`chemtutor.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::6815:a52^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:90f0^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.10.82^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.144.240^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ian.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b76^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ian.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c176^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ian.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2176^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ian.ns.cloudflare.com`
		A	108.162.193.118^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ian.ns.cloudflare.com`
		A	172.64.33.118^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ian.ns.cloudflare.com`
		A	173.245.59.118^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ian.ns.cloudflare.com`
NS	`simone.ns.cloudflare.com`
		A	2606:4700:50::a29f:261a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`simone.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c21a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`simone.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:221a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`simone.ns.cloudflare.com`
		A	108.162.194.26^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`simone.ns.cloudflare.com`
		A	162.159.38.26^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`simone.ns.cloudflare.com`
		A	172.64.34.26^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`simone.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.10.82, 172.67.144.240
		IPv6 hints	2606:4700:3036::6815:a52, 2606:4700:3036::ac43:90f0
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=19, name=cloudflare-ech.com
SOA	`ian.ns.cloudflare.com`dns@cloudflare.com serial=2400945549

`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=1777051416

WOT: SAFE (90/100)

Same first word

chemtutor.com

Similar names

thermocut.no

thermocut.com

techtumor.com

touchterm.com

tumortech.com

DNS History

14 records (6 active, 8 former)

○NSdns1.earthlink.net2015-08-17 → 2017-03-27 · 4 obs

● 2015-08-17 04:53:32
● 2017-03-27 06:59:02
○ 2026-04-14 07:14:12
○ 2026-04-24 17:27:38

○NSdns2.earthlink.net2015-08-17 → 2017-03-27 · 4 obs

● 2015-08-17 04:53:32
● 2017-03-27 06:59:02
○ 2026-04-14 07:14:12
○ 2026-04-24 17:27:38

○NSdns3.earthlink.net2015-08-17 → 2017-03-27 · 4 obs

● 2015-08-17 04:53:32
● 2017-03-27 06:59:02
○ 2026-04-14 07:14:12
○ 2026-04-24 17:27:38

●NSian.ns.cloudflare.com2026-04-14 → 2026-04-24 · 3 obs

○ 2017-03-27 06:59:02
● 2026-04-14 07:14:12
● 2026-04-24 17:27:38

●NSsimone.ns.cloudflare.com2026-04-14 → 2026-04-24 · 3 obs

○ 2017-03-27 06:59:02
● 2026-04-14 07:14:12
● 2026-04-24 17:27:38

○MXmx1c38.carrierzone.com2015-08-17 → 2017-03-27 · 4 obs

● 2015-08-17 04:53:32
● 2017-03-27 06:59:02
○ 2026-04-14 07:14:12
○ 2026-04-24 17:27:38

○MXmx2c38.carrierzone.com2015-08-17 → 2017-03-27 · 4 obs

● 2015-08-17 04:53:32
● 2017-03-27 06:59:02
○ 2026-04-14 07:14:12
○ 2026-04-24 17:27:38

○MXmx3c38.carrierzone.com2015-08-17 → 2017-03-27 · 4 obs

● 2015-08-17 04:53:32
● 2017-03-27 06:59:02
○ 2026-04-14 07:14:12
○ 2026-04-24 17:27:38

○MXmx4c38.carrierzone.com2015-08-17 → 2017-03-27 · 4 obs

● 2015-08-17 04:53:32
● 2017-03-27 06:59:02
○ 2026-04-14 07:14:12
○ 2026-04-24 17:27:38

●A104.21.10.822026-04-14 → 2026-04-24 · 3 obs

○ 2017-03-27 06:59:02
● 2026-04-14 07:14:12
● 2026-04-24 17:27:38

●A172.67.144.2402026-04-14 → 2026-04-24 · 3 obs

○ 2017-03-27 06:59:02
● 2026-04-14 07:14:12
● 2026-04-24 17:27:38

●A2606:4700:3036::6815:a522026-04-14 → 2026-04-24 · 3 obs

○ 2017-03-27 06:59:02
● 2026-04-14 07:14:12
● 2026-04-24 17:27:38

●A2606:4700:3036::ac43:90f02026-04-14 → 2026-04-24 · 3 obs

○ 2017-03-27 06:59:02
● 2026-04-14 07:14:12
● 2026-04-24 17:27:38

○A66.175.58.92015-08-17 → 2017-03-27 · 4 obs

● 2015-08-17 04:53:32
● 2017-03-27 06:59:02
○ 2026-04-14 07:14:12
○ 2026-04-24 17:27:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, c.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net...	-
chemtutor.com	ian.ns.cloudflare.com, simone.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.118

NS records: ian.ns.cloudflare.com, simone.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for chemtutor.com (unsigned zone)

⏱️ Timing

Total: 99ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.10.82, 172.67.144.240`
AAAA	2	`2606:4700:3036::6815:a52, 2606:4700:3036::ac43:90f0`
NS	2	`ian.ns.cloudflare.com, simone.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`ian.ns.cloudflare.com dns.cloudflare.com`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

chemtutor.com points to four IP numbers: 2606:4700:3036::6815:a52, 2606:4700:3036::ac43:90f0, 104.21.10.82 and 172.67.144.240.

Other host names, for instance virtualbean.com, lacapilladelabolsa.com, www.ccaidaho.org, day-xaman.app and dokamen.cz share IP numbers with chemtutor.com.

Name Servers

chemtutor.com's delegation is to two name servers ian.ns.cloudflare.com and simone.ns.cloudflare.com.

chemtutor.com shares the same name server configuration as other domains, such as cinogel.com, sharedtalk.com, e-rosettastone.com, algebrahelp.com and tellmemoreeducation.com.

chemtutor.com at least partially shares its name servers with other domains, for instance radiopaddock.com, oelking.de, fundestic.es, 8d2c3bf.com and u--0.com.

These name servers are commonly used with lily.ns.cloudflare.com, stevie.ns.cloudflare.com and meera.ns.cloudflare.com.

Host names with six IP numbers:

ian.ns.cloudflare.com points to: 2606:4700:58::adf5:3b76, 2803:f800:50::6ca2:c176, 2a06:98c1:50::ac40:2176, 108.162.193.118, 172.64.33.118 and 173.245.59.118.

simone.ns.cloudflare.com points to: 2606:4700:50::a29f:261a, 2803:f800:50::6ca2:c21a, 2a06:98c1:50::ac40:221a, 108.162.194.26, 162.159.38.26 and 172.64.34.26.

chemtutor.com - robtex.com

chemtutor.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

`chemtutor.com`

`com`