class.com.tw - dns.ninja

`class.com.tw`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:3773^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:93a0^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.55.115^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.147.160^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`lana.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3ab6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lana.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0b6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lana.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20b6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lana.ns.cloudflare.com`
		A	108.162.192.182^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lana.ns.cloudflare.com`
		A	172.64.32.182^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lana.ns.cloudflare.com`
		A	173.245.58.182^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lana.ns.cloudflare.com`
NS	`nick.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bd5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nick.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1d5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nick.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21d5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nick.ns.cloudflare.com`
		A	108.162.193.213^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nick.ns.cloudflare.com`
		A	172.64.33.213^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nick.ns.cloudflare.com`
		A	173.245.59.213^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nick.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.55.115, 172.67.147.160
		IPv6 hints	2606:4700:3030::6815:3773, 2606:4700:3036::ac43:93a0
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=220, name=cloudflare-ech.com
SOA	`lana.ns.cloudflare.com`dns@cloudflare.com serial=2406405431

`com.tw`

	DNSSEC	⚠️ Not signed
	NS	`a.twnic.net.tw` ⭐
	NS	`anytld.apnic.net`
	NS	`b.twnic.net.tw`
	NS	`c.twnic.net.tw`
	NS	`d.twnic.net.tw`
	NS	`e.twnic.net.tw`
	NS	`f.twnic.net.tw`
	NS	`g.twnic.net.tw`
	NS	`h.dns.tw`
	NS	`h.twnic.net.tw`
	SOA	`a.twnic.net.tw`snw@twnic.net.tw serial=2006387434

WOT: SAFE (69/100)
WOT: SAFE (58/100)

Subdomains

www.class.com.tw

Same first word

class.guide

class.kr

class.cc

class.is

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

class.es

class.hr

class.on.ca

class.community

class.agency

class.cn

class.rocks

class.cz

class.com.br

class.estate

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.tools

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

Similar names

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

slacs.net

DNS History

16 records (6 active, 10 former)

●NSlana.ns.cloudflare.com2026-03-26 → 2026-07-30 · 3 obs

○ 2015-07-12 07:34:26
● 2026-03-26 09:59:30
● 2026-07-30 21:23:38

●NSnick.ns.cloudflare.com2026-03-26 → 2026-07-30 · 3 obs

○ 2015-07-12 07:34:26
● 2026-03-26 09:59:30
● 2026-07-30 21:23:38

○NSns1.jw72.com.tw2008-11-03 → 2008-11-03 · 3 obs

● 2008-11-03 04:07:04
○ 2015-07-12 07:34:26
○ 2026-07-30 21:23:38

○NSns2.jw72.com.tw2008-11-03 → 2008-11-03 · 3 obs

● 2008-11-03 04:07:04
○ 2015-07-12 07:34:26
○ 2026-07-30 21:23:38

○MXmail.class.com.tw2008-11-03 → 2008-11-03 · 3 obs

● 2008-11-03 04:07:04
○ 2015-07-12 07:34:26
○ 2026-07-30 21:23:38

●A104.21.55.1152026-03-26 → 2026-07-30 · 8 obs

○ 2015-07-12 07:34:26
● 2026-03-26 09:59:30
● 2026-06-08 19:46:14
○ 2026-06-10 19:52:46
○ 2026-06-11 15:58:58
● 2026-06-18 11:57:16
○ 2026-07-23 08:32:02
● 2026-07-30 21:23:38

●A172.67.147.1602026-03-26 → 2026-07-30 · 8 obs

○ 2015-07-12 07:34:26
● 2026-03-26 09:59:30
● 2026-06-08 19:46:14
○ 2026-06-10 19:52:46
○ 2026-06-11 15:58:58
● 2026-06-18 11:57:16
○ 2026-07-23 08:32:02
● 2026-07-30 21:23:38

○A188.114.96.02026-06-10 → 2026-07-23 · 7 obs

○ 2026-03-26 09:59:30
○ 2026-06-08 19:46:14
● 2026-06-10 19:52:46
● 2026-06-11 15:58:58
○ 2026-06-18 11:57:16
● 2026-07-23 08:32:02
○ 2026-07-30 21:23:38

