ICT Trouble Shooting Contest
AS2509 is ICT Trouble Shooting Contest (icttoracon.net). It announces 0 IPv4 addresses in 0 prefixes, and 0 IPv6 prefixes.
Japan· APNIC· allocated 2002-04-05· Education· icttoracon.net
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- ICTSC
- name
- ICT Trouble Shooting Contest
- country
- JP
- source
- jpnic
- updated
- 2026-11-06
- descr
- ICT Trouble Shooting Contest
- admin
- JP00294422
- tech
- JP00294422
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
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Test the real build first.
An evaluation license puts a full current build in your hands, with no sampling, so you can measure it against your own traffic before anyone talks about terms.