mail.mathfest.su - robtex.com

mail.mathfest.su

DNSSEC⚠️ Not signed
A104.21.0.181Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.128.45🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.0.181, 172.67.128.45

mathfest.su

DNSSEC⚠️ Not signed
A104.21.0.181Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.128.45🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSgemma.ns.cloudflare.com ⭐
NSjay.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.0.181, 172.67.128.45
SOAgemma.ns.cloudflare.comdns@cloudflare.com serial=2399331350

Previously MX for

mathfest.su

Same first word

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DNS History

3 records (2 active, 1 former)

202120222023202420252026A104.21.0.181172.67.128.45212.109.197.112
●A104.21.0.1812026-03-27 → 2026-03-27 · 2 obs
○ 2020-01-01 02:40:18
● 2026-03-27 09:21:38
●A172.67.128.452026-03-27 → 2026-03-27 · 2 obs
○ 2020-01-01 02:40:18
● 2026-03-27 09:21:38
○A212.109.197.1122020-01-01 → 2020-01-01 · 2 obs
● 2020-01-01 02:40:18
○ 2026-03-27 09:21:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
sua.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net...10 records
mathfest.sujay.ns.cloudflare.com, gemma.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.193.123

NS records: jay.ns.cloudflare.com, gemma.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathfest.su (unsigned zone)

⏱️ Timing

Total: 727ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.128.45, 104.21.0.181
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net...)

Analysis

IP Addresses

mail.mathfest.su resolves to two IP numbers: 104.21.0.181 and 172.67.128.45.

Other host names, for instance www.orvgpjjyagvfn.site, bebepgs.com, handtohandkajukenbo.com, xonirusiqispartners.click and continuum-nursing.com share IP numbers with mail.mathfest.su.