Hello nusenu,
since the JPNIC feed is pretty straightforward, I just submitted a patch for processing it as well (see: https://patchwork.ipfire.org/project/location/patch/8a35bdb5-401b-6a7f-2ae4-...).
A quick and dirty check with the AS list provided by you indicates we now have coverage for all of them:
$ for asn in $( cat nusenu-jpnic-missing-asns ); do location --database tmp-database get-as $asn; done AS2510 belongs to INFOWEB_FUJITSU AS2514 belongs to NTT PC Communications, Inc. AS2516 belongs to KDDI CORPORATION AS2527 belongs to Sony Network Communications Inc. AS4685 belongs to Asahi Net, Inc. AS4694 belongs to IDC Frontier Inc. AS4713 belongs to NTT Communications Corporation AS4725 belongs to SOFTBANK Corp. Open Data Network. AS7506 belongs to GMO Internet INC. AS7684 belongs to SAKURA Internet // HOKKAIDO BACKBONE AS9370 belongs to SAKURA Internet // EAST JAPAN BACKBONE AS9371 belongs to SAKURA Internet // WEST JAPAN BACKBONE AS10010 belongs to TOKAI AS17676 belongs to SoftBank Corp. AS18126 belongs to Chubu Telecommunications Company, Inc. AS59103 belongs to SoftEther Corporation
Since libloc 0.9.8 was released just a the other day (@Michael: Shouldn't we announce this properly?), this patch will go into the next version of it. If you are building libloc yourselves from scratch, you can also apply it to the current "master" branch.
Unless I missed something, TWNIC and KRNIC are mirroring important information back to APNIC, so we aren't missing anything here. This leaves us with LACNIC still in need of an improvement...
Thanks, and best regards, Peter Müller