`northfieldlab.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:37b^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:82b1^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.3.123^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.130.177^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`courtney.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2682^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`courtney.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c282^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`courtney.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2282^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`courtney.ns.cloudflare.com`
		A	108.162.194.130^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`courtney.ns.cloudflare.com`
		A	162.159.38.130^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`courtney.ns.cloudflare.com`
		A	172.64.34.130^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`courtney.ns.cloudflare.com`
NS	`rustam.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c94^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rustam.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c394^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rustam.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2394^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rustam.ns.cloudflare.com`
		A	108.162.195.148^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rustam.ns.cloudflare.com`
		A	162.159.44.148^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rustam.ns.cloudflare.com`
		A	172.64.35.148^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rustam.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.3.123, 172.67.130.177
		IPv6 hints	2606:4700:3032::6815:37b, 2606:4700:3033::ac43:82b1
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=108, name=cloudflare-ech.com
SOA	`courtney.ns.cloudflare.com`dns@cloudflare.com serial=2400497824

`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=1778550994

Same first word

northfieldlab.org

DNS History

20 records (6 active, 14 former)

●NScourtney.ns.cloudflare.com2026-03-11 → 2026-05-12 · 3 obs

○ 2018-05-10 12:21:54
● 2026-03-11 00:58:26
● 2026-05-12 02:20:48

○NSdns022.a.register.com2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 12:21:54
○ 2026-03-11 00:58:26
○ 2026-05-12 02:20:48

○NSdns082.d.register.com2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 12:21:54
○ 2026-03-11 00:58:26
○ 2026-05-12 02:20:48

○NSdns192.b.register.com2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 12:21:54
○ 2026-03-11 00:58:26
○ 2026-05-12 02:20:48

○NSdns205.c.register.com2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 12:21:54
○ 2026-03-11 00:58:26
○ 2026-05-12 02:20:48

●NSrustam.ns.cloudflare.com2026-03-11 → 2026-05-12 · 3 obs

○ 2018-05-10 12:21:54
● 2026-03-11 00:58:26
● 2026-05-12 02:20:48

○MXalt1.aspmx.l.google.com2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 12:21:54
○ 2026-03-11 00:58:26
○ 2026-05-12 02:20:48

○MXalt2.aspmx.l.google.com2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 12:21:54
○ 2026-03-11 00:58:26
○ 2026-05-12 02:20:48

○MXaspmx.l.google.com2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 12:21:54
○ 2026-03-11 00:58:26
○ 2026-05-12 02:20:48

○MXaspmx2.googlemail.com2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 12:21:54
○ 2026-03-11 00:58:26
○ 2026-05-12 02:20:48

○MXaspmx3.googlemail.com2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 12:21:54
○ 2026-03-11 00:58:26
○ 2026-05-12 02:20:48

○MXaspmx4.googlemail.com2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 12:21:54
○ 2026-03-11 00:58:26
○ 2026-05-12 02:20:48

○MXaspmx5.googlemail.com2018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 12:21:54
○ 2026-03-11 00:58:26
○ 2026-05-12 02:20:48

●A104.21.3.1232026-03-11 → 2026-05-12 · 5 obs

○ 2018-05-10 12:21:54
● 2026-03-11 00:58:26
○ 2026-03-16 03:55:08
● 2026-03-17 10:30:56
● 2026-05-12 02:20:48

○A172.64.80.12026-03-16 → 2026-03-16 · 4 obs

○ 2026-03-11 00:58:26
● 2026-03-16 03:55:08
○ 2026-03-17 10:30:56
○ 2026-05-12 02:20:48

●A172.67.130.1772026-03-11 → 2026-05-12 · 5 obs

○ 2018-05-10 12:21:54
● 2026-03-11 00:58:26
○ 2026-03-16 03:55:08
● 2026-03-17 10:30:56
● 2026-05-12 02:20:48

○A199.34.228.762018-05-10 → 2018-05-10 · 3 obs

● 2018-05-10 12:21:54
○ 2026-03-11 00:58:26
○ 2026-05-12 02:20:48

○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-16 → 2026-03-16 · 4 obs

○ 2026-03-11 00:58:26
● 2026-03-16 03:55:08
○ 2026-03-17 10:30:56
○ 2026-05-12 02:20:48

●A2606:4700:3032::6815:37b2026-03-11 → 2026-05-12 · 5 obs

○ 2018-05-10 12:21:54
● 2026-03-11 00:58:26
○ 2026-03-16 03:55:08
● 2026-03-17 10:30:56
● 2026-05-12 02:20:48

●A2606:4700:3033::ac43:82b12026-03-11 → 2026-05-12 · 5 obs

○ 2018-05-10 12:21:54
● 2026-03-11 00:58:26
○ 2026-03-16 03:55:08
● 2026-03-17 10:30:56
● 2026-05-12 02:20:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-
northfieldlab.org	courtney.ns.cloudflare.com, rustam.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.148

NS records: courtney.ns.cloudflare.com, rustam.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for northfieldlab.org (unsigned zone)

⏱️ Timing

Total: 605ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.3.123, 172.67.130.177`
AAAA	2	`2606:4700:3032::6815:37b, 2606:4700:3033::ac43:82b1`
NS	2	`courtney.ns.cloudflare.com, rustam.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`courtney.ns.cloudflare.com dns.cloudflar`

Analysis

IP Addresses

northfieldlab.org maps to four IP numbers: 2606:4700:3032::6815:37b, 2606:4700:3033::ac43:82b1, 104.21.3.123 and 172.67.130.177.

Other host names, for instance 312ms.com.cn, artbyrens.com, 555yyss.com, scallopfestfl.org and rapidfield.ca share IP numbers with northfieldlab.org.

Name Servers

Two name servers courtney.ns.cloudflare.com and rustam.ns.cloudflare.com are delegated to northfieldlab.org.

northfieldlab.org uses the same name server configuration as other domains, such as milanocittastato.it, sjerc.net, c3vp.org, lvpshop.com and wwvip.org.

northfieldlab.org at least partially shares name servers with other domains such as ditcv.dk, profok.ru, mestudent.com, datacentre.co.nz and ourokv7.com.

These name servers are commonly used alongside nelci.ns.cloudflare.com, dalary.ns.cloudflare.com and aurora.ns.cloudflare.com.

Host names with six IP numbers: Host name courtney.ns.cloudflare.com points to 2606:4700:50::a29f:2682, 2803:f800:50::6ca2:c282, 2a06:98c1:50::ac40:2282, 108.162.194.130, 162.159.38.130 and 172.64.34.130; host name rustam.ns.cloudflare.com points to 2606:4700:58::a29f:2c94, 2803:f800:50::6ca2:c394, 2a06:98c1:50::ac40:2394, 108.162.195.148, 162.159.44.148 and 172.64.35.148.

northfieldlab.org - robtex.com