classb.com - dns.ninja

`classb.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:e4e^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::ac43:caa6^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.14.78^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.202.166^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cheryl.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a53^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cheryl.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c053^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cheryl.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2053^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cheryl.ns.cloudflare.com`
		A	108.162.192.83^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cheryl.ns.cloudflare.com`
		A	172.64.32.83^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cheryl.ns.cloudflare.com`
		A	173.245.58.83^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cheryl.ns.cloudflare.com`
NS	`yoxall.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c2f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yoxall.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c32f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`yoxall.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:232f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`yoxall.ns.cloudflare.com`
		A	108.162.195.47^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yoxall.ns.cloudflare.com`
		A	162.159.44.47^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yoxall.ns.cloudflare.com`
		A	172.64.35.47^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`yoxall.ns.cloudflare.com`
MX	`mail2.classb.com` ⭐
		A	35.209.153.198^{🇺🇸 Google35.208.0.0/15}
			PTR	`198.153.209.35.bc.googleusercontent.com`
MX	`mail.classb.com`⁽²⁰⁾
		A	47.206.165.209^{🇺🇸 ASN-ELIX47.206.0.0/16}
			PTR	`mail.classb.com`
TXT	`apple-domain-verification=luAowu0U2Ir3w5ju`
TXT	`facebook-domain-verification=ispy897gd2k7n43uu9ig0g3wwpift9`
TXT	`google-site-verification=SnW5mXOXf3aklZ5a_mLTtfziRs0sVTRjUCXWu1ZxyZ8`
TXT	`v=spf1 ip4:47.206.165.209 ip4:47.206.165.200 include:_spf.bigcommerce.com inc...`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.14.78, 172.67.202.166
		IPv6 hints	2606:4700:3030::6815:e4e, 2606:4700:3031::ac43:caa6
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=84, name=cloudflare-ech.com
SOA	`cheryl.ns.cloudflare.com`dns@cloudflare.com serial=2406401497

`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=1781544420

WOT: SAFE (90/100)
📈 Tranco rank: #907,421

Previously MX for

classb.com

Subdomains

www.classb.com

mail2.classb.com

tradingpost.classb.com

mail.classb.com

Same first word

classb.net

classb.com

classb.org

classb.de

Similar names

sclbsa.org

cslabs.biz

cslabs.tech

scslab.net

ssclab.com

bclass.ru

csslab.net

bcssla.com

sclabs.net

sclabs.co

labcss.com

sclabs.co.nz

csslab.herokuapp.com

ssclab.org

cslabs.ca

csslab.cn

bclass.com.pe

sclabs.blogspot.com

scslab.dk

absslc.org

sclabs.de

sclabs.org

cslabs.net

slabsc.com

sclabs.com

abcssl.com

csslab.com

bcssal.com

cslabs.com

sbcasl.com

cslabs.lk

sclabs.at

sclabs.ir

csslab.ru

bclass.com

scslab.com

cslabs.org

csslab.cl

bclass.com.br

bclass.info

DNS History

21 records (8 active, 13 former)

●NScheryl.ns.cloudflare.com2026-04-11 → 2026-06-15 · 3 obs

○ 2026-03-23 19:51:00
● 2026-04-11 15:24:30
● 2026-06-15 17:37:46

○NSns-cloud-a1.googledomains.com2026-03-23 → 2026-03-23 · 4 obs

○ 2021-04-01 01:34:30
● 2026-03-23 19:51:00
○ 2026-04-11 15:24:30
○ 2026-06-15 17:37:46

○NSns-cloud-a2.googledomains.com2026-03-23 → 2026-03-23 · 4 obs

○ 2021-04-01 01:34:30
● 2026-03-23 19:51:00
○ 2026-04-11 15:24:30
○ 2026-06-15 17:37:46

○NSns-cloud-a3.googledomains.com2026-03-23 → 2026-03-23 · 4 obs

○ 2021-04-01 01:34:30
● 2026-03-23 19:51:00
○ 2026-04-11 15:24:30
○ 2026-06-15 17:37:46

○NSns-cloud-a4.googledomains.com2026-03-23 → 2026-03-23 · 4 obs

○ 2021-04-01 01:34:30
● 2026-03-23 19:51:00
○ 2026-04-11 15:24:30
○ 2026-06-15 17:37:46

○NSns.rackspace.com2007-11-05 → 2021-04-01 · 4 obs

● 2007-11-05 23:43:18
● 2021-04-01 01:34:30
○ 2026-03-23 19:51:00
○ 2026-06-15 17:37:46

○NSns2.rackspace.com2007-11-05 → 2021-04-01 · 4 obs

● 2007-11-05 23:43:18
● 2021-04-01 01:34:30
○ 2026-03-23 19:51:00
○ 2026-06-15 17:37:46

