397018397635
2026-11-05 05:06:27Z origin change 149.117.1.0/24 AS10209 → AS397635 226521743356397635
2026-11-05 05:06:08Z origin change 149.117.1.0/24 AS397635 → AS10209 3549335610209
2026-11-05 05:06:02Z origin change 149.117.1.0/24 AS10209 → AS397635 491345335669393356397635
2026-11-05 05:05:46Z origin change 149.117.1.0/24 AS7809 → AS10209 612186939335610209
2026-11-04 20:45:27Z origin change 149.117.1.0/24 AS10209 → AS7809 20649934549129982207809
2026-11-04 20:17:35Z origin change 149.117.1.0/24 AS7809 → AS10209 557206939335610209
2026-11-04 04:38:33Z origin change 149.117.1.0/24 AS10209 → AS7809 32884032772717433567809
2026-11-04 04:38:05Z origin change 149.117.1.0/24 AS7809 → AS10209 328840327727174335610209
2026-11-04 04:37:10Z origin change 149.117.1.0/24 AS10209 → AS7809 379895630013213282207809
2026-11-04 04:37:09Z origin change 149.117.1.0/24 AS10209 → AS7809 2950439392129982207809
2026-11-04 04:37:09Z origin change 149.117.1.0/24 AS7809 → AS10209 34927566556939335610209
2026-11-04 04:37:00Z origin change 149.117.1.0/24 AS10209 → AS397635 443935805769393356397635
2026-11-04 04:37:00Z origin change 149.117.1.0/24 AS397635 → AS10209 21628582806762335610209
2026-11-04 04:36:56Z origin change 149.117.1.0/24 AS7809 → AS10209 50628335610209
2026-11-04 04:36:56Z origin change 149.117.1.0/24 AS10209 → AS397635 377213356397635
2026-11-04 04:36:56Z origin change 149.117.1.0/24 AS7809 → AS10209 57821125863257335610209
2026-11-04 04:36:54Z origin change 149.117.1.0/24 AS10209 → AS7809 5805734549291433567809
2026-11-04 04:36:51Z origin change 149.117.1.0/24 AS7809 → AS10209 4967312389335610209
2026-11-04 04:36:42Z origin change 149.117.1.0/24 AS397635 → AS10209 580571836335610209
2026-11-04 04:36:41Z origin change 149.117.1.0/24 AS10209 → AS397635 14035773356397635
2026-11-04 04:36:39Z origin change 149.117.1.0/24 AS10209 → AS397635 85232573356397635
2026-11-04 04:36:38Z origin change 149.117.1.0/24 AS7809 → AS10209 17639335610209
2026-11-04 04:36:38Z origin change 149.117.1.0/24 AS397635 → AS10209 48185335610209
2026-11-04 04:36:37Z origin change 149.117.1.0/24 AS10209 → AS7809 2448282207809
2026-11-04 04:14:00Z origin change 149.117.1.0/24 AS7809 → AS10209 328840327727174335610209
2026-11-04 04:14:00Z origin change 149.117.1.0/24 AS10209 → AS7809 4439335710480933567809
2026-11-04 04:13:38Z origin change 149.117.1.0/24 AS10209 → AS7809 3772133567809
2026-11-04 04:13:36Z origin change 149.117.1.0/24 AS7809 → AS10209 34927566556939335610209
2026-11-04 04:13:27Z origin change 149.117.1.0/24 AS10209 → AS7809 496731238982207809
2026-11-04 04:13:27Z origin change 149.117.1.0/24 AS10209 → AS7809 2950439392129982207809
2026-11-04 04:13:27Z origin change 149.117.1.0/24 AS7809 → AS10209 2132419002335610209
2026-11-04 04:13:27Z origin change 149.117.1.0/24 AS10209 → AS7809 1490782207809
2026-11-04 04:13:27Z origin change 149.117.1.0/24 AS7809 → AS10209 57381503041299335610209
2026-11-04 04:13:27Z origin change 149.117.1.0/24 AS10209 → AS7809 34549129982207809
2026-11-04 04:13:26Z origin change 149.117.1.0/24 AS7809 → AS10209 204092198978174335610209
2026-11-04 04:13:19Z origin change 149.117.1.0/24 AS7809 → AS10209 29504393921299335610209
2026-11-04 04:13:14Z origin change 149.117.1.0/24 AS7809 → AS10209 205141299335610209
2026-11-04 04:13:14Z origin change 149.117.1.0/24 AS10209 → AS7809 5738150304129982207809
2026-11-04 04:13:13Z origin change 149.117.1.0/24 AS10209 → AS7809 58057183633567809
2026-11-04 04:13:12Z origin change 149.117.1.0/24 AS397635 → AS10209 37989563001321324657335610209
2026-11-04 04:13:10Z origin change 149.117.1.0/24 AS10209 → AS397635 377213356397635
2026-11-04 04:13:02Z origin change 149.117.1.0/24 AS7809 → AS10209 48185335610209
2026-11-04 04:13:01Z origin change 149.117.1.0/24 AS10209 → AS7809 34549291433567809
2026-11-04 04:12:59Z origin change 149.117.1.0/24 AS7809 → AS10209 49432483621764335610209
2026-11-04 04:12:58Z origin change 149.117.1.0/24 AS397635 → AS10209 17639335610209
2026-11-04 04:12:58Z origin change 149.117.1.0/24 AS10209 → AS397635 149073356397635
2026-11-02 12:36:50Z origin change 149.117.1.0/24 AS10209 → AS7809 204092340193562582207809
2026-11-02 07:42:08Z origin change 149.117.1.0/24 AS7809 → AS10209 557206939335610209
2026-10-28 14:12:43Z origin change 149.117.1.0/24 AS10209 → AS397635 4608122146373356397635
2026-10-28 11:14:54Z origin change 149.117.1.0/24 AS7809 → AS10209 460812214637335610209
2026-10-28 08:04:22Z origin change 149.117.1.0/24 AS10209 → AS7809 3772133567809
2026-10-27 14:46:08Z origin change 149.117.1.0/24 AS7809 → AS10209 557206939335610209