class.systems - dns.ninja

`class.systems`

DNSSEC	⚠️ Not signed
A	2606:4700:20::681a:74^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::681a:174^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::ac43:49c3^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.0.116^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.1.116^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.73.195^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`newt.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3bd4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`newt.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1d4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`newt.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21d4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`newt.ns.cloudflare.com`
		A	108.162.193.212^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.33.212^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	173.245.59.212^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`surina.ns.cloudflare.com`
		A	2606:4700:50::a29f:2613^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`surina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c213^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`surina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2213^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`surina.ns.cloudflare.com`
		A	108.162.194.19^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`surina.ns.cloudflare.com`
		A	162.159.38.19^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`surina.ns.cloudflare.com`
		A	172.64.34.19^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`surina.ns.cloudflare.com`
MX	`class-systems.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::6^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00406.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::8^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db5pr02cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::b^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-dbbpr03cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::c^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db9pr02cu00204.inbound.protection.outlook.com`
		A	52.101.68.15^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db6pr03cu00107.inbound.protection.outlook.com`
		A	52.101.68.27^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db7pr03cu00503.inbound.protection.outlook.com`
		A	52.101.73.11^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am1pr04cu00103.inbound.protection.outlook.com`
		A	52.101.73.26^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as9pr05cu01302.inbound.protection.outlook.com`
TXT	`MS=ms60998147`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.26.0.116, 104.26.1.116, 172.67.73.195
		IPv6 hints	2606:4700:20::681a:74, 2606:4700:20::681a:174, 2606:4700:20::ac43:49c3
SOA	`newt.ns.cloudflare.com`dns@cloudflare.com serial=2407018860

`systems`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.systems` ⭐
	NS	`v0n1.nic.systems`
	NS	`v0n2.nic.systems`
	NS	`v0n3.nic.systems`
	NS	`v2n0.nic.systems`
	NS	`v2n1.nic.systems`
	SOA	`v0n0.nic.systems`hostmaster@donuts.email serial=1783152689

Subdomains

www.class.systems

Same first word

class.es

class.hr

class.on.ca

class.community

class.agency

class.cn

class.rocks

class.cz

class.com.br

class.la

class.ca

class.solutions

class.com.pe

class.lk

class.edu.vn

class.net.br

class.email

class.pe

class.bg

class.ai

class.business

class.cool

class.ai.in

class.se

class.ly

class.su

class.rs

class.de

class.co

class.am

class.it

class.works

class.systems

class.technology

class.network

class.com.py

class.info

class.do

class.tax

class.world

class.expert

class.co.at

class.msk.ru

class.so

class.report

class.al

class.eu

class.st

class.id

class.biz

class.com.tr

class.gr

class.org

class.us

class.com

class.bet

class.ps

class.edu.pl

class.com.mx

class.dk

class.builders

class.capital

class.watch

class.srl

class.com.cn

class.lv

class.cash

class.management

class.wiki

class.ch

class.com.tw

class.guide

class.kr

class.cc

class.mba

class.tech

class.digital

class.sk

class.run

class.today

class.immo

class.me

class.im

class.cl

class.ma

class.adobeaemcloud.com

class.com.au

class.nl

class.io

class.fr

class.tel

class.net

class.hu

class.ro

class.net.nz

class.co.jp

class.zone

class.no

Similar names

scasl.com

acssl.lu

slacs.org

clssa.net

clssa.co.za

salcs.com

cslsa.com

slacs.com

ascls.com

salcs.org

cssla.org

asslc.fr

clssa.com

lcass.com

slcas.org

sacsl.co

acssl.org

scals.cn

calss.com

scsla.org

clsas.com

ssacl.com

slcsa.co.za

slcas.on.ca

cassl.org

ascls.org

lsasc.org

slacs.de

clssa.info

lscas.com

scals.de

clssa.org

scsla.com

scals.co.jp

sacsl.es

ascsl.com

acssl.campaign.gov.uk

aslcs.com

scals.com

lscsa.com

lcsas.us

lcssa.com

lssac.com

slacs.ca

lsasc.com

cssla.com

slsca.com

sslca.com

ascsl.net

sscal.com

aclss.com

ssalc.org

saslc.com

casls.com

acssl.com

salsc.com

alscs.com

calss.net.cn

lscsa.de

lacss.org

DNS History

14 records (9 active, 5 former)

●NSnewt.ns.cloudflare.com2026-02-15 → 2026-07-04 · 3 obs

○ 2016-12-10 20:44:00
● 2026-02-15 15:07:22
● 2026-07-04 08:48:52

○NSns1.livedns.co.uk2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:44:00
○ 2026-02-15 15:07:22
○ 2026-07-04 08:48:52

