diff.cz - dns.ninja

`diff.cz`

DNSSEC	🔒 Signed (DS record present)
A	31.15.13.43^{🇨🇿 ACTIVE24-AS31.15.8.0/21 CZ-ACTIVE24-NET2}
		PTR	`unassigned-31.15.13.43.active24.cz`
NS	`ns1.websupport.cz` ⭐
		A	2a10:bbc0::11^{🇨🇿 ACTIVE24-AS2a10:bbc0::/32}
			PTR	`ns1.websupport.eu`
		A	45.10.97.11^{🇨🇿 ACTIVE24-AS45.10.97.0/24}
			PTR	`ns1.websupport.eu`
NS	`ns2.websupport.cz`
		A	2a02:250:3::12^{🇸🇪 ACTIVE24-AS2a02:250:3::/48}
			PTR	`ns2.websupport.eu`
		A	185.71.159.12^{🇸🇪 ACTIVE24-AS185.71.159.0/24}
			PTR	`ns2.websupport.eu`
NS	`ns3.websupport.eu`
		A	2a10:bbc0::13^{🇨🇿 ACTIVE24-AS2a10:bbc0::/32}
			PTR	`ns3.websupport.eu`
		A	45.10.97.13^{🇨🇿 ACTIVE24-AS45.10.97.0/24}
			PTR	`ns3.websupport.eu`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1b::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`wv-in-f26.1e100.net`
		A	172.253.63.26^{🇺🇸 Google172.253.63.0/24}
			PTR	`bi-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`v=spf1 include:_spf.google.com include:clevermonitor.net include:spf.yottly.c...`
SOA	`ns1.websupport.cz`admin@websupport.cz serial=1784269247

`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=1784830659

Same first word

diff.hu

diff.dk

diff.fr

diff.dev

diff.ee

diff.org

diff.si

diff.tech

diff.de

diff.me

diff.so

diff.io

diff.design

diff.sh

diff.ru

diff.nl

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diff.gr

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diff.ltd

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diff.no

diff.pl

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diff.ro

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diff.rent

diff.cn

diff.co.nz

diff.cc

diff.it

diff.im

diff.blog

diff.ie

diff.fi

diff.sk

diff.space

diff.pro

diff.com.br

diff.vn

diff.in

diff.wiki

diff.kr

diff.be

diff.pics

diff.app

diff.co

diff.ae

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diff.us

diff.net.au

diff.lt

diff.su

diff.com

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fidf.org

iffd.es

ffid.ca

iffd.co.in

fidf.net

ffid.com.br

iffd.net

dffi.com

ffid.cn

iffd.eu

ffdi.org

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ffdi.net

ifdf.net

ffid.de

ffdi.pro

ffdi.hr

fdfi.com

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fdfi.de

ffid.net

fidf.com

ifdf.de

fdfi.cn

idff.net

dfif.cn

ifdf.com

iffd.com

fidf.info

ffid.eu

ifdf.org

ffid.com

dffi.net

fifd.cn

ffid.co.jp

ffdi.com

dffi.org

fdfi.org

fifd.com

fdif.org

dffi.de

iffd.it

idff.edu.do

idff.com

fdfi.net

idff.org

fdif.com

iffd.org

fidf.fr

ffid.in

DNS History

14 records (9 active, 5 former)

○NSalfa.ns.active24.cz2015-07-04 → 2016-06-18 · 4 obs

● 2015-07-04 17:06:04
● 2016-06-18 04:12:00
○ 2026-02-28 02:50:58
○ 2026-07-23 19:07:46

○NSbeta.ns.active24.cz2015-07-04 → 2016-06-18 · 4 obs

● 2015-07-04 17:06:04
● 2016-06-18 04:12:00
○ 2026-02-28 02:50:58
○ 2026-07-23 19:07:46

○NSgama.ns.active24.sk2015-07-04 → 2016-06-18 · 4 obs

● 2015-07-04 17:06:04
● 2016-06-18 04:12:00
○ 2026-02-28 02:50:58
○ 2026-07-23 19:07:46

