`blackjackclassroom.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:da6d^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:434c^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.67.76^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.218.109^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`art.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b66^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`art.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c166^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`art.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2166^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`art.ns.cloudflare.com`
		A	108.162.193.102^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ip-108-162-193-102.defastlink.net`
		A	172.64.33.102^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ip-172-64-33-102.defastlink.net`
		A	173.245.59.102^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ip-173-245-59-102.defastlink.net`
NS	`lucy.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a85^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lucy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c085^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lucy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2085^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lucy.ns.cloudflare.com`
		A	108.162.192.133^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lucy.ns.cloudflare.com`
		A	172.64.32.133^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lucy.ns.cloudflare.com`
		A	173.245.58.133^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lucy.ns.cloudflare.com`
MX	`mail.blackjackclassroom.com` ⭐
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.67.76, 172.67.218.109
		IPv6	2606:4700:3034::ac43:da6d, 2606:4700:3037::6815:434c
SOA	`art.ns.cloudflare.com`dns@cloudflare.com serial=2398076564

`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=1771291435

rank #640795 globally
rank #288241 in the tld

DNS History

20 records (7 active, 13 former)

●NSart.ns.cloudflare.com2026-03-17 → 2026-03-17 · 2 obs

○ 2020-01-29 17:33:34
● 2026-03-17 23:46:20

●NSlucy.ns.cloudflare.com2026-03-17 → 2026-03-17 · 2 obs

○ 2020-01-29 17:33:34
● 2026-03-17 23:46:20

○NSns1.dreamhost.com2017-03-24 → 2020-01-29 · 4 obs

○ 2016-06-30 21:18:04
● 2017-03-24 21:29:52
● 2020-01-29 17:33:34
○ 2026-03-17 23:46:20

○NSns2.dreamhost.com2017-03-24 → 2020-01-29 · 4 obs

○ 2016-06-30 21:18:04
● 2017-03-24 21:29:52
● 2020-01-29 17:33:34
○ 2026-03-17 23:46:20

○NSns25.domaincontrol.com2008-03-13 → 2008-03-13 · 3 obs

● 2008-03-13 11:52:14
○ 2015-06-03 19:56:14
○ 2026-03-17 23:46:20

○NSns26.domaincontrol.com2008-03-13 → 2008-03-13 · 3 obs

● 2008-03-13 11:52:14
○ 2015-06-03 19:56:14
○ 2026-03-17 23:46:20

○NSns3.dreamhost.com2017-03-24 → 2020-01-29 · 4 obs

○ 2016-06-30 21:18:04
● 2017-03-24 21:29:52
● 2020-01-29 17:33:34
○ 2026-03-17 23:46:20

○NSns3069.hostgator.com2015-06-03 → 2016-06-30 · 5 obs

○ 2008-03-13 11:52:14
● 2015-06-03 19:56:14
● 2016-06-30 21:18:04
○ 2017-03-24 21:29:52
○ 2026-03-17 23:46:20

○NSns3070.hostgator.com2015-06-03 → 2016-06-30 · 5 obs

○ 2008-03-13 11:52:14
● 2015-06-03 19:56:14
● 2016-06-30 21:18:04
○ 2017-03-24 21:29:52
○ 2026-03-17 23:46:20

○NSns8013.hostgator.com2015-06-03 → 2016-06-30 · 5 obs

○ 2008-03-13 11:52:14
● 2015-06-03 19:56:14
● 2016-06-30 21:18:04
○ 2017-03-24 21:29:52
○ 2026-03-17 23:46:20

●MXmail.blackjackclassroom.com2026-03-17 → 2026-03-17 · 2 obs

○ 2017-03-24 21:29:52
● 2026-03-17 23:46:20

○MXmailstore1.secureserver.net2008-03-13 → 2016-06-30 · 4 obs

● 2008-03-13 11:52:14
● 2016-06-30 21:18:04
○ 2017-03-24 21:29:52
○ 2026-03-17 23:46:20

