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Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
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AS24287
TEIN2-JP - National Institute of Informatics Announcing routesAS nameTEIN2-JP
CountryJP
Registry (RIR)APNIC
HandleAS24287
RangeAS24287
Registered—
Last changed22 Jun 2007
Abuse contact[email protected]
1IPv4 prefixes
1IPv6 prefixes
3Upstreams
4Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS2907 | SINET-AS - Research Organization of Information and Systems, National Institute of Informatics | 219 |
| AS24490 | TEIN2-SG-AP - Trans-Eurasia Information Network (TEIN2) - SG | 146 |
| AS7660 | APAN-JP - Asia Pacific Advanced Network - Japan | 88 |
Downstreams
| AS | Network name | Visibility |
|---|---|---|
| AS2907 | SINET-AS - Research Organization of Information and Systems, National Institute of Informatics | 99 |
| AS24490 | TEIN2-SG-AP - Trans-Eurasia Information Network (TEIN2) - SG | 80 |
| AS7660 | APAN-JP - Asia Pacific Advanced Network - Japan | 46 |
| AS24489 | TEIN2-NORTH-AP - Trans-Eurasia Information Network (TEIN2) - North | 27 |
IPv4 prefixes (1)
IPv6 prefixes (1)
RPKI-validate all prefixes of AS24287
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| technical, administrative | Japan Network Information Center | JNIC1-AP | [email protected], +81-3-5297-2311, +81-3-5297-2312 | Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda, Chiyoda-ku, Tokyo 101-0047, Japan |
| technical, administrative | JP00006158 | |||
| abuse | IRT-JPNIC-JP | IRT-JPNIC-JP | [email protected], [email protected], +81-3-5297-2311, +81-3-5297-2312 | Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda, Chiyoda-ku, Tokyo 101-0047, japan |
Raw registry response
{
"rdapConformance": [
"nro_rdap_profile_0",
"nro_rdap_profile_asn_hierarchical_0",
"cidr0",
"rdap_level_0"
],
"notices": [
{
"title": "Source",
"description": [
"Objects returned came from source",
"JPNIC"
]
},
{
"title": "Terms and Conditions",
"description": [
"This is the APNIC WHOIS Database query service. The objects are in RDAP format.",
"This information has been partially mirrored by APNIC from JPNIC. To obtain more specific information, please use the JPNIC WHOIS Gateway at http://www.nic.ad.jp/en/db/whois/en-gateway.html or whois.nic.ad.jp for WHOIS client. (The WHOIS client defaults to Japanese output, use the /e switch for English output)"
],
"links": [
{
"value": "https://jpnic.rdap.apnic.net/autnum/24287",
"rel": "terms-of-service",
"href": "http://www.apnic.net/db/dbcopyright.html",
"type": "text/html"
}
]
},
{
"title": "Whois Inaccuracy Reporting",
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"value": "https://jpnic.rdap.apnic.net/autnum/24287",
"rel": "inaccuracy-report",
"href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
"type": "text/html"
}
]
}
],
"country": "JP",
"name": "TEIN2-JP",
"status": [
"active"
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2007-06-22T01:05:11Z"
}
],
"links": [
{
"value": "https://jpnic.rdap.apnic.net/autnum/24287",
"rel": "self",
"href": "https://jpnic.rdap.apnic.net/autnum/24287",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"National Institute of Informatics"
],
"title": "description"
}
],
"entities": [
{
"roles": [
"technical",
"administrative"
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2022-01-05T03:04:02Z"
}
],
"links": [
{
"value": "https://jpnic.rdap.apnic.net/autnum/24287",
"rel": "self",
"href": "https://jpnic.rdap.apnic.net/entity/JNIC1-AP",
"type": "application/rdap+json"
}
],
"handle": "JNIC1-AP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Japan Network Information Center"
],
[
"kind",
[],
"text",
"group"
],
[
"adr",
{
"label": "Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda\nChiyoda-ku, Tokyo 101-0047, Japan"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+81-3-5297-2311"
],
[
"tel",
{
"type": "fax"
},
"text",
"+81-3-5297-2312"
],
[
"email",
[],
"text",
"[email protected]"
]
]
]
},
{
"roles": [
"technical",
"administrative"
],
"links": [
{
"value": "https://jpnic.rdap.apnic.net/autnum/24287",
"rel": "related",
"href": "http://whois.nic.ad.jp/cgi-bin/whois_gw?key=JP00006158/e",
"type": "text/html",
"hreflang": "en"
},
{
"value": "https://jpnic.rdap.apnic.net/autnum/24287",
"rel": "related",
"href": "http://whois.nic.ad.jp/cgi-bin/whois_gw?key=JP00006158",
"type": "text/html",
"hreflang": "jp"
}
],
"handle": "JP00006158",
"objectClassName": "entity"
},
{
"roles": [
"abuse"
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-10-20T09:11:46Z"
}
],
"links": [
{
"value": "https://jpnic.rdap.apnic.net/autnum/24287",
"rel": "self",
"href": "https://jpnic.rdap.apnic.net/entity/IRT-JPNIC-JP",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"[email protected] was validated on 2024-11-27"
],
"title": "remarks"
}
],
"handle": "IRT-JPNIC-JP",
"objectClassName": "entity",
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"IRT-JPNIC-JP"
],
[
"kind",
[],
"text",
"group"
],
[
"adr",
{
"label": "Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda\nChiyoda-ku, Tokyo 101-0047, japan"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+81-3-5297-2311"
],
[
"tel",
{
"type": "fax"
},
"text",
"+81-3-5297-2312"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
{
"pref": "1"
},
"text",
"[email protected]"
]
]
]
}
],
"handle": "AS24287",
"startAutnum": 24287,
"endAutnum": 24287,
"objectClassName": "autnum",
"port43": "whois.apnic.net"
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.
