`teflcourse.net`

DNSSEC	⚠️ Not signed
A	2606:4700:20::681a:68^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::681a:168^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::ac43:4a1c^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.0.104^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.1.104^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.74.28^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`addilyn.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26d9^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`addilyn.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2d9^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`addilyn.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22d9^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`addilyn.ns.cloudflare.com`
		A	108.162.194.217^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`addilyn.ns.cloudflare.com`
		A	162.159.38.217^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`addilyn.ns.cloudflare.com`
		A	172.64.34.217^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`addilyn.ns.cloudflare.com`
NS	`mack.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c25^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mack.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c325^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mack.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2325^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mack.ns.cloudflare.com`
		A	108.162.195.37^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mack.ns.cloudflare.com`
		A	162.159.44.37^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mack.ns.cloudflare.com`
		A	172.64.35.37^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mack.ns.cloudflare.com`
MX	`mail.teflcourse.net` ⭐
		A	169.45.209.101^{🇺🇸 SOFTLAYER169.45.192.0/18 -wdc04}
			PTR	`65.d1.2da9.ip4.static.sl-reverse.com`
TXT	`facebook-domain-verification=tg2lz0tad4vxikb9iz2ljf4jf8mpyk`
TXT	`google-site-verification=JWZH3Wxk2dJPrnfolef_VFHuvY9dtCp8ML_7GsDyYm4`
TXT	`v=spf1 a mx ip4:208.43.238.75/32 ip4:208.43.206.178/32 ip4:184.172.239.130/32...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.26.0.104, 104.26.1.104, 172.67.74.28
		IPv6	2606:4700:20::681a:68, 2606:4700:20::681a:168, 2606:4700:20::ac43:4a1c
SOA	`addilyn.ns.cloudflare.com`dns@cloudflare.com serial=2398190826

`net`

	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=1771291465

rank #333337 globally
rank #9937 in the tld
📈 Tranco rank: #594,554

Subdomains

ns.teflcourse.net

titc18.teflcourse.net

mail.teflcourse.net

Same first word

teflcourse.net

teflcourse.in

teflcourse.co

teflcourse.com

Similar names

reflectous.com

leftsource.org

leftsource.com

elferscout.de

selectfour.com

elferscout.eu

teflsource.com

flutescore.com

elferscout.com

DNS History

16 records (9 active, 7 former)

●NSaddilyn.ns.cloudflare.com2026-02-17 → 2026-03-10 · 3 obs

○ 2016-11-08 18:16:22
● 2026-02-17 22:54:52
● 2026-03-10 14:10:18

●NSmack.ns.cloudflare.com2026-02-17 → 2026-03-10 · 3 obs

○ 2016-11-08 18:16:22
● 2026-02-17 22:54:52
● 2026-03-10 14:10:18

○NSns.teflcourse.net2015-06-19 → 2016-11-08 · 5 obs

● 2015-06-19 12:14:36
○ 2015-11-02 01:54:02
● 2016-11-08 18:16:22
○ 2026-02-17 22:54:52
○ 2026-03-10 14:10:18

○NSns1.teflcorp.net2015-11-02 → 2016-11-08 · 5 obs

○ 2015-06-19 12:14:36
● 2015-11-02 01:54:02
● 2016-11-08 18:16:22
○ 2026-02-17 22:54:52
○ 2026-03-10 14:10:18

○NSns2.teflcorp.net2015-11-02 → 2016-11-08 · 5 obs

○ 2015-06-19 12:14:36
● 2015-11-02 01:54:02
● 2016-11-08 18:16:22
○ 2026-02-17 22:54:52
○ 2026-03-10 14:10:18