○A188.114.97.02026-06-10 → 2026-07-23 · 7 obs

○ 2026-03-26 09:59:30
○ 2026-06-08 19:46:14
● 2026-06-10 19:52:46
● 2026-06-11 15:58:58
○ 2026-06-18 11:57:16
● 2026-07-23 08:32:02
○ 2026-07-30 21:23:38

○A203.66.143.1682008-11-03 → 2008-11-03 · 3 obs

● 2008-11-03 04:07:04
○ 2015-07-12 07:34:26
○ 2026-07-30 21:23:38

●A2606:4700:3030::6815:37732026-07-22 → 2026-07-30 · 4 obs

○ 2026-06-18 11:57:16
● 2026-07-22 13:19:48
○ 2026-07-23 08:32:02
● 2026-07-30 21:23:38

○A2606:4700:3032::ac43:93a02026-03-26 → 2026-06-18 · 8 obs

○ 2015-07-12 07:34:26
● 2026-03-26 09:59:30
● 2026-06-08 19:46:14
○ 2026-06-10 19:52:46
○ 2026-06-11 15:58:58
● 2026-06-18 11:57:16
○ 2026-07-22 13:19:48
○ 2026-07-30 21:23:38

○A2606:4700:3034::6815:37732026-03-26 → 2026-06-18 · 8 obs

○ 2015-07-12 07:34:26
● 2026-03-26 09:59:30
● 2026-06-08 19:46:14
○ 2026-06-10 19:52:46
○ 2026-06-11 15:58:58
● 2026-06-18 11:57:16
○ 2026-07-22 13:19:48
○ 2026-07-30 21:23:38

●A2606:4700:3036::ac43:93a02026-07-22 → 2026-07-30 · 4 obs

○ 2026-06-18 11:57:16
● 2026-07-22 13:19:48
○ 2026-07-23 08:32:02
● 2026-07-30 21:23:38

○A2a06:98c1:3120::2026-06-10 → 2026-07-23 · 7 obs

○ 2026-03-26 09:59:30
○ 2026-06-08 19:46:14
● 2026-06-10 19:52:46
● 2026-06-11 15:58:58
○ 2026-06-18 11:57:16
● 2026-07-23 08:32:02
○ 2026-07-30 21:23:38

○A2a06:98c1:3121::2026-06-10 → 2026-07-23 · 7 obs

○ 2026-03-26 09:59:30
○ 2026-06-08 19:46:14
● 2026-06-10 19:52:46
● 2026-06-11 15:58:58
○ 2026-06-18 11:57:16
● 2026-07-23 08:32:02
○ 2026-07-30 21:23:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com.tw	h.dns.tw, h.twnic.net.tw, d.twnic.net.tw, e.twnic.net.tw...	-
class.com.tw	nick.ns.cloudflare.com, lana.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.213

NS records: nick.ns.cloudflare.com, lana.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for com.tw (unsigned zone)

⏱️ Timing

Total: 428ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.147.160, 104.21.55.115`
AAAA	2	`2606:4700:3036::ac43:93a0, 2606:4700:3030::6815:3773`
NS	2	`lana.ns.cloudflare.com, nick.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`lana.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

The domain www.class.com.tw falls under the parent class.com.tw.

IP Addresses

class.com.tw points to the four IP addresses 104.21.55.115, 172.67.147.160, 2606:4700:3030::6815:3773 and 2606:4700:3036::ac43:93a0.

Two other host names, along with bristolopenwater.co.uk, 8268bb.net and base-msg.email, also share IP numbers with class.com.tw.

Name Servers

class.com.tw is delegated to two name servers: lana.ns.cloudflare.com and nick.ns.cloudflare.com.

class.com.tw shares its NS records with other domains, for example pocketknifeonline.com, mech.am, mecham.net and two others.

At least some of class.com.tw's name servers are shared with other domains, for example marquage-moderne.fr, holytrinityspringfield.org.uk, estate.am and two more.

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

DNS names with 6 IP addresses:

lana.ns.cloudflare.com resolves to 108.162.192.182, 172.64.32.182, 173.245.58.182 and 3 other IP addresses.

nick.ns.cloudflare.com resolves to 108.162.193.213, 172.64.33.213, 173.245.59.213 and 3 other IP addresses.