ctflearn.com - dns.ninja

`ctflearn.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:9db2^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:e25^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.14.37^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.157.178^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`fred.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b71^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`fred.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c171^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`fred.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2171^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`fred.ns.cloudflare.com`
		A	108.162.193.113^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`fred.ns.cloudflare.com`
		A	172.64.33.113^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`fred.ns.cloudflare.com`
		A	173.245.59.113^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`fred.ns.cloudflare.com`
NS	`nina.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a88^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c088^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2088^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nina.ns.cloudflare.com`
		A	108.162.192.136^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nina.ns.cloudflare.com`
		A	172.64.32.136^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nina.ns.cloudflare.com`
		A	173.245.58.136^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nina.ns.cloudflare.com`
MX	`mx1.privateemail.com` ⭐
		A	162.255.118.7^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`mx1.privateemail.com`
MX	`mx2.privateemail.com` ⭐
		A	162.255.118.8^{🇺🇸 NAMCHEAP-PH162.255.118.0/24 Namecheap, Inc. 11400 W. Olympic Blvd. Suite 200 Los Angeles, CA 90064 UNITED STATES}
			PTR	`mx2.privateemail.com`
TXT	`google-site-verification=c2ZlyDiwO5tjU77wgvCpx76_fSKKDKYiPtw3ks3HiHA`
TXT	`v=spf1 include:spf.privateemail.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.14.37, 172.67.157.178
		IPv6 hints	2606:4700:3032::ac43:9db2, 2606:4700:3037::6815:e25
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=119, name=cloudflare-ech.com
SOA	`fred.ns.cloudflare.com`dns@cloudflare.com serial=2411817678

`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=1786527639

rank #272950 globally
rank #111282 in the tld

Subdomains

web.ctflearn.com

www.ctflearn.com

gobustme.ctflearn.com

Same first word

ctflearn.com

Similar names

fcentral.com

lancertf.com

fcentral.com.ar

fcentral.de

fcentral.com.pe

centralf.com

fcrental.com

tracflne.com

cfrental.cl

crafteln.de

lencraft.net

cfrental.com

learncft.com

lencraft.com

nfcalert.com

DNS History

18 records (8 active, 10 former)

●NSfred.ns.cloudflare.com2016-12-17 → 2026-08-12 · 2 obs

● 2016-12-17 13:06:52
● 2026-08-12 09:59:24

●NSnina.ns.cloudflare.com2016-12-17 → 2026-08-12 · 2 obs

● 2016-12-17 13:06:52
● 2026-08-12 09:59:24

●MXmx1.privateemail.com2021-05-22 → 2026-08-12 · 2 obs

● 2021-05-22 04:18:06
● 2026-08-12 09:59:24

●MXmx2.privateemail.com2021-05-22 → 2026-08-12 · 2 obs

● 2021-05-22 04:18:06
● 2026-08-12 09:59:24

●A104.21.14.372026-02-18 → 2026-08-12 · 3 obs

○ 2021-06-19 22:25:02
● 2026-02-18 18:59:52
● 2026-08-12 09:59:24

○A104.21.27.1552021-05-22 → 2021-06-19 · 5 obs

○ 2016-12-17 13:06:52
● 2021-05-22 04:18:06
● 2021-06-19 22:25:02
○ 2026-02-18 18:59:52
○ 2026-08-12 09:59:24

○A104.31.66.792016-12-17 → 2016-12-17 · 3 obs

● 2016-12-17 13:06:52
○ 2021-05-22 04:18:06
○ 2026-08-12 09:59:24

○A104.31.67.792016-12-17 → 2016-12-17 · 3 obs

● 2016-12-17 13:06:52
○ 2021-05-22 04:18:06
○ 2026-08-12 09:59:24

○A172.67.142.2482021-05-22 → 2021-06-19 · 5 obs

○ 2016-12-17 13:06:52
● 2021-05-22 04:18:06
● 2021-06-19 22:25:02
○ 2026-02-18 18:59:52
○ 2026-08-12 09:59:24

