`mx42.zub.ru`

DNSSEC	⚠️ Not signed
A	31.13.20.2^{🇷🇺 ASN-AVANTEL-MSK31.13.16.0/21 Matrix telecom, Moscow}
		PTR	`mx42.zub.ru`

`zub.ru`

	DNSSEC	⚠️ Not signed
	A	95.129.232.55^{🇷🇺 DDOS-GUARD95.129.232.0/24 LTD}
	NS	`ns3-l2.nic.ru` ⭐
	NS	`ns4-cloud.nic.ru`
	NS	`ns4-l2.nic.ru`
	NS	`ns8-cloud.nic.ru`
	NS	`ns8-l2.nic.ru`
	MX	`mx41.zub.ru` ⭐
	MX	`mx42.zub.ru`⁽¹⁰⁾
	MX	`mx3.zub.ru`⁽²⁰⁾
	TXT	`v=spf1 ip4:31.13.20.2 ip4:213.208.161.138 ip4:185.236.210.105 -all`
	TXT	`google-site-verification=PtPTqHlpc3_w4MEsw94V9k6T6Rkc9zkvhJW8DmCuiPc`
	TXT	`_globalsign-domain-verification=BhAVI70MtsqVj-8fO5FR5FBBgfo4dP3p9EO3IMiOFS`
	TXT	`_globalsign-domain-verification=IXJdxS59CN3aqPj1ynPx1VJgpgCT_lTZPSEey9SpV5`
	TXT	`_globalsign-domain-verification=LEN_1D3SIa_As65KNLr53cnHc6pZU_Yx2V0-Yhgi4Q`
	TXT	`_globalsign-domain-verification=pioSLa9vbRMACix3xsGWzDDSQGPvjkamZrrKNrzyWC`
	SOA	`ns3-l2.nic.ru`dns@nic.ru 2018-11-19 #6

rank #716227 globally
rank #24336 in the tld
📈 Tranco rank: #229,192

PTR for

140.161.208.213.in-addr.arpa

2.20.13.31.in-addr.arpa

MX for

zub.ru

polyclinika.ru

medosmotri.ru

digithelp.ru

Same first word

mx42.net

mx42.de

mx42.org

mx42.com

mx42.ru

Similar names

2mx4.com

mx24.fi

24xm.org

mx24.ru

24mx.ru

24mx.es

24mx.fi

24mx.ch

24mx.se

24mx.de

24mx.it

m24x.com

24mx.be

24mx.com

42xm.com

mx24.net

24mx.nl

mx24.se

mx24.fr

24mx.eu

mx24.com

24mx.cz

24xm.com

24mx.at

42mx.com

xm24.de

24mx.ie

xm42.com

24mx.gr

24mx.no

x4m2.org.cn

24mx.pl

24mx.fr

24mx.co.uk

mx24.org

xm24.com

mx24.eu

4x2m.com

mx24.ch

DNS History

2 records (1 active, 1 former)

○A213.208.161.1402026-03-15 → 2026-03-30 · 4 obs

● 2026-03-15 06:10:28
● 2026-03-30 00:35:08
○ 2026-04-05 09:13:04
○ 2026-05-11 01:10:56

●A31.13.20.22026-04-05 → 2026-05-11 · 3 obs

○ 2026-03-30 00:35:08
● 2026-04-05 09:13:04
● 2026-05-11 01:10:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ru	a.dns.ripn.net, d.dns.ripn.net, f.dns.ripn.net, b.dns.ripn.net...	-
zub.ru	ns3-l2.nic.ru, ns4-l2.nic.ru, ns8-l2.nic.ru, ns4-cloud.nic.ru...	19 records

✅ Authoritative Response

Server:91.217.21.20

NS records: ns3-l2.nic.ru, ns4-l2.nic.ru, ns8-l2.nic.ru, ns4-cloud.nic.ru, ns8-cloud.nic.ru

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for zub.ru (unsigned zone)

⏱️ Timing

Total: 1172ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`31.13.20.2`

📌 Glue Records Collected

Total: 19

Out-of-bailiwick: 19 (ns3-l2.nic.ru, ns4-l2.nic.ru, ns8-l2.nic.ru...)

Analysis

Mail Server Role

mx42.zub.ru serves as a mail server for zub.ru, polyclinika.ru, medosmotri.ru and digithelp.ru.

mx3.zub.ru and mx41.zub.ru are commonly used as mail servers along with mx42.zub.ru.

IP Addresses

mx42.zub.ru points to a single IP address: 31.13.20.2.

Other host names, for instance mx10.digithelp.ru, share IP numbers with mx42.zub.ru.

mx42.zub.ru - robtex.com

mx42.zub.ru

zub.ru