WWW.RTSAK.COM - extension.harvard.edu

Search for IP or hostnames:

extension.harvard.edu checked at 2025-10-13T01:53:20.067Z 346ms 137/137/137 100% R:14

`extension.harvard.edu`

MX	`mx0a-00171101.pphosted.com`
		A	67.231.148.27^{🇺🇸 Proofpoint}
			PTR	`mx0a-00171101.pphosted.com`
MX	`mx0b-00171101.pphosted.com`
		A	67.231.156.27^{🇺🇸 Proofpoint}
			PTR	`mx0b-00171101.pphosted.com`
NS	`a1-171.akam.net`
		A	2600:1401:2::ab ^{🇺🇸 Akamai}
			PTR	`a1-171.akam.net`
			PTR	`ns1-171.akam.net`
		A	193.108.91.171^{🇳🇱 Akamai}
			PTR	`a1-171.akam.net`
			PTR	`ns1-171.akam.net`
NS	`a10-66.akam.net`
		A	2600:1480:d000::42 ^{🇺🇸 Akamai}
			PTR	`a10-66.akam.net`
		A	96.7.50.66^{🇺🇸 Akamai}
			PTR	`a10-66.akam.net`
NS	`a11-67.akam.net`
		A	2600:1480:1::43 ^{🇺🇸 Akamai}
			PTR	`a11-67.akam.net`
			PTR	`ns4-67.akam.net`
		A	84.53.139.67^{🇳🇱 Akamai}
			PTR	`a11-67.akam.net`
			PTR	`ns4-67.akam.net`
NS	`a16-64.akam.net`
		A	2600:1406:1b::40 ^{🇺🇸 Akamai}
			PTR	`a16-64.akam.net`
		A	23.211.132.64^{🇺🇸 Akamai}
			PTR	`a16-64.akam.net`
NS	`a6-66.akam.net`
		A	2600:1401:1::42 ^{🇺🇸 Akamai}
			PTR	`a6-66.akam.net`
		A	23.211.133.66^{🇺🇸 Akamai}
			PTR	`a6-66.akam.net`
NS	`a7-65.akam.net`
		A	2600:1406:32::41 ^{🇺🇸 Akamai}
			PTR	`a7-65.akam.net`
			PTR	`ns3-65.akam.net`
		A	23.61.199.65^{🇺🇸 Akamai}
			PTR	`a7-65.akam.net`
			PTR	`ns3-65.akam.net`
A	2620:12a:8000::1 ^{🇺🇸 Fastly}
A	2620:12a:8001::1 ^{🇺🇸 Fastly}
A	23.185.0.1^{🇺🇸 Fastly}

`harvard.edu`

	MX	`mx0a-00171101.pphosted.com`
	MX	`mx0b-00171101.pphosted.com`
	NS	`a1-171.akam.net`
	NS	`a10-66.akam.net`
	NS	`a11-67.akam.net`
	NS	`a16-64.akam.net`
	NS	`a6-66.akam.net`
	NS	`a7-65.akam.net`
	A	192.0.66.20^{🇺🇸 Automattic}

rank #103 globally
rank #1 in the tld
This domain name "harvard.edu" represents the official website of Harvard University, a prestigious Ivy League research university located in Cambridge, Massachusetts, United States. It serves as a platform for the institution to share information about its academics, research, admissions, campus life, news, events, and other university-related content to students, staff, alumni, and the public.

Up

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AI analysis

extension.harvard.edu is a parent of my.extension.harvard.edu, carc.extension.harvard.edu, thesis.extension.harvard.edu, m.extension.harvard.edu and itunes.extension.harvard.edu, plus a few other host names.

extension.harvard.edu resolves to three IP numbers: 2620:12a:8000::1, 2620:12a:8001::1 and 23.185.0.1.

Other host names, for instance live-gpse.pantheonsite.io, greensceneinc.com, asbcouncil.org, insourcess.com and returnpath.com share IP numbers with extension.harvard.edu.

extension.harvard.edu is delegated to six name servers: a1-171.akam.net, a10-66.akam.net, a11-67.akam.net, a16-64.akam.net, a6-66.akam.net and a7-65.akam.net.

extension.harvard.edu at least partially shares name servers with other domains, including 227.198.in-addr.arpa, mvmasters.com, 179.14.72.in-addr.arpa, 7.101.198.in-addr.arpa and realinvest.at.

These name servers are commonly used with a9-66.akam.net, a4-64.akam.net, a12-65.akam.net, a3-67.akam.net, a3-65.akam.net, a1-249.akam.net, a12-67.akam.net, a26-64.akam.net, a7-66.akam.net and a13-67.akam.net.

Host names with two IP numbers: a1-171.akam.net points to: 2600:1401:2::ab and 193.108.91.171; a10-66.akam.net points to: 2600:1480:d000::42 and 96.7.50.66; a11-67.akam.net points to: 2600:1480:1::43 and 84.53.139.67; a16-64.akam.net points to: 2600:1406:1b::40 and 23.211.132.64; a6-66.akam.net points to: 2600:1401:1::42 and 23.211.133.66; a7-65.akam.net points to: 2600:1406:32::41 and 23.61.199.65.

extension.harvard.edu is served by two mail servers mx0a-00171101.pphosted.com and mx0b-00171101.pphosted.com.

extension.harvard.edu shares the same mail server setup as other domains, for instance flyrnai.org, law.harvard.edu, hst.harvard.edu, das.harvard.edu and clubs.harvard.edu.

extension.harvard.edu shares some mail servers with other domains, at least in part; for example unix.fas.harvard.edu and calists.harvard.edu.

Host names with a single IP address: mx0a-00171101.pphosted.com points to 67.231.148.27; mx0b-00171101.pphosted.com points to 67.231.156.27.

dbq