`simpsonsweb.cz`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:5bb3^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:b16c^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.91.179^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.177.108^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dora.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a6c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dora.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c06c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dora.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:206c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dora.ns.cloudflare.com`
		A	108.162.192.108^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dora.ns.cloudflare.com`
		A	172.64.32.108^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dora.ns.cloudflare.com`
		A	173.245.58.108^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dora.ns.cloudflare.com`
NS	`eugene.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c48^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`eugene.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c348^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`eugene.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2348^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`eugene.ns.cloudflare.com`
		A	108.162.195.72^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`eugene.ns.cloudflare.com`
		A	162.159.44.72^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`eugene.ns.cloudflare.com`
		A	172.64.35.72^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`eugene.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.91.179, 172.67.177.108
		IPv6 hints	2606:4700:3031::6815:5bb3, 2606:4700:3033::ac43:b16c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=137, name=cloudflare-ech.com
SOA	`dora.ns.cloudflare.com`dns@cloudflare.com serial=2409585459

`cz`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.ns.nic.cz` ⭐
	NS	`b.ns.nic.cz`
	NS	`c.ns.nic.cz`
	NS	`d.ns.nic.cz`
	SOA	`a.ns.nic.cz`hostmaster@nic.cz serial=1784983663

WOT: SAFE (60/100)

Same first word

simpsonsweb.cz

DNS History

25 records (6 active, 19 former)

●NSdora.ns.cloudflare.com2026-07-03 → 2026-07-25 · 3 obs

○ 2017-08-24 12:05:14
● 2026-07-03 22:07:18
● 2026-07-25 13:08:00

●NSeugene.ns.cloudflare.com2026-07-03 → 2026-07-25 · 3 obs

○ 2017-08-24 12:05:14
● 2026-07-03 22:07:18
● 2026-07-25 13:08:00

○NSns.gransy.com2015-06-18 → 2016-09-25 · 4 obs

● 2015-06-18 01:03:42
● 2016-09-25 05:55:32
○ 2017-08-24 12:05:14
○ 2026-07-25 13:08:00

○NSns11.cloudns.net2017-08-24 → 2017-08-24 · 4 obs

○ 2016-09-25 05:55:32
● 2017-08-24 12:05:14
○ 2026-07-03 22:07:18
○ 2026-07-25 13:08:00

○NSns12.cloudns.net2017-08-24 → 2017-08-24 · 4 obs

○ 2016-09-25 05:55:32
● 2017-08-24 12:05:14
○ 2026-07-03 22:07:18
○ 2026-07-25 13:08:00

○NSns13.cloudns.net2017-08-24 → 2017-08-24 · 4 obs

○ 2016-09-25 05:55:32
● 2017-08-24 12:05:14
○ 2026-07-03 22:07:18
○ 2026-07-25 13:08:00

○NSns14.cloudns.net2017-08-24 → 2017-08-24 · 4 obs

○ 2016-09-25 05:55:32
● 2017-08-24 12:05:14
○ 2026-07-03 22:07:18
○ 2026-07-25 13:08:00

○NSns2.gransy.com2015-06-18 → 2016-09-25 · 4 obs

● 2015-06-18 01:03:42
● 2016-09-25 05:55:32
○ 2017-08-24 12:05:14
○ 2026-07-25 13:08:00

○NSns3.gransy.com2015-06-18 → 2016-09-25 · 4 obs

● 2015-06-18 01:03:42
● 2016-09-25 05:55:32
○ 2017-08-24 12:05:14
○ 2026-07-25 13:08:00

○NSns4.gransy.com2015-06-18 → 2016-09-25 · 4 obs

● 2015-06-18 01:03:42
● 2016-09-25 05:55:32
○ 2017-08-24 12:05:14
○ 2026-07-25 13:08:00

○NSns5.gransy.com2015-06-18 → 2016-09-25 · 4 obs

● 2015-06-18 01:03:42
● 2016-09-25 05:55:32
○ 2017-08-24 12:05:14
○ 2026-07-25 13:08:00

○NSpns11.cloudns.net2017-08-24 → 2017-08-24 · 4 obs

○ 2016-09-25 05:55:32
● 2017-08-24 12:05:14
○ 2026-07-03 22:07:18
○ 2026-07-25 13:08:00

○NSpns12.cloudns.net2017-08-24 → 2017-08-24 · 4 obs

○ 2016-09-25 05:55:32
● 2017-08-24 12:05:14
○ 2026-07-03 22:07:18
○ 2026-07-25 13:08:00

