Organization
SCSK Corporation
SCS
Registered
Mar 26, 2001
25 years ago
IPv4 Prefixes
2
6,144 addresses
IPv6 Prefixes
0
BGP Neighbours
1
1 upstream/peer · 0 downstream
Registration
AS Number AS17680 AS Name SCS Country Japan (JP) Registry APNIC Allocated Mar 26, 2001 Last Updated Apr 12, 2012 Status
active
WHOIS Server whois.apnic.net AS Description SCS - SCSK Corporation, JP Remarks SCSK Corporation Abuse Email [email protected] Abuse Phone +81-3-5297-2311 IPv4 Prefixes
2 prefixes · 6,144 addresses Routing data as of 2026-10-09 16:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 61.213.48.0/20 | 61.213.48.0 – 61.213.63.255 | 4,096 |
| 110.50.24.0/21 | 110.50.24.0 – 110.50.31.255 | 2,048 |
IPv6 Prefixes
This AS does not currently announce any IPv6 prefixes.
BGP Neighbours
1 unique neighbour · 1 upstream/peer · 0 downstream. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Upstream & peer side (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS4693 CSK - CSK-IT MANAGEMENT CORPORATION 269 670 0
Raw RDAP 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/17680",
"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/17680",
"rel": "inaccuracy-report",
"href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
"type": "text/html"
}
]
}
],
"country": "JP",
"name": "SCS",
"status": [
"active"
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2012-04-12T02:34:15Z"
}
],
"links": [
{
"value": "https://jpnic.rdap.apnic.net/autnum/17680",
"rel": "self",
"href": "https://jpnic.rdap.apnic.net/autnum/17680",
"type": "application/rdap+json"
}
],
"remarks": [
{
"description": [
"SCSK Corporation"
],
"title": "description"
}
],
"entities": [
{
"roles": [
"administrative",
"technical"
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2022-01-05T03:04:02Z"
}
],
"links": [
{
"value": "https://jpnic.rdap.apnic.net/autnum/17680",
"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": [
"administrative"
],
"links": [
{
"value": "https://jpnic.rdap.apnic.net/autnum/17680",
"rel": "related",
"href": "http://whois.nic.ad.jp/cgi-bin/whois_gw?key=KY10234JP/e",
"type": "text/html",
"hreflang": "en"
},
{
"value": "https://jpnic.rdap.apnic.net/autnum/17680",
"rel": "related",
"href": "http://whois.nic.ad.jp/cgi-bin/whois_gw?key=KY10234JP",
"type": "text/html",
"hreflang": "jp"
}
],
"handle": "KY10234JP",
"objectClassName": "entity"
},
{
"roles": [
"technical"
],
"links": [
{
"value": "https://jpnic.rdap.apnic.net/autnum/17680",
"rel": "related",
"href": "http://whois.nic.ad.jp/cgi-bin/whois_gw?key=OY1966JP/e",
"type": "text/html",
"hreflang": "en"
},
{
"value": "https://jpnic.rdap.apnic.net/autnum/17680",
"rel": "related",
"href": "http://whois.nic.ad.jp/cgi-bin/whois_gw?key=OY1966JP",
"type": "text/html",
"hreflang": "jp"
}
],
"handle": "OY1966JP",
"objectClassName": "entity"
},
{
"roles": [
"technical"
],
"links": [
{
"value": "https://jpnic.rdap.apnic.net/autnum/17680",
"rel": "related",
"href": "http://whois.nic.ad.jp/cgi-bin/whois_gw?key=MO10782JP/e",
"type": "text/html",
"hreflang": "en"
},
{
"value": "https://jpnic.rdap.apnic.net/autnum/17680",
"rel": "related",
"href": "http://whois.nic.ad.jp/cgi-bin/whois_gw?key=MO10782JP",
"type": "text/html",
"hreflang": "jp"
}
],
"handle": "MO10782JP",
"objectClassName": "entity"
},
{
"roles": [
"abuse"
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-09-04T01:00:00Z"
}
],
"links": [
{
"value": "https://jpnic.rdap.apnic.net/autnum/17680",
"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": "AS17680",
"startAutnum": 17680,
"endAutnum": 17680,
"objectClassName": "autnum",
"port43": "whois.apnic.net"
} Contact details of private individuals are redacted.