●A172.67.157.1782026-02-18 → 2026-08-12 · 3 obs

○ 2021-06-19 22:25:02
● 2026-02-18 18:59:52
● 2026-08-12 09:59:24

○A2400:cb00:2048:1::681f:424f2016-12-17 → 2016-12-17 · 3 obs

● 2016-12-17 13:06:52
○ 2021-05-22 04:18:06
○ 2026-08-12 09:59:24

○A2400:cb00:2048:1::681f:434f2016-12-17 → 2016-12-17 · 3 obs

● 2016-12-17 13:06:52
○ 2021-05-22 04:18:06
○ 2026-08-12 09:59:24

○A2606:4700:3032::ac43:8ef82021-05-22 → 2021-06-19 · 5 obs

○ 2016-12-17 13:06:52
● 2021-05-22 04:18:06
● 2021-06-19 22:25:02
○ 2026-02-18 18:59:52
○ 2026-08-12 09:59:24

●A2606:4700:3032::ac43:9db22026-07-07 → 2026-08-12 · 3 obs

○ 2026-06-18 06:59:34
● 2026-07-07 22:51:10
● 2026-08-12 09:59:24

○A2606:4700:3034::6815:e252026-02-18 → 2026-06-18 · 5 obs

○ 2021-06-19 22:25:02
● 2026-02-18 18:59:52
● 2026-06-18 06:59:34
○ 2026-07-07 22:51:10
○ 2026-08-12 09:59:24

○A2606:4700:3035::6815:1b9b2021-05-22 → 2021-06-19 · 5 obs

○ 2016-12-17 13:06:52
● 2021-05-22 04:18:06
● 2021-06-19 22:25:02
○ 2026-02-18 18:59:52
○ 2026-08-12 09:59:24

○A2606:4700:3036::ac43:9db22026-02-18 → 2026-06-18 · 5 obs

○ 2021-06-19 22:25:02
● 2026-02-18 18:59:52
● 2026-06-18 06:59:34
○ 2026-07-07 22:51:10
○ 2026-08-12 09:59:24

●A2606:4700:3037::6815:e252026-07-07 → 2026-08-12 · 3 obs

○ 2026-06-18 06:59:34
● 2026-07-07 22:51:10
● 2026-08-12 09:59:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, l.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net...	-
ctflearn.com	fred.ns.cloudflare.com, nina.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.136

NS records: fred.ns.cloudflare.com, nina.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctflearn.com (unsigned zone)

⏱️ Timing

Total: 134ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.157.178, 104.21.14.37`
AAAA	2	`2606:4700:3032::ac43:9db2, 2606:4700:3037::6815:e25`
NS	2	`fred.ns.cloudflare.com, nina.ns.cloudflare.com`
MX	2	`mx1.privateemail.com (pri: 10), mx2.privateemail.com (pri: 10)`
TXT	2	`google-site-verification=c2ZlyDiwO5tjU77, v=spf1 include:spf.privateemail.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`fred.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

ctflearn.com sits above web.ctflearn.com, www.ctflearn.com and gobustme.ctflearn.com in the domain hierarchy.

IP Addresses

ctflearn.com points to the four IP addresses 104.21.14.37, 172.67.157.178, 2606:4700:3032::ac43:9db2 and 2606:4700:3037::6815:e25.

Additional host names — bauer-reif-dental.de, lawyers-law.com, www.shxysczs.com and two others — share IP numbers with ctflearn.com.

Name Servers

ctflearn.com is delegated to two name servers: fred.ns.cloudflare.com and nina.ns.cloudflare.com.

ctflearn.com shares its name server setup with other domains, including 33ee.cc, 333u.bet, orangenose.com and two others.

There is at least partial name server overlap between ctflearn.com and other domains — transindia.net, psiphontoday.com, smartspincentral.com and two more among them.

These name servers frequently co-occur with the name servers fatima.ns.cloudflare.com and cecelia.ns.cloudflare.com.

Host names with 6 IP numbers:

fred.ns.cloudflare.com resolves to 108.162.193.113, 172.64.33.113, 173.245.59.113 and 3 other IP addresses.

nina.ns.cloudflare.com resolves to 108.162.192.136, 172.64.32.136, 173.245.58.136 and 3 other IP addresses.

Mail Servers

ctflearn.com has two mail servers: mx1.privateemail.com and mx2.privateemail.com.

ctflearn.com shares the same mail server setup as other domains, including amazon-acquisitions.com, doovue.com, iost-inc.com and two others.

ctflearn.com shares mail servers with at least some other domains, such as dealmist.com, soowash.com and mymaternalmind.com.

mx1.privateemail.com → 162.255.118.7 and mx2.privateemail.com → 162.255.118.8: one IP number per host name.