`bdtcourses.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:3304^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::ac43:d7ac^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.51.4^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.215.172^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`jasmine.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3aaa^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jasmine.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0aa^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jasmine.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20aa^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jasmine.ns.cloudflare.com`
		A	108.162.192.170^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jasmine.ns.cloudflare.com`
		A	172.64.32.170^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jasmine.ns.cloudflare.com`
		A	173.245.58.170^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jasmine.ns.cloudflare.com`
NS	`simon.ns.cloudflare.com`
		A	2606:4700:58::adf5:3be8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`simon.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1e8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`simon.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21e8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`simon.ns.cloudflare.com`
		A	108.162.193.232^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`simon.ns.cloudflare.com`
		A	172.64.33.232^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`simon.ns.cloudflare.com`
		A	173.245.59.232^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`simon.ns.cloudflare.com`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c06::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bg-in-f27.1e100.net`
		A	2607:f8b0:4004:c0b::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bj-in-f26.1e100.net`
		A	2607:f8b0:4004:c0b::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bj-in-f27.1e100.net`
		A	2607:f8b0:4004:c19::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bk-in-f27.1e100.net`
		A	142.250.31.26^{🇺🇸 Google142.250.31.0/24}
			PTR	`bj-in-f26.1e100.net`
		A	142.250.31.27^{🇺🇸 Google142.250.31.0/24}
			PTR	`bj-in-f27.1e100.net`
		A	142.251.111.26^{🇺🇸 Google142.251.111.0/24}
			PTR	`bk-in-f26.1e100.net`
		A	142.251.111.27^{🇺🇸 Google142.251.111.0/24}
			PTR	`bk-in-f27.1e100.net`
		A	172.253.115.27^{🇺🇸 Google172.253.115.0/24}
			PTR	`bg-in-f27.1e100.net`
TXT	`google-site-verification=4RPMXWX-pHyOl3biXRiI7XQe8ELemFAb3jjvevDWMvc`
TXT	`v=spf1 include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.51.4, 172.67.215.172
		IPv6 hints	2606:4700:3032::6815:3304, 2606:4700:3032::ac43:d7ac
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=187, name=cloudflare-ech.com
SOA	`jasmine.ns.cloudflare.com`dns@cloudflare.com serial=2407699425

`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=1785639312

⚠️ On DNS blocklist: tif

Same first word

bdtcourses.com

Similar names

cursodetsb.com.br

cursodetsb.com

codebursts.com

dbtcourses.com

cedrbustos.com

DNS History

11 records (7 active, 4 former)

●NSjasmine.ns.cloudflare.com2026-07-26 → 2026-08-02 · 2 obs

● 2026-07-26 07:18:10
● 2026-08-02 03:24:14

●NSsimon.ns.cloudflare.com2026-07-26 → 2026-08-02 · 2 obs

● 2026-07-26 07:18:10
● 2026-08-02 03:24:14

●MXsmtp.google.com2026-07-26 → 2026-08-02 · 2 obs

● 2026-07-26 07:18:10
● 2026-08-02 03:24:14

●A104.21.51.42026-08-02 → 2026-08-02 · 3 obs

○ 2026-07-26 07:18:10
● 2026-08-02 03:24:12
● 2026-08-02 03:24:14

●A172.67.215.1722026-08-02 → 2026-08-02 · 3 obs

○ 2026-07-26 07:18:10
● 2026-08-02 03:24:12
● 2026-08-02 03:24:14

○A188.114.96.02026-07-26 → 2026-07-26 · 3 obs

● 2026-07-26 07:18:10
○ 2026-08-02 03:24:12
○ 2026-08-02 03:24:14

○A188.114.97.02026-07-26 → 2026-07-26 · 3 obs

● 2026-07-26 07:18:10
○ 2026-08-02 03:24:12
○ 2026-08-02 03:24:14

●A2606:4700:3032::6815:33042026-08-02 → 2026-08-02 · 3 obs

○ 2026-07-26 07:18:10
● 2026-08-02 03:24:12
● 2026-08-02 03:24:14

●A2606:4700:3032::ac43:d7ac2026-08-02 → 2026-08-02 · 3 obs

○ 2026-07-26 07:18:10
● 2026-08-02 03:24:12
● 2026-08-02 03:24:14

○A2a06:98c1:3120::2026-07-26 → 2026-07-26 · 3 obs

● 2026-07-26 07:18:10
○ 2026-08-02 03:24:12
○ 2026-08-02 03:24:14

○A2a06:98c1:3121::2026-07-26 → 2026-07-26 · 3 obs

● 2026-07-26 07:18:10
○ 2026-08-02 03:24:12
○ 2026-08-02 03:24:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, f.gtld-servers.net, m.gtld-servers.net, d.gtld-servers.net...	-
bdtcourses.com	simon.ns.cloudflare.com, jasmine.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.170

NS records: simon.ns.cloudflare.com, jasmine.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bdtcourses.com (unsigned zone)

⏱️ Timing

Total: 111ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.215.172, 104.21.51.4`
AAAA	2	`2606:4700:3032::ac43:d7ac, 2606:4700:3032::6815:3304`
NS	2	`jasmine.ns.cloudflare.com, simon.ns.cloudflare.com`
MX	1	`smtp.google.com (pri: 1)`
TXT	2	`google-site-verification=4RPMXWX-pHyOl3b, v=spf1 include:_spf.google.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`jasmine.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

bdtcourses.com resolves to four IP addresses: 104.21.51.4, 172.67.215.172, 2606:4700:3032::6815:3304 and 2606:4700:3032::ac43:d7ac.

bowmanarts.net, mile.zjasiatop.com, over-ear-headphones-wirel03396.bloggin-ads.com plus two other host names have IP numbers in common with bdtcourses.com.

Name Servers

bdtcourses.com uses two name servers for its delegation: jasmine.ns.cloudflare.com and simon.ns.cloudflare.com.

The name server configuration of bdtcourses.com is shared with other domains, for instance hafteh.ca, mobidevtalk.com, nametags4u.co.uk and two others.

bdtcourses.com has at least partial name server overlap with other domains, such as swissre.tv, kuruma-news.jp, premieraccountingweb.com and two others.

It is common to find these name servers paired with the name servers miles.ns.cloudflare.com.

Hosts with 6 IP addresses each:

Hostname jasmine.ns.cloudflare.com directs to 108.162.192.170, 172.64.32.170 and 173.245.58.170 along with 3 other IP addresses.

Hostname simon.ns.cloudflare.com directs to 108.162.193.232, 172.64.33.232 and 173.245.59.232 along with 3 other IP addresses.

Mail Servers

bdtcourses.com uses one mail server — smtp.google.com.

The mail server setup of bdtcourses.com matches that of other domains such as innovins.com, concernamerica.org, infotask.pl and two others.

At least some of the mail servers used by bdtcourses.com are shared with other domains: s3oai.com, blossomingspeaker.com, surecart.com and two others among them.

It is common to find these mail servers paired with the mail servers aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com, as well as two others.

smtp.google.com has 9 IP addresses: 142.250.31.26, 142.250.31.27, 142.251.111.26 plus 6 more.

bdtcourses.com - robtex.com

bdtcourses.com

com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`bdtcourses.com`

`com`