Domain Intelligence Report

chance.cz

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Gathering intelligence... (12/12)

DNS

WHOIS

Security

DNSSEC

Threats

Deliverability

SSL/TLS

HTTP

Tech Stack

Subdomains

IPv6

Measured 2026-11-15 15:46 UTC · aaaa.bot

Website, mail and DNS all work over IPv6.

Both published IPv6 addresses accepted a connection when we tried them.

✓ chance.cz answers (2 of 2 addresses)
✓ www.chance.cz answers (2 of 2)
✓ Mail: 1 of 1 servers have IPv6
✓ Nameservers: 2 of 2 have IPv6

Details: published addresses and what answered

Loads over IPv6 with a valid certificate after 1 redirect: HTTP 403.

Name	Published address (AAAA)	Answers when we connect
chance.cz	Published`2606:4700:440d::ac40:93892606:4700:440d::6812:2877`	Answers when we connect✓ answers on 443✓ answers on 443
www.chance.cz	Published`2606:4700:440d::6812:28772606:4700:440d::ac40:9389`	Answers when we connect✓ answers on 443✓ answers on 443
Mail	Published`chance-cz.mail.protection.outlook.com`	Answers when we connect✓ has IPv6
Nameservers	Published`charles.ns.cloudflare.comroxy.ns.cloudflare.com`	Answers when we connect✓ has IPv6✓ has IPv6

First measured with IPv6 on 2026-11-04Changes are recorded from here on, each with its date.

Full check on aaaa.bot →Permanent receipt dWlcDi3lc-JSON

See where it lives on the IPv4 map →

Lineage

Our records: Jan 6, 2009 → Nov 15, 2026

Oldest registry snapshot we hold: 2025 · 1 renewal on record. These dates are when our records begin, not when the domain was registered.

DNS provider

2 earlier
- chance.cz + industries.cz
  Jan – Feb 2009
- chance.cz + heaven-industries.com
  Jul 2010 – Mar 2012
chance.cz
Nov 2014 – Feb 2015
tipsport.cz
Dec 2015 – Sep 2022
f5clouddns.com
Dec 2022
Cloudflare
Feb 2023 – Jun 2026

IPv6

IPv6published, and answering
First measured Nov 2026

What changed

IPv6 first measured: published, and answering on Nov 4, 2026chance.cz has 2 IPv6 addresses. Grade A. Measured by aaaa.bot, 2026-11-04 23:50 UTC. No earlier IPv6 record is held, so this is not a "gained" date.
Renewed +1 year between Jul 1, 2025 and Jan 19, 2026Expiry moved from 2025-10-26 to 2026-10-26.
DNS moved to Cloudflare between Dec 29, 2022 and Feb 27, 2023ns1.f5clouddns.com, ns2.f5clouddns.com → charles.ns.cloudflare.com, roxy.ns.cloudflare.com. Old set last seen in WHOIS on 2022-12-29; new set first seen in WHOIS on 2023-02-27.
DNS moved to f5clouddns.com between Sep 14, 2022 and Dec 21, 2022ns1.tipsport.cz, ns2.tipsport.cz, ns3.tipsport.cz, ns4.tipsport.cz → ns1.f5clouddns.com, ns2.f5clouddns.com. Old set last seen in WHOIS on 2022-09-14; new set first seen in WHOIS on 2022-12-21.
New nameservers at tipsport.cz between Aug 27, 2020 and Dec 29, 2020ns.tipsport.cz, ns2.tipsport.cz, ns3.tipsport.cz, ns4.tipsport.cz → ns1.tipsport.cz, ns2.tipsport.cz, ns3.tipsport.cz, ns4.tipsport.cz. Old set last seen in WHOIS on 2020-08-27; new set first seen in WHOIS on 2020-12-29.
DNS moved to tipsport.cz between Feb 25, 2015 and Dec 30, 2015mail.chance.cz, ns2.chance.cz → ns.tipsport.cz, ns2.tipsport.cz. Old set last seen in WHOIS on 2015-02-25; new set first seen in WHOIS on 2015-12-30.
DNS moved to chance.cz between Mar 29, 2012 and Nov 29, 2014joni.heaven-industries.com, mail.chance.cz → mail.chance.cz, ns2.chance.cz. Old set last seen in WHOIS on 2012-03-29; new set first seen in WHOIS on 2014-11-29.
DNS moved to chance.cz + heaven-industries.com between Feb 15, 2009 and Jul 5, 2010mail.chance.cz, mercury.industries.cz → joni.heaven-industries.com, mail.chance.cz. Old set last seen in WHOIS on 2009-02-15; new set first seen in WHOIS on 2010-07-05.

Solid bar: the stretch we observed that name. Dot: a single sighting. Dotted line: no record between sightings of the same name. Nothing is drawn between different names.

Registrar and renewals: 2 WHOIS/RDAP snapshots, 2025-07-01 to 2026-01-19 (ledger built 2026-09-27). Every renewal

DNS provider, WHOIS snapshots: 58 WHOIS/RDAP snapshots that listed nameservers, 2009-01-06 to 2026-06-10 (who.is archive). Both sources feed one row per provider (hover a bar to see which); a change is placed between the nearest observations on either side, and where the two sources disagree, both are listed under What changed.

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Explore related

Registered in 1997 — the same year as google.com, facebook.com and mail.ru.

AgeDomains from 1997 TLD.cz domains RegistrarWeb4U s.r.o.DNS providercloudflare.com nameservers IPv6Does chance.cz have IPv6?