`upgroup.cz`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:4f63^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:a9eb^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.79.99^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.169.235^{🇺🇸 Cloudflare172.67.160.0/20 , 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	`ray.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b8a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ray.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c18a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ray.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:218a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ray.ns.cloudflare.com`
		A	108.162.193.138^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ray.ns.cloudflare.com`
		A	172.64.33.138^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ray.ns.cloudflare.com`
		A	173.245.59.138^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ray.ns.cloudflare.com`
MX	`upgroup-cz.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::5^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db3pr0202cu00205.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::2^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am0pr83cu00402.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::7^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am9pr04cu00107.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::f^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00307.inbound.protection.outlook.com`
		A	52.101.68.0^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db3pr0202cu00100.inbound.protection.outlook.com`
		A	52.101.68.32^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db3pr0202cu00200.inbound.protection.outlook.com`
		A	52.101.73.4^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr83cu00404.inbound.protection.outlook.com`
		A	52.101.73.11^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am1pr04cu00103.inbound.protection.outlook.com`
TXT	`MS=ms58010830`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.79.99, 172.67.169.235
		IPv6 hints	2606:4700:3034::6815:4f63, 2606:4700:3035::ac43:a9eb
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=229, name=cloudflare-ech.com
SOA	`dora.ns.cloudflare.com`dns@cloudflare.com serial=2407075493

`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=1783817241

Same first word

upgroup.com.br

upgroup.com

upgroup.company

upgroup.biz

upgroup.ca

upgroup.cz

upgroup.eu

upgroup.live

upgroup.dk

upgroup.net

upgroup.pro

upgroup.ch

upgroup.fr

upgroup.cn

upgroup.de

upgroup.us

upgroup.com.vn

Similar names

pugroup.com

pugroup.it

popguru.com

gurupop.com

pugroup.co.za

groupup.co.uk

groupup.eu

groupup.com.au

groupup.org

groupup.co

groupup.us

grupoup.com

groupup.ca

groupup.com

popguru.co.uk

groupup.me

groupup.io

popguru.ca

groupup.ru

gurupop.net

groupup.net

oppguru.com

grupoup.net

DNS History

15 records (7 active, 8 former)

●NSdora.ns.cloudflare.com2026-06-13 → 2026-07-12 · 3 obs

○ 2017-05-02 03:54:24
● 2026-06-13 08:25:18
● 2026-07-12 01:32:48

○NSns2.blueboard.cz2015-10-31 → 2017-05-02 · 4 obs

● 2015-10-31 01:11:46
● 2017-05-02 03:54:24
○ 2026-06-13 08:25:18
○ 2026-07-12 01:32:48

●NSray.ns.cloudflare.com2026-06-13 → 2026-07-12 · 3 obs

○ 2017-05-02 03:54:24
● 2026-06-13 08:25:18
● 2026-07-12 01:32:48

○NSshinzon.blueboard.cz2015-10-31 → 2017-05-02 · 4 obs

● 2015-10-31 01:11:46
● 2017-05-02 03:54:24
○ 2026-06-13 08:25:18
○ 2026-07-12 01:32:48

○MXjaguar.blueboard.cz2015-10-31 → 2017-05-02 · 4 obs

● 2015-10-31 01:11:46
● 2017-05-02 03:54:24
○ 2026-06-13 08:25:18
○ 2026-07-12 01:32:48

○MXns2.blueboard.cz2015-10-31 → 2017-05-02 · 4 obs

● 2015-10-31 01:11:46
● 2017-05-02 03:54:24
○ 2026-06-13 08:25:18
○ 2026-07-12 01:32:48

●MXupgroup-cz.mail.protection.outlook.com2026-06-13 → 2026-07-12 · 3 obs

○ 2017-05-02 03:54:24
● 2026-06-13 08:25:18
● 2026-07-12 01:32:48

●A104.21.79.992026-06-13 → 2026-07-12 · 3 obs

○ 2017-05-02 03:54:24
● 2026-06-13 08:25:18
● 2026-07-12 01:32:48

●A172.67.169.2352026-06-13 → 2026-07-12 · 3 obs

○ 2017-05-02 03:54:24
● 2026-06-13 08:25:18
● 2026-07-12 01:32:48

○A2001:1528:240::1f2015-10-31 → 2017-05-02 · 4 obs

● 2015-10-31 01:11:46
● 2017-05-02 03:54:24
○ 2026-06-13 08:25:18
○ 2026-07-12 01:32:48

○A217.11.249.1412015-10-31 → 2017-05-02 · 4 obs

● 2015-10-31 01:11:46
● 2017-05-02 03:54:24
○ 2026-06-13 08:25:18
○ 2026-07-12 01:32:48

○A2606:4700:3033::ac43:a9eb2026-06-13 → 2026-06-13 · 3 obs

○ 2017-05-02 03:54:24
● 2026-06-13 08:25:18
○ 2026-07-12 01:32:48

●A2606:4700:3034::6815:4f632026-07-12 → 2026-07-12 · 2 obs

○ 2026-06-13 08:25:18
● 2026-07-12 01:32:48

●A2606:4700:3035::ac43:a9eb2026-07-12 → 2026-07-12 · 2 obs

○ 2026-06-13 08:25:18
● 2026-07-12 01:32:48

○A2606:4700:3037::6815:4f632026-06-13 → 2026-06-13 · 3 obs

○ 2017-05-02 03:54:24
● 2026-06-13 08:25:18
○ 2026-07-12 01:32:48

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:172.64.33.138

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for upgroup.cz (unsigned zone)

⏱️ Timing

Total: 818ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.169.235, 104.21.79.99`
AAAA	2	`2606:4700:3035::ac43:a9eb, 2606:4700:3034::6815:4f63`
NS	2	`dora.ns.cloudflare.com, ray.ns.cloudflare.com`
MX	1	`upgroup-cz.mail.protection.outlook.com (`
TXT	2	`MS=ms58010830, v=spf1 include:spf.protection.outlook.co`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dora.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

upgroup.cz points to the four IP addresses 104.21.79.99, 172.67.169.235, 2606:4700:3034::6815:4f63 and 2606:4700:3035::ac43:a9eb.

pkluck47.top, amd-tech.shop, allegro.pl-oferta-88291.click and two other host names share IP numbers with upgroup.cz.

Name Servers

upgroup.cz has two authoritative name servers — dora.ns.cloudflare.com and ray.ns.cloudflare.com.

upgroup.cz uses the same name servers as several other domains — among them prsnlafk.com, portal501.com, websafecolors.info and two more.

The name servers of upgroup.cz overlap at least partially with those of other domains — among them sportten.com, awesem.nl, toberkel.net and two more.

These name servers commonly appear in combination with the name servers marjory.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

dora.ns.cloudflare.com points to 108.162.192.108, 172.64.32.108, 173.245.58.108 and 3 other IP addresses.

ray.ns.cloudflare.com points to 108.162.193.138, 172.64.33.138, 173.245.59.138 and 3 other IP addresses.

Mail Servers

Mail for upgroup.cz is handled by a single mail server, upgroup-cz.mail.protection.outlook.com.

upgroup-cz.mail.protection.outlook.com resolves to 8 IP addresses — 52.101.68.0, 52.101.68.32, 52.101.73.4 and 5 others.

upgroup.cz - robtex.com

upgroup.cz

cz

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`upgroup.cz`

`cz`