`mail.sibengineering.com`

CNAME	`gwsib.sibengineering.com`
DNSSEC	⚠️ Not signed
A	5.131.242.134^{🇷🇺 NTK5.131.240.0/20 Novotelecom Ltd.}
		PTR	`mx2.sibengineering.com`

`sibengineering.com`

	DNSSEC	⚠️ Not signed
	A	92.53.96.143^{🇷🇺 TimeWeb-AS92.53.96.0/24}
	NS	`ns1.he.net` ⭐
	NS	`ns2.he.net`
	NS	`ns3.he.net`
	NS	`ns4.he.net`
	NS	`ns5.he.net`
	MX	`mx1.sibengineering.com` ⭐
	MX	`zimbra-sib.sibengineering.com`⁽⁵⁰⁾
	TXT	`v=spf1 +a +mx -all`
	SOA	`ns1.he.net`hostmaster@he.net 2025-12-11 #0

Previously MX for

sibengineering.com

Same first word

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DNS History

2 records (1 active, 1 former)

○A37.192.130.1632015-08-12 → 2016-03-29 · 4 obs

● 2015-08-12 13:40:44
● 2016-03-29 00:05:10
○ 2026-03-30 00:00:08
○ 2026-03-30 00:00:10

●CNAMEgwsib.sibengineering.com2026-03-30 → 2026-03-30 · 2 obs

● 2026-03-30 00:00:08
● 2026-03-30 00:00:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
sibengineering.com	ns1.he.net, ns2.he.net, ns3.he.net, ns4.he.net...	-

✅ Authoritative Response

Server:216.218.130.2

NS records: ns1.he.net, ns2.he.net, ns3.he.net, ns4.he.net, ns5.he.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sibengineering.com (unsigned zone)

⏱️ Timing

Total: 384ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`gwsib.sibengineering.com`

Analysis

IP Addresses

mail.sibengineering.com points to IP number 5.131.242.134.

Other host names, for example gwsib.sibengineering.com and mx2.sibengineering.com, share IPs with mail.sibengineering.com.

mail.sibengineering.com - robtex.com