●NSyoxall.ns.cloudflare.com2026-04-11 → 2026-06-15 · 3 obs

○ 2026-03-23 19:51:00
● 2026-04-11 15:24:30
● 2026-06-15 17:37:46

○MXclassb.com2007-11-05 → 2007-11-05 · 3 obs

● 2007-11-05 23:43:18
○ 2015-07-12 21:25:20
○ 2026-06-15 17:37:46

●MXmail.classb.com2026-03-23 → 2026-06-15 · 3 obs

○ 2021-04-01 01:34:30
● 2026-03-23 19:51:00
● 2026-06-15 17:37:46

●MXmail2.classb.com2026-03-23 → 2026-06-15 · 3 obs

○ 2021-04-01 01:34:30
● 2026-03-23 19:51:00
● 2026-06-15 17:37:46

○MXmx1.emailsrvr.com2015-07-12 → 2021-04-01 · 5 obs

○ 2007-11-05 23:43:18
● 2015-07-12 21:25:20
● 2021-04-01 01:34:30
○ 2026-03-23 19:51:00
○ 2026-06-15 17:37:46

○MXmx2.emailsrvr.com2015-07-12 → 2021-04-01 · 5 obs

○ 2007-11-05 23:43:18
● 2015-07-12 21:25:20
● 2021-04-01 01:34:30
○ 2026-03-23 19:51:00
○ 2026-06-15 17:37:46

○A104.130.127.2162021-04-01 → 2021-04-01 · 4 obs

○ 2017-04-04 10:28:00
● 2021-04-01 01:34:30
○ 2026-03-23 19:51:00
○ 2026-06-15 17:37:46

●A104.21.14.782026-04-11 → 2026-06-15 · 3 obs

○ 2026-03-23 19:51:00
● 2026-04-11 15:24:30
● 2026-06-15 17:37:46

○A162.209.78.82015-07-12 → 2017-04-04 · 5 obs

○ 2007-11-05 23:43:18
● 2015-07-12 21:25:20
● 2017-04-04 10:28:00
○ 2021-04-01 01:34:30
○ 2026-06-15 17:37:46

●A172.67.202.1662026-04-11 → 2026-06-15 · 3 obs

○ 2026-03-23 19:51:00
● 2026-04-11 15:24:30
● 2026-06-15 17:37:46

●A2606:4700:3030::6815:e4e2026-04-11 → 2026-06-15 · 3 obs

○ 2026-03-23 19:51:00
● 2026-04-11 15:24:30
● 2026-06-15 17:37:46

●A2606:4700:3031::ac43:caa62026-04-11 → 2026-06-15 · 3 obs

○ 2026-03-23 19:51:00
● 2026-04-11 15:24:30
● 2026-06-15 17:37:46

○A34.57.23.392026-03-23 → 2026-03-23 · 4 obs

○ 2021-04-01 01:34:30
● 2026-03-23 19:51:00
○ 2026-04-11 15:24:30
○ 2026-06-15 17:37:46

○A72.3.144.1932007-11-05 → 2007-11-05 · 3 obs

● 2007-11-05 23:43:18
○ 2015-07-12 21:25:20
○ 2026-06-15 17:37:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
classb.com	cheryl.ns.cloudflare.com, yoxall.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.83

NS records: cheryl.ns.cloudflare.com, yoxall.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classb.com (unsigned zone)

⏱️ Timing

Total: 183ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.14.78, 172.67.202.166`
AAAA	2	`2606:4700:3031::ac43:caa6, 2606:4700:3030::6815:e4e`
NS	2	`cheryl.ns.cloudflare.com, yoxall.ns.cloudflare.com`
MX	2	`mail.classb.com (pri: 10), mail2.classb.com (pri: 20)`
TXT	4	`apple-domain-verification=luAowu0U2Ir3w5, facebook-domain-verification=ispy897gd2k...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cheryl.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

www.classb.com, mail2.classb.com, tradingpost.classb.com and mail.classb.com are all subdomains of classb.com.

IP Addresses

classb.com directs to four IP numbers, which are 104.21.14.78, 172.67.202.166, 2606:4700:3030::6815:e4e and 2606:4700:3031::ac43:caa6.

Two other host names, along with tarjih.id, jintantoys.com and m-ideas.ru, also share IP numbers with classb.com.

Name Servers

classb.com is served by two delegated name servers, cheryl.ns.cloudflare.com and yoxall.ns.cloudflare.com.

classb.com shares its NS records with other domains, for example midpass.ru, tvificcao.com.pt, lets-get-lit.com and two others.

The name servers of classb.com overlap at least partially with those of other domains — among them va27.cn, oneplan.io, encuentraunentrenador.com and two more.

These name servers commonly co-occur with the name servers logan.ns.cloudflare.com, ada.ns.cloudflare.com, marge.ns.cloudflare.com and brenda.ns.cloudflare.com.

DNS names with 6 IP addresses:

cheryl.ns.cloudflare.com carries IP addresses 108.162.192.83, 172.64.32.83 and 173.245.58.83, with 3 other addresses beyond those.

yoxall.ns.cloudflare.com carries IP addresses 108.162.195.47, 162.159.44.47 and 172.64.35.47, with 3 other addresses beyond those.

Mail Servers

classb.com is served by two mail servers, mail2.classb.com and mail.classb.com.

The mail servers for classb.com overlap at least partially with those of other domains, including mail2.classb.com and mail.classb.com.

Both mail2.classb.com and mail.classb.com have a single IP address each — mail2.classb.com resolves to 35.209.153.198 while mail.classb.com resolves to 47.206.165.209.