AS2907Science Information Network

JapanRegistryAPNICTypeEyeball

As of 11th November 2026, AS2907 (Science Information Network), an access network registered in Japan with APNIC, originates 614 IPv4 prefixes covering 9M addresses and 2 IPv6 prefixes. By IPv4 address space that makes it the 77th-largest of the 80,743 networks we see originating IPv4, and the 5th-largest of 737 in Japan. It is seen behind 17 upstream networks, most often AS2497 (Internet Initiative Japan Inc.) and AS6939 (Hurricane Electric LLC), and in front of 96 downstream networks. 7% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 98% of its routes reach at least 90% of full-feed peers.