WWW.RTSAK.COM - sd.keio.ac.jp

Search for IP or hostnames:

sd.keio.ac.jp checked at 2025-10-28T15:10:53.862Z 616ms 88/88/88 100% R:19

`sd.keio.ac.jp`

NS	`ns0.keio.ac.jp`
		A	2001:df0:eb:e14::3 ^{🇯🇵 KEIO-NET}
			PTR	`ns0.keio.ac.jp`
		A	131.113.132.3^{🇯🇵 KEIO-NET}
			PTR	`ns0.keio.ac.jp`
NS	`ns1.keio.ac.jp`
		A	2001:df0:eb:e14::4 ^{🇯🇵 KEIO-NET}
			PTR	`ns1.keio.ac.jp`
		A	131.113.132.4^{🇯🇵 KEIO-NET}
			PTR	`ns1.keio.ac.jp`
NS	`ns9.keio.ac.jp`
		A	2403:3a00:202:190a:133:167:67:76 ^{🇯🇵 SAKURA-C}
			PTR	`ns9.keio.ac.jp`
		A	133.167.67.76^{🇯🇵 SAKURA-C}
			PTR	`ns9.keio.ac.jp`
MX	`sdsrv.sd.keio.ac.jp`
		A	111.89.138.116^{🇯🇵 NTT PC Communications (InfoSphere)}
			PTR	`sd.keio.ac.jp`
A	111.89.138.116^{🇯🇵 NTT PC Communications (InfoSphere)}
		PTR	`sd.keio.ac.jp`

`keio.ac.jp`

	NS	`a1-123.akam.net`
	NS	`a14-66.akam.net`
	NS	`a26-67.akam.net`
	NS	`a3-64.akam.net`
	NS	`a4-65.akam.net`
	NS	`a5-66.akam.net`
	MX	`vmx2.m0.keio.ac.jp`
	A	2001:df0:eb:e0f:131:113:131:113 ^{🇯🇵 KEIO-NET}
	A	131.113.131.113^{🇯🇵 KEIO-NET}

rank #3657 globally
rank #55 in the tld
This domain name represents Keio University, a private, comprehensive higher education institution located in Minato, Tokyo, Japan. It is one of the oldest and most prestigious universities in Japan, known for its globally recognized research and academic programs. The ".ac.jp" indicates that it is an academic institution in Japan.

PTR for

116.138.89.111.in-addr.arpa

Up

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sum.sd.keio.ac.jp

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Starts similarily

sd.bike

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AI analysis

sd.keio.ac.jp is the parent of west.sd.keio.ac.jp, sum.sd.keio.ac.jp, yt.sd.keio.ac.jp, rapid4.sd.keio.ac.jp, naga.sd.keio.ac.jp and a few other host names.

sd.keio.ac.jp resolves to one IP number: 111.89.138.116.

Other host names, for instance sdsrv.sd.keio.ac.jp, share IP numbers with sd.keio.ac.jp.

sd.keio.ac.jp is delegated to three name servers ns0.keio.ac.jp, ns1.keio.ac.jp and ns9.keio.ac.jp.

sd.keio.ac.jp at least partially shares name servers with other domains, for instance 104.113.131.in-addr.arpa, 122.113.131.in-addr.arpa, mita.itc.keio.ac.jp, 9.0.e.0.b.e.0.0.0.f.d.0.1.0.0.2.ip6.arpa and 27.133.in-addr.arpa.

These name servers are commonly used with ns0.sfc.keio.ac.jp, ns01.sfc.keio.ac.jp, ns02.sfc.keio.ac.jp, k12.keio-e.ed.jp and boston.yochisha.keio.ac.jp.

Host names with two IP numbers:

ns0.keio.ac.jp points to: 2001:df0:eb:e14::3 and 131.113.132.3.

ns1.keio.ac.jp points to: 2001:df0:eb:e14::4 and 131.113.132.4.

ns9.keio.ac.jp points to: 2403:3a00:202:190a:133:167:67:76 and 133.167.67.76.

sd.keio.ac.jp is handled by a single mail server, sdsrv.sd.keio.ac.jp.

sdsrv.sd.keio.ac.jp resolves to IP 111.89.138.116.

dbq