hostmaster.krtk.ru - robtex.com

hostmaster.krtk.ru

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:3aba🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:ce40🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.58.186Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.206.64🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.58.186, 172.67.206.64
IPv6 hints2606:4700:3031::6815:3aba, 2606:4700:3036::ac43:ce40
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=62, name=cloudflare-ech.com

krtk.ru

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:3aba🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:ce40🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.58.186Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.206.64🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScarioca.ns.cloudflare.com ⭐
NSrandy.ns.cloudflare.com
MXmx.yandex.net ⭐
TXTv=spf1 redirect=_spf.yandex.net
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.58.186, 172.67.206.64
IPv6 hints2606:4700:3031::6815:3aba, 2606:4700:3036::ac43:ce40
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=70, name=cloudflare-ech.com
SOAcarioca.ns.cloudflare.comdns@cloudflare.com serial=2407504395

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DNS History

5 records (4 active, 1 former)

A104.21.58.186172.67.206.642606:4700:3031::6815:3aba2606:4700:3036::ac43:ce402606:4700:3035::ac43:ce40
●A104.21.58.1862026-02-22 → 2026-07-19 · 2 obs
● 2026-02-22 12:09:40
● 2026-07-19 12:08:24
●A172.67.206.642026-02-22 → 2026-07-19 · 2 obs
● 2026-02-22 12:09:40
● 2026-07-19 12:08:24
●A2606:4700:3031::6815:3aba2026-02-22 → 2026-07-19 · 2 obs
● 2026-02-22 12:09:40
● 2026-07-19 12:08:24
○A2606:4700:3035::ac43:ce402026-02-22 → 2026-06-16 · 3 obs
● 2026-02-22 12:09:40
● 2026-06-16 18:01:08
○ 2026-07-19 12:08:24
●A2606:4700:3036::ac43:ce402026-07-19 → 2026-07-19 · 2 obs
○ 2026-06-16 18:01:08
● 2026-07-19 12:08:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
rua.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net...-
krtk.rucarioca.ns.cloudflare.com, randy.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.195.109

NS records: carioca.ns.cloudflare.com, randy.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for krtk.ru (unsigned zone)

⏱️ Timing

Total: 732ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.58.186, 172.67.206.64
AAAA22606:4700:3036::ac43:ce40, 2606:4700:3031::6815:3aba
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

hostmaster.krtk.ru resolves to four IP addresses: 104.21.58.186, 172.67.206.64, 2606:4700:3031::6815:3aba and 2606:4700:3036::ac43:ce40.

mddems.net, www.krtk.ru, ukplans4u.co.uk and two other host names share IP numbers with hostmaster.krtk.ru.