○MXsmtp.secureserver.net2008-03-13 → 2016-06-30 · 4 obs

● 2008-03-13 11:52:14
● 2016-06-30 21:18:04
○ 2017-03-24 21:29:52
○ 2026-03-17 23:46:20

●A104.21.67.762026-03-17 → 2026-03-17 · 2 obs

○ 2020-01-29 17:33:34
● 2026-03-17 23:46:20

●A172.67.218.1092026-03-17 → 2026-03-17 · 2 obs

○ 2020-01-29 17:33:34
● 2026-03-17 23:46:20

○A192.185.16.542015-06-03 → 2016-06-30 · 5 obs

○ 2008-03-13 11:52:14
● 2015-06-03 19:56:14
● 2016-06-30 21:18:04
○ 2017-03-24 21:29:52
○ 2026-03-17 23:46:20

●A2606:4700:3034::ac43:da6d2026-03-17 → 2026-03-17 · 2 obs

○ 2020-01-29 17:33:34
● 2026-03-17 23:46:20

●A2606:4700:3037::6815:434c2026-03-17 → 2026-03-17 · 2 obs

○ 2020-01-29 17:33:34
● 2026-03-17 23:46:20

○A64.202.189.1132008-03-13 → 2008-03-13 · 3 obs

● 2008-03-13 11:52:14
○ 2015-06-03 19:56:14
○ 2026-03-17 23:46:20

○A67.205.29.572017-03-24 → 2020-01-29 · 4 obs

○ 2016-06-30 21:18:04
● 2017-03-24 21:29:52
● 2020-01-29 17:33:34
○ 2026-03-17 23:46:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, a.gtld-servers.net...	-
blackjackclassroom.com	lucy.ns.cloudflare.com, art.ns.cloudflare.com	12 records

✅ Authoritative Response

Server: 108.162.193.102

NS records: lucy.ns.cloudflare.com, art.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for blackjackclassroom.com (unsigned zone)

⏱️ Timing

Total: 102ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.218.109, 104.21.67.76`
AAAA	2	`2606:4700:3037::6815:434c, 2606:4700:3034::ac43:da6d`
NS	2	`art.ns.cloudflare.com, lucy.ns.cloudflare.com`
MX	1	`mail.blackjackclassroom.com (pri: 0)`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`art.ns.cloudflare.com dns.cloudflare.com`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

blackjackclassroom.com resolves to four IPs: 2606:4700:3034::ac43:da6d, 2606:4700:3037::6815:434c, 104.21.67.76 and 172.67.218.109.

Other host names, for instance www.usesoso.top, 7911u.com, yalongcable.com, e.altinbas.com and witamin.ru share IP numbers with blackjackclassroom.com.

Name Servers

blackjackclassroom.com has two name servers: art.ns.cloudflare.com and lucy.ns.cloudflare.com.

blackjackclassroom.com shares the same name server setup as other domains, for example spot.ph, joeaudioproductions.com, vassarcmc.org, prisms.in and erbulut.com.

blackjackclassroom.com shares some name servers with other domains, for example motorparts-online.eu, isppro.net, eurodec.in, jabees.com and winproxy.cz.

These name servers are often used together with cody.ns.cloudflare.com, marge.ns.cloudflare.com and uma.ns.cloudflare.com.

Host names with six IP numbers: art.ns.cloudflare.com points to: 2606:4700:58::adf5:3b66, 2803:f800:50::6ca2:c166, 2a06:98c1:50::ac40:2166, 108.162.193.102, 172.64.33.102 and 173.245.59.102; lucy.ns.cloudflare.com points to: 2606:4700:50::adf5:3a85, 2803:f800:50::6ca2:c085, 2a06:98c1:50::ac40:2085, 108.162.192.133, 172.64.32.133 and 173.245.58.133.

Mail Servers

blackjackclassroom.com is handled by a single mail server, mail.blackjackclassroom.com.

blackjackclassroom.com - robtex.com