mail.rtu.ru - robtex.com

mail.rtu.ru

DNSSEC⚠️ Not signed
A2a06:dd00:10:0:225:90ff:fe03:50fa🇪🇪 SmartApe2a06:dd00::/32
A185.9.146.17🇪🇪 SmartApe185.9.144.0/22

rtu.ru

DNSSEC⚠️ Not signed
A2a01:4f9:2a:306e::2🇩🇪 Hetzner2a01:4f9::/32 HETZNER-IPv6-BLK
A95.217.43.252🇫🇮 Hetzner95.217.0.0/16 HETZNER-DC
NSa.ns.selectel.ru ⭐
NSb.ns.selectel.ru
NSc.ns.selectel.ru
NSd.ns.selectel.ru
MXmail.rtu.ru ⭐
TXTv=spf1 include:_hz146spf.ardimusic.win include:_hz7910spf.ardimusic.win inclu...
SOAa.ns.selectel.rusupport@selectel.ru 2026-04-19 #11
WOT: SAFE (60/100)
WOT: SAFE (62/100)

MX for

rtu.ru

Same first word

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DNS History

2 records (2 active, 0 former)

A185.9.146.172a06:dd00:10:0:225:90ff:fe03:50fa
●A185.9.146.172026-02-16 → 2026-05-02 · 2 obs
● 2026-02-16 15:15:52
● 2026-05-02 08:07:58
●A2a06:dd00:10:0:225:90ff:fe03:50fa2026-02-16 → 2026-05-02 · 2 obs
● 2026-02-16 15:15:52
● 2026-05-02 08:07:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
rue.dns.ripn.net, d.dns.ripn.net, a.dns.ripn.net, f.dns.ripn.net...-
rtu.ruc.ns.selectel.ru, b.ns.selectel.ru, a.ns.selectel.ru, d.ns.selectel.ru8 records

✅ Authoritative Response

Server:77.223.114.4

NS records: c.ns.selectel.ru, b.ns.selectel.ru, a.ns.selectel.ru, d.ns.selectel.ru

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rtu.ru (unsigned zone)

⏱️ Timing

Total: 835ms | Queries: -

📄 Records

TypeCountSample Data
A1185.9.146.17
AAAA12a06:dd00:10:0:225:90ff:fe03:50fa

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (d.ns.selectel.ru, c.ns.selectel.ru, b.ns.selectel.ru...)

Analysis

Mail Server Role

mail.rtu.ru serves as a mail server for rtu.ru.

IP Addresses

mail.rtu.ru has two IP numbers: 2a06:dd00:10:0:225:90ff:fe03:50fa and 185.9.146.17.

Other host names, for instance mail.ernieball.ru, vombatik.ru, rutorg.ru, mail.gvalt.ru and sa1.adslink.ru share IP numbers with mail.rtu.ru.