○NSpns13.cloudns.net2017-08-24 → 2017-08-24 · 4 obs

○ 2016-09-25 05:55:32
● 2017-08-24 12:05:14
○ 2026-07-03 22:07:18
○ 2026-07-25 13:08:00

○NSpns14.cloudns.net2017-08-24 → 2017-08-24 · 4 obs

○ 2016-09-25 05:55:32
● 2017-08-24 12:05:14
○ 2026-07-03 22:07:18
○ 2026-07-25 13:08:00

○NSpns20.cloudns.net2017-08-24 → 2017-08-24 · 4 obs

○ 2016-09-25 05:55:32
● 2017-08-24 12:05:14
○ 2026-07-03 22:07:18
○ 2026-07-25 13:08:00

○MXmail.simpsonsweb.cz2017-08-24 → 2017-08-24 · 4 obs

○ 2016-09-25 05:55:32
● 2017-08-24 12:05:14
○ 2026-07-03 22:07:18
○ 2026-07-25 13:08:00

○MXs2.netincome.cz2015-06-18 → 2016-04-13 · 4 obs

● 2015-06-18 01:03:42
● 2016-04-13 16:25:44
○ 2016-09-25 05:55:32
○ 2026-07-25 13:08:00

●A104.21.91.1792026-07-03 → 2026-07-25 · 3 obs

○ 2017-08-24 12:05:14
● 2026-07-03 22:07:18
● 2026-07-25 13:08:00

●A172.67.177.1082026-07-03 → 2026-07-25 · 3 obs

○ 2017-08-24 12:05:14
● 2026-07-03 22:07:18
● 2026-07-25 13:08:00

●A2606:4700:3031::6815:5bb32026-07-03 → 2026-07-25 · 3 obs

○ 2017-08-24 12:05:14
● 2026-07-03 22:07:18
● 2026-07-25 13:08:00

●A2606:4700:3033::ac43:b16c2026-07-03 → 2026-07-25 · 3 obs

○ 2017-08-24 12:05:14
● 2026-07-03 22:07:18
● 2026-07-25 13:08:00

○A45.59.121.1802017-08-24 → 2017-08-24 · 4 obs

○ 2016-09-25 05:55:32
● 2017-08-24 12:05:14
○ 2026-07-03 22:07:18
○ 2026-07-25 13:08:00

○A88.86.123.312016-09-25 → 2016-09-25 · 4 obs

○ 2016-04-13 16:25:44
● 2016-09-25 05:55:32
○ 2017-08-24 12:05:14
○ 2026-07-25 13:08:00

○A95.168.193.1422015-06-18 → 2016-04-13 · 4 obs

● 2015-06-18 01:03:42
● 2016-04-13 16:25:44
○ 2016-09-25 05:55:32
○ 2026-07-25 13:08:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz	-
simpsonsweb.cz	eugene.ns.cloudflare.com, dora.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.72

NS records: eugene.ns.cloudflare.com, dora.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for simpsonsweb.cz (unsigned zone)

⏱️ Timing

Total: 1213ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.91.179, 172.67.177.108`
AAAA	2	`2606:4700:3031::6815:5bb3, 2606:4700:3033::ac43:b16c`
NS	2	`dora.ns.cloudflare.com, eugene.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dora.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

simpsonsweb.cz points to the four IP addresses 104.21.91.179, 172.67.177.108, 2606:4700:3031::6815:5bb3 and 2606:4700:3033::ac43:b16c.

Additional host names — automatic.rs, www.sediksi.com, pontogp.com and two others — share IP numbers with simpsonsweb.cz.

Name Servers

simpsonsweb.cz is served by two delegated name servers, dora.ns.cloudflare.com and eugene.ns.cloudflare.com.

simpsonsweb.cz shares its name server setup with other domains, including jackpociak.pro, rollriot.today, briberylibrary.com and two others.

There is at least partial name server overlap between simpsonsweb.cz and other domains — ecem.online, onta.workers.dev, timehonestar.xyz and two more among them.

The name servers major.ns.cloudflare.com, ulla.ns.cloudflare.com and kinsley.ns.cloudflare.com are often found in combination with these name servers.

Host names with 6 IP numbers:

dora.ns.cloudflare.com carries IP addresses 108.162.192.108, 172.64.32.108 and 173.245.58.108, with 3 other addresses beyond those.

eugene.ns.cloudflare.com carries IP addresses 108.162.195.72, 162.159.44.72 and 172.64.35.72, with 3 other addresses beyond those.

simpsonsweb.cz - robtex.com

simpsonsweb.cz

cz

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`simpsonsweb.cz`

`cz`