`mail.ldu.ru`

DNSSEC	⚠️ Not signed
A	147.45.109.91^{🇷🇺 TimeWeb-AS147.45.109.0/24}
		PTR	`ldu.su`

`ldu.ru`

	DNSSEC	⚠️ Not signed
	A	147.45.109.91^{🇷🇺 TimeWeb-AS147.45.109.0/24}
	NS	`ns1.ldu.su` ⭐
	NS	`ns2.ldu.su`
	MX	`mail.ldu.ru` ⭐
	TXT	`v=spf1 ip4:147.45.109.91 a mx ~all`
	SOA	`ns1.ldu.su`admin@ldu.ru 2024-02-22 #1

MX for

ldu.ru

Same first word

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DNS History

2 records (1 active, 1 former)

●A147.45.109.912026-02-15 → 2026-07-19 · 3 obs

○ 2017-01-08 18:04:02
● 2026-02-15 00:50:08
● 2026-07-19 07:51:34

○A31.131.251.2332015-05-26 → 2017-01-08 · 4 obs

● 2015-05-26 01:41:38
● 2017-01-08 18:04:02
○ 2026-02-15 00:50:08
○ 2026-07-19 07:51:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ru	c.tld-servers.ru, d.dns.ripn.net, a.dns.ripn.net, f.dns.ripn.net...	-
ldu.ru	ns1.ldu.su, ns2.ldu.su	-

✅ Authoritative Response

Server:94.154.11.28

NS records: ns1.ldu.su, ns2.ldu.su

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ldu.ru (unsigned zone)

⏱️ Timing

Total: 1561ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`147.45.109.91`

Analysis

Mail Server Role

Mail for ldu.ru is routed through the mail server mail.ldu.ru.

IP Addresses

mail.ldu.ru has exactly one IP address — 147.45.109.91.

mx.sbio.info, tss30.ru, ikra-vobla.ru plus two other host names have IP numbers in common with mail.ldu.ru.

mail.ldu.ru - robtex.com

mail.ldu.ru

ldu.ru