`harvardcc.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:4fc6^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:93d0^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.79.198^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.147.208^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cass.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a51^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cass.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c051^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cass.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2051^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cass.ns.cloudflare.com`
		A	108.162.192.81^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cass.ns.cloudflare.com`
		A	172.64.32.81^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cass.ns.cloudflare.com`
		A	173.245.58.81^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cass.ns.cloudflare.com`
NS	`nitin.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bd7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nitin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1d7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nitin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21d7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nitin.ns.cloudflare.com`
		A	108.162.193.215^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nitin.ns.cloudflare.com`
		A	172.64.33.215^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nitin.ns.cloudflare.com`
		A	173.245.59.215^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nitin.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.79.198, 172.67.147.208
		IPv6	2606:4700:3034::6815:4fc6, 2606:4700:3034::ac43:93d0
SOA	`cass.ns.cloudflare.com`dns@cloudflare.com serial=2398554444

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1773551953

Same first word

harvardcc.org

DNS History

16 records (6 active, 10 former)

●NScass.ns.cloudflare.com2026-02-17 → 2026-03-23 · 3 obs

○ 2017-11-22 23:00:48
● 2026-02-17 11:44:06
● 2026-03-23 16:02:22

●NSnitin.ns.cloudflare.com2026-02-17 → 2026-03-23 · 3 obs

○ 2017-11-22 23:00:48
● 2026-02-17 11:44:06
● 2026-03-23 16:02:22

○NSns1103.ui-dns.biz2017-11-22 → 2017-11-22 · 4 obs

○ 2016-11-08 01:42:40
● 2017-11-22 23:00:48
○ 2026-02-17 11:44:06
○ 2026-03-23 16:02:22

○NSns1103.ui-dns.com2017-11-22 → 2017-11-22 · 4 obs

○ 2016-11-08 01:42:40
● 2017-11-22 23:00:48
○ 2026-02-17 11:44:06
○ 2026-03-23 16:02:22

○NSns1103.ui-dns.de2017-11-22 → 2017-11-22 · 4 obs

○ 2016-11-08 01:42:40
● 2017-11-22 23:00:48
○ 2026-02-17 11:44:06
○ 2026-03-23 16:02:22

○NSns1103.ui-dns.org2017-11-22 → 2017-11-22 · 4 obs

○ 2016-11-08 01:42:40
● 2017-11-22 23:00:48
○ 2026-02-17 11:44:06
○ 2026-03-23 16:02:22

○NSns57.1and1.com2015-08-04 → 2016-11-08 · 4 obs

● 2015-08-04 00:51:10
● 2016-11-08 01:42:40
○ 2017-11-22 23:00:48
○ 2026-03-23 16:02:22

○NSns58.1and1.com2015-08-04 → 2016-11-08 · 4 obs

● 2015-08-04 00:51:10
● 2016-11-08 01:42:40
○ 2017-11-22 23:00:48
○ 2026-03-23 16:02:22

○MXmx00.1and1.com2015-08-04 → 2017-11-22 · 4 obs

● 2015-08-04 00:51:10
● 2017-11-22 23:00:48
○ 2026-02-17 11:44:06
○ 2026-03-23 16:02:22

○MXmx01.1and1.com2015-08-04 → 2017-11-22 · 4 obs

● 2015-08-04 00:51:10
● 2017-11-22 23:00:48
○ 2026-02-17 11:44:06
○ 2026-03-23 16:02:22

●A104.21.79.1982026-02-17 → 2026-03-23 · 3 obs

○ 2017-11-22 23:00:48
● 2026-02-17 11:44:06
● 2026-03-23 16:02:22

●A172.67.147.2082026-02-17 → 2026-03-23 · 3 obs

○ 2017-11-22 23:00:48
● 2026-02-17 11:44:06
● 2026-03-23 16:02:22

○A216.250.120.1432016-11-08 → 2017-11-22 · 5 obs

○ 2016-03-10 04:58:58
● 2016-11-08 01:42:40
● 2017-11-22 23:00:48
○ 2026-02-17 11:44:06
○ 2026-03-23 16:02:22

●A2606:4700:3034::6815:4fc62026-02-17 → 2026-03-23 · 3 obs

○ 2017-11-22 23:00:48
● 2026-02-17 11:44:06
● 2026-03-23 16:02:22

●A2606:4700:3034::ac43:93d02026-02-17 → 2026-03-23 · 3 obs

○ 2017-11-22 23:00:48
● 2026-02-17 11:44:06
● 2026-03-23 16:02:22

○A74.208.138.2012015-08-04 → 2016-03-10 · 4 obs

● 2015-08-04 00:51:10
● 2016-03-10 04:58:58
○ 2016-11-08 01:42:40
○ 2026-03-23 16:02:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
harvardcc.org	cass.ns.cloudflare.com, nitin.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.81

NS records: cass.ns.cloudflare.com, nitin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for harvardcc.org (unsigned zone)

⏱️ Timing

Total: 519ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.79.198, 172.67.147.208`
AAAA	2	`2606:4700:3034::ac43:93d0, 2606:4700:3034::6815:4fc6`
NS	2	`cass.ns.cloudflare.com, nitin.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cass.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

harvardcc.org resolves to four IP numbers: 2606:4700:3034::6815:4fc6, 2606:4700:3034::ac43:93d0, 104.21.79.198 and 172.67.147.208.

other host names for instance desklink.com, oregoncoast101.com, uvosacafe.sbs, jangkara.com and localimplants.com share IP numbers with harvardcc.org.

Name Servers

harvardcc.org is delegated to two name servers: cass.ns.cloudflare.com and nitin.ns.cloudflare.com.

harvardcc.org shares the same name server setup as other domains, for example nejhosting.net, vacio.org, ctcs1.org, ovibash.net and vrangsinn.net.

harvardcc.org at least partially shares name servers with other domains, for instance indeed.amsterdam, thyedu.com, rnbweb.com.ar, haylla.com and aptonbio.com.

These name servers are commonly used alongside the name servers irma.ns.cloudflare.com, terry.ns.cloudflare.com, celine.ns.cloudflare.com, ulla.ns.cloudflare.com and aragorn.ns.cloudflare.com.

Host names with six IP numbers:

cass.ns.cloudflare.com points to: 2606:4700:50::adf5:3a51, 2803:f800:50::6ca2:c051, 2a06:98c1:50::ac40:2051, 108.162.192.81, 172.64.32.81 and 173.245.58.81; nitin.ns.cloudflare.com points to: 2606:4700:58::adf5:3bd7, 2803:f800:50::6ca2:c1d7, 2a06:98c1:50::ac40:21d7, 108.162.193.215, 172.64.33.215 and 173.245.59.215.

harvardcc.org - robtex.com

harvardcc.org

org

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`harvardcc.org`

`org`