🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`bigthinklearning.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:8969^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:56e0^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.86.224^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.137.105^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`frank.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3ba6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`frank.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1a6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`frank.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21a6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`frank.ns.cloudflare.com`
		A	108.162.193.166^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`frank.ns.cloudflare.com`
		A	172.64.33.166^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`frank.ns.cloudflare.com`
		A	173.245.59.166^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`frank.ns.cloudflare.com`
NS	`liv.ns.cloudflare.com`
		A	2606:4700:50::adf5:3abc^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liv.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0bc^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`liv.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20bc^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`liv.ns.cloudflare.com`
		A	108.162.192.188^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liv.ns.cloudflare.com`
		A	172.64.32.188^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liv.ns.cloudflare.com`
		A	173.245.58.188^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liv.ns.cloudflare.com`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c06::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bg-in-f26.1e100.net`
		A	2607:f8b0:4004:c06::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bg-in-f27.1e100.net`
		A	2607:f8b0:4004:c07::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bc-in-f26.1e100.net`
		A	2607:f8b0:4004:c09::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bh-in-f26.1e100.net`
		A	142.251.16.26^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f26.1e100.net`
		A	142.251.16.27^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f27.1e100.net`
		A	142.251.163.26^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f26.1e100.net`
		A	142.251.163.27^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f27.1e100.net`
		A	142.251.179.27^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f27.1e100.net`
TXT	`google-site-verification=PDaxoN6Kyd8eDS8dK1XJcuXFa3_VF0f-GX75sis5JEg`
TXT	`v=spf1 include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.86.224, 172.67.137.105
		IPv6 hints	2606:4700:3030::ac43:8969, 2606:4700:3033::6815:56e0
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=139, name=cloudflare-ech.com
SOA	`frank.ns.cloudflare.com`dns@cloudflare.com serial=2420104064

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1794636396

Same first word

bigthinklearning.com

Similar names

thinkbiglearning.ngo

thinkbiglearning.net

Previous names

Next names

DNS History

9 records (7 active, 2 former)

●NSfrank.ns.cloudflare.com2026-09-15 → 2026-11-14 · 3 obs

○ 2017-10-18 21:23:24
● 2026-09-15 23:18:58
● 2026-11-14 06:15:58

●NSliv.ns.cloudflare.com2026-09-15 → 2026-11-14 · 3 obs

○ 2017-10-18 21:23:24
● 2026-09-15 23:18:58
● 2026-11-14 06:15:58

○NSns1.afternic.com2016-12-19 → 2016-12-19 · 3 obs

● 2016-12-19 23:07:30
○ 2017-10-18 21:23:24
○ 2026-11-14 06:15:58

●MXsmtp.google.com2026-09-15 → 2026-11-14 · 2 obs

● 2026-09-15 23:18:58
● 2026-11-14 06:15:58

●A104.21.86.2242026-09-15 → 2026-11-14 · 3 obs

○ 2017-10-18 21:23:24
● 2026-09-15 23:18:58
● 2026-11-14 06:15:58

●A172.67.137.1052026-09-15 → 2026-11-14 · 3 obs

○ 2017-10-18 21:23:24
● 2026-09-15 23:18:58
● 2026-11-14 06:15:58

○A184.168.221.1042016-12-19 → 2016-12-19 · 3 obs

● 2016-12-19 23:07:30
○ 2017-10-18 21:23:24
○ 2026-11-14 06:15:58

●A2606:4700:3030::ac43:89692026-09-15 → 2026-11-14 · 3 obs

○ 2017-10-18 21:23:24
● 2026-09-15 23:18:58
● 2026-11-14 06:15:58

●A2606:4700:3033::6815:56e02026-09-15 → 2026-11-14 · 3 obs

○ 2017-10-18 21:23:24
● 2026-09-15 23:18:58
● 2026-11-14 06:15:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net, d.gtld-servers.net...	-
bigthinklearning.com	frank.ns.cloudflare.com, liv.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.166

NS records: frank.ns.cloudflare.com, liv.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bigthinklearning.com (unsigned zone)

⏱️ Timing

Total: 602ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.137.105, 104.21.86.224`
AAAA	2	`2606:4700:3033::6815:56e0, 2606:4700:3030::ac43:8969`
NS	2	`frank.ns.cloudflare.com, liv.ns.cloudflare.com`
MX	1	`smtp.google.com (pri: 1)`
TXT	2	`google-site-verification=PDaxoN6Kyd8eDS8, v=spf1 include:_spf.google.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`frank.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (frank.ns.cloudflare.com, frank.ns.cloudflare.com, frank.ns.cloudflare.com...)

Analysis

IP Addresses

bigthinklearning.com directs to four IP numbers, which are 104.21.86.224, 172.67.137.105, 2606:4700:3030::ac43:8969 and 2606:4700:3033::6815:56e0.

Among the host names that share IP numbers with bigthinklearning.com are kreatifitet.no, lifefocusedwellness.com, edgy.org and two others.

Name Servers

The NS records for bigthinklearning.com delegate to frank.ns.cloudflare.com and liv.ns.cloudflare.com.

bigthinklearning.com has the same name server delegation as a number of other domains, such as passosadvocaciaes.com.br, aminumansur466.workers.dev, vatanparasthamid1366.workers.dev and two more.

There is at least partial name server overlap between bigthinklearning.com and other domains — bingcunliang.workers.dev, fowsra.org, mukeshkumar.cfd and two more among them.

The name servers ashton.ns.cloudflare.com, maleah.ns.cloudflare.com and adrian.ns.cloudflare.com are often found in combination with these name servers.

Host names resolving to 6 IP numbers:

frank.ns.cloudflare.com maps to 108.162.193.166, 172.64.33.166, 173.245.59.166 and 3 additional IP addresses.

liv.ns.cloudflare.com maps to 108.162.192.188, 172.64.32.188, 173.245.58.188 and 3 additional IP addresses.

Mail Servers

bigthinklearning.com routes its mail through a single mail server, smtp.google.com.

bigthinklearning.com has the same mail server arrangement as a number of other domains, for example abhranil.space, spotless-studio.be, itscantabria.es and two more.

bigthinklearning.com and a number of other domains — kaprinay.com, stkieran.com, getreilwealthdirect.com and bauplast.com.co among them — share at least some of the same mail servers.

smtp.google.com directs to 9 IP numbers, including 142.251.16.26, 142.251.16.27 and 142.251.163.26, along with 6 other.

bigthinklearning.com - robtex.com