○NSns3.tesol-teflcourses.com2015-06-19 → 2015-06-19 · 3 obs

● 2015-06-19 12:14:36
○ 2015-11-02 01:54:02
○ 2026-03-10 14:10:18

○NSns4.tesol-teflcourses.com2015-06-19 → 2015-06-19 · 3 obs

● 2015-06-19 12:14:36
○ 2015-11-02 01:54:02
○ 2026-03-10 14:10:18

●MXmail.teflcourse.net2015-06-19 → 2026-03-10 · 2 obs

● 2015-06-19 12:14:36
● 2026-03-10 14:10:18

●A104.26.0.1042026-02-17 → 2026-03-10 · 3 obs

○ 2016-11-08 18:16:22
● 2026-02-17 22:54:52
● 2026-03-10 14:10:18

●A104.26.1.1042026-02-17 → 2026-03-10 · 3 obs

○ 2016-11-08 18:16:22
● 2026-02-17 22:54:52
● 2026-03-10 14:10:18

●A172.67.74.282026-02-17 → 2026-03-10 · 3 obs

○ 2016-11-08 18:16:22
● 2026-02-17 22:54:52
● 2026-03-10 14:10:18

○A184.173.27.1412015-11-02 → 2016-11-08 · 5 obs

○ 2015-06-19 12:14:36
● 2015-11-02 01:54:02
● 2016-11-08 18:16:22
○ 2026-02-17 22:54:52
○ 2026-03-10 14:10:18

●A2606:4700:20::681a:1682026-02-17 → 2026-03-10 · 3 obs

○ 2016-11-08 18:16:22
● 2026-02-17 22:54:52
● 2026-03-10 14:10:18

●A2606:4700:20::681a:682026-02-17 → 2026-03-10 · 3 obs

○ 2016-11-08 18:16:22
● 2026-02-17 22:54:52
● 2026-03-10 14:10:18

●A2606:4700:20::ac43:4a1c2026-02-17 → 2026-03-10 · 3 obs

○ 2016-11-08 18:16:22
● 2026-02-17 22:54:52
● 2026-03-10 14:10:18

○A75.125.63.32015-06-19 → 2015-06-19 · 3 obs

● 2015-06-19 12:14:36
○ 2015-11-02 01:54:02
○ 2026-03-10 14:10:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
teflcourse.net	addilyn.ns.cloudflare.com, mack.ns.cloudflare.com	-

✅ Authoritative Response

Server: 162.159.38.217

NS records: addilyn.ns.cloudflare.com, mack.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for teflcourse.net (unsigned zone)

⏱️ Timing

Total: 390ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`172.67.74.28, 104.26.1.104...`
AAAA	3	`2606:4700:20::ac43:4a1c, 2606:4700:20::681a:168...`
NS	2	`addilyn.ns.cloudflare.com, mack.ns.cloudflare.com`
MX	1	`mail.teflcourse.net (pri: 10)`
TXT	3	`facebook-domain-verification=tg2lz0tad4v, google-site-verification=JWZH3Wxk2dJPrnf...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`addilyn.ns.cloudflare.com dns.cloudflare`

Analysis

Hierarchy

teflcourse.net is the parent of ns.teflcourse.net, titc18.teflcourse.net and mail.teflcourse.net.

IP Addresses

teflcourse.net resolves to six IP addresses: 2606:4700:20::681a:68, 2606:4700:20::681a:168, 2606:4700:20::ac43:4a1c, 104.26.0.104, 104.26.1.104 and 172.67.74.28.

other host names including www.ikcplay.de, dev1.essential.ai, gratnellsmedical.com, www.nafsa.org and merch.electriclove.at share IP numbers with teflcourse.net.

Name Servers

teflcourse.net is delegated to two name servers addilyn.ns.cloudflare.com and mack.ns.cloudflare.com.

teflcourse.net shares the same name server setup as other domains, for instance abcworld.org, sofy.rs, dolciss.net, tesolcourse.com and teflserver.net.

teflcourse.net at least partially shares name servers with other domains, for instance policyeight.com, ghix-widget.com, intrinsically.info, newcoe.com and texascapitalmerchant.com.

These name servers are commonly used alongside cameron.ns.cloudflare.com and lovisa.ns.cloudflare.com.

Host names with six IP numbers:

Host name addilyn.ns.cloudflare.com points to: 2606:4700:50::a29f:26d9, 2803:f800:50::6ca2:c2d9, 2a06:98c1:50::ac40:22d9, 108.162.194.217, 162.159.38.217 and 172.64.34.217.

Host name mack.ns.cloudflare.com points to: 2606:4700:58::a29f:2c25, 2803:f800:50::6ca2:c325, 2a06:98c1:50::ac40:2325, 108.162.195.37, 162.159.44.37 and 172.64.35.37.

Mail Servers

teflcourse.net is handled by a single mail server, mail.teflcourse.net.

mail.teflcourse.net resolves to IP 169.45.209.101.

teflcourse.net - robtex.com

teflcourse.net

net

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`teflcourse.net`

`net`