○NSns2.livedns.co.uk2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:44:00
○ 2026-02-15 15:07:22
○ 2026-07-04 08:48:52

○NSns3.livedns.co.uk2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:44:00
○ 2026-02-15 15:07:22
○ 2026-07-04 08:48:52

●NSsurina.ns.cloudflare.com2026-02-15 → 2026-07-04 · 3 obs

○ 2016-12-10 20:44:00
● 2026-02-15 15:07:22
● 2026-07-04 08:48:52

●MXclass-systems.mail.protection.outlook.com2026-02-15 → 2026-07-04 · 3 obs

○ 2016-12-10 20:44:00
● 2026-02-15 15:07:22
● 2026-07-04 08:48:52

○MXmailserver.class.systems2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:44:00
○ 2026-02-15 15:07:22
○ 2026-07-04 08:48:52

●A104.26.0.1162026-02-15 → 2026-07-04 · 3 obs

○ 2016-12-10 20:44:00
● 2026-02-15 15:07:22
● 2026-07-04 08:48:52

●A104.26.1.1162026-02-15 → 2026-07-04 · 3 obs

○ 2016-12-10 20:44:00
● 2026-02-15 15:07:22
● 2026-07-04 08:48:52

●A172.67.73.1952026-02-15 → 2026-07-04 · 3 obs

○ 2016-12-10 20:44:00
● 2026-02-15 15:07:22
● 2026-07-04 08:48:52

○A213.171.195.1052016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:44:00
○ 2026-02-15 15:07:22
○ 2026-07-04 08:48:52

●A2606:4700:20::681a:1742026-02-15 → 2026-07-04 · 3 obs

○ 2016-12-10 20:44:00
● 2026-02-15 15:07:22
● 2026-07-04 08:48:52

●A2606:4700:20::681a:742026-02-15 → 2026-07-04 · 3 obs

○ 2016-12-10 20:44:00
● 2026-02-15 15:07:22
● 2026-07-04 08:48:52

●A2606:4700:20::ac43:49c32026-02-15 → 2026-07-04 · 3 obs

○ 2016-12-10 20:44:00
● 2026-02-15 15:07:22
● 2026-07-04 08:48:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
systems	v0n0.nic.systems, v0n1.nic.systems, v0n2.nic.systems, v0n3.nic.systems...	12 records
class.systems	surina.ns.cloudflare.com, newt.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.34.19

NS records: surina.ns.cloudflare.com, newt.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for class.systems (unsigned zone)

⏱️ Timing

Total: 2253ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`104.26.0.116, 104.26.1.116...`
AAAA	3	`2606:4700:20::ac43:49c3, 2606:4700:20::681a:74...`
NS	2	`newt.ns.cloudflare.com, surina.ns.cloudflare.com`
MX	1	`class-systems.mail.protection.outlook.co`
TXT	2	`MS=ms60998147, v=spf1 include:spf.protection.outlook.co`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`newt.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.systems, v0n1.nic.systems, v0n2.nic.systems...)

Analysis

Hierarchy

The domain www.class.systems falls under the parent class.systems.

IP Addresses

class.systems resolves to 6 IP numbers: 104.26.0.116, 104.26.1.116, 172.67.73.195 and 3 other.

Additional host names — rollergrill-international.com, hailto.com, xn--vadrdenvrd-s5af.se and two others — share IP numbers with class.systems.

Name Servers

Two name servers handle the delegation for class.systems: newt.ns.cloudflare.com and surina.ns.cloudflare.com.

class.systems shares its name server setup with other domains, including linjunkai.com, donbot.net, cryheart.com and two others.

At least some of class.systems's name servers are shared with other domains, for example debijenkorf.nl, sidebarr.org, securityrouter.org and two more.

These name servers tend to be used in conjunction with the name servers shubhi.ns.cloudflare.com.

Host names with 6 IP numbers:

newt.ns.cloudflare.com resolves to 108.162.193.212, 172.64.33.212 and 173.245.59.212 among others, with 3 other IP addresses in total.

surina.ns.cloudflare.com resolves to 108.162.194.19, 162.159.38.19 and 172.64.34.19 among others, with 3 other IP addresses in total.

Mail Servers

class.systems has one mail server: class-systems.mail.protection.outlook.com.

class-systems.mail.protection.outlook.com points to 8 IP numbers: 52.101.68.15, 52.101.68.27, 52.101.73.11 and 5 other.