●NSns1.websupport.cz2026-02-28 → 2026-07-23 · 3 obs

○ 2016-06-18 04:12:00
● 2026-02-28 02:50:58
● 2026-07-23 19:07:46

●NSns2.websupport.cz2026-02-28 → 2026-07-23 · 3 obs

○ 2016-06-18 04:12:00
● 2026-02-28 02:50:58
● 2026-07-23 19:07:46

●NSns3.websupport.eu2026-02-28 → 2026-07-23 · 3 obs

○ 2016-06-18 04:12:00
● 2026-02-28 02:50:58
● 2026-07-23 19:07:46

●MXalt1.aspmx.l.google.com2015-07-04 → 2026-07-23 · 2 obs

● 2015-07-04 17:06:04
● 2026-07-23 19:07:46

●MXalt2.aspmx.l.google.com2015-07-04 → 2026-07-23 · 2 obs

● 2015-07-04 17:06:04
● 2026-07-23 19:07:46

●MXalt3.aspmx.l.google.com2015-07-04 → 2026-07-23 · 2 obs

● 2015-07-04 17:06:04
● 2026-07-23 19:07:46

●MXalt4.aspmx.l.google.com2015-07-04 → 2026-07-23 · 2 obs

● 2015-07-04 17:06:04
● 2026-07-23 19:07:46

●MXaspmx.l.google.com2015-07-04 → 2026-07-23 · 2 obs

● 2015-07-04 17:06:04
● 2026-07-23 19:07:46

○A185.120.68.1202016-02-29 → 2016-06-18 · 5 obs

○ 2015-11-09 14:00:44
● 2016-02-29 10:31:18
● 2016-06-18 04:12:00
○ 2026-02-28 02:50:58
○ 2026-07-23 19:07:46

●A31.15.13.432026-02-28 → 2026-07-23 · 3 obs

○ 2016-06-18 04:12:00
● 2026-02-28 02:50:58
● 2026-07-23 19:07:46

○A91.121.225.1202015-07-04 → 2015-11-09 · 4 obs

● 2015-07-04 17:06:04
● 2015-11-09 14:00:44
○ 2016-02-29 10:31:18
○ 2026-07-23 19:07:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
diff.cz	ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu	-

✅ Authoritative Response

Server:45.10.97.11

NS records: ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 3752ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`31.15.13.43`
NS	3	`ns1.websupport.cz, ns2.websupport.cz...`
MX	5	`aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)...`
TXT	1	`v=spf1 include:_spf.google.com include:c`
SOA	1	`ns1.websupport.cz admin.websupport.cz`

Analysis

IP Addresses

diff.cz resolves to one IP address: 31.15.13.43.

Name Servers

diff.cz has three name servers — ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu.

diff.cz partially shares its NS delegation with several other domains, including kascar.cz, xep.cz, monitordrazeb.cz and two others.

Each of ns1.websupport.cz, ns2.websupport.cz and ns3.websupport.eu points to two IP numbers. ns1.websupport.cz points to 45.10.97.11 and 2a10:bbc0::11. ns2.websupport.cz points to 185.71.159.12 and 2a02:250:3::12. ns3.websupport.eu points to 45.10.97.13 and 2a10:bbc0::13.

Mail Servers

diff.cz is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

diff.cz has at least partial mail server overlap with other domains such as hiratake.xyz, ns500671.ns500671.ns500671.ns500754.ns500671.ns500754.ns500688.ns500705.ns500688.ns500291.ns500671.ns500649.ns500649.ns500666.tenderladiesbz.com, ns500754.ns500671.ns500671.ns500742.ns500704.ns500704.ns500704.ns500671.ns500704.ns500704.ns500666.ns500291.ns500131.lustychickser.com and two more.

These mail servers commonly co-occur with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 others.

Hostnames that resolve to two IP addresses:

aspmx.l.google.com resolves to 172.253.63.26 and 2607:f8b0:4004:c1b::1a.

alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com resolves to 192.178.223.26 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com resolves to 172.253.157.26 and 2a00:1450:400c:c23::1b.