sef.su - dns.ninja

`sef.su`

DNSSEC	⚠️ Not signed
A	5.252.116.23^{🇷🇺 I-SERVERS-NORTH-EU5.252.116.0/24}
		PTR	`web1.ihor-hosting.ru`
NS	`web2.ihor-hosting.ru` ⭐
		A	5.252.116.9^{🇷🇺 I-SERVERS-NORTH-EU5.252.116.0/24}
			PTR	`web2.ihor-hosting.ru`
NS	`ns1.ihordns.net`
		A	5.252.116.8^{🇷🇺 I-SERVERS-NORTH-EU5.252.116.0/24}
			PTR	`ns1.ihordns.net`
NS	`ns2.ihordns.net`
		A	45.89.64.5^{🇷🇺 I-SERVERS-NORTH-EU45.89.64.0/24}
MX	`mail.sef.su` ⭐
		A	5.252.116.23^{🇷🇺 I-SERVERS-NORTH-EU5.252.116.0/24}
			PTR	`web1.ihor-hosting.ru`
TXT	`v=spf1 ip4:5.252.116.9 ip4:5.252.116.23 a mx ~all`
SOA	`web2.ihor-hosting.ru`root@example.com 2021-07-01 #20

`su`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.ripn.net` ⭐
	NS	`b.dns.ripn.net`
	NS	`c.tld-servers.ru`
	NS	`d.dns.ripn.net`
	NS	`e.dns.ripn.net`
	NS	`f.dns.ripn.net`
	SOA	`a.dns.ripn.net`hostmaster@ripn.net serial=650210210

⚠️ On DNS blocklist: spam-tlds

Subdomains

mail.sef.su

Same first word

sef.no

sef.se

sef.co.za

sef.org.sy

sef.com.tw

sef.org.za

sef.ca

sef.fr

sef.kr

sef.org.nz

sef.fi

sef.it

sef.or.id

sef.sk

sef.fm

sef.su

sef.ind.br

sef.ru

sef.com.co

sef.com.tr

sef.com.ua

sef.org.br

sef.ci

sef.org.pk

sef.eu

sef.cl

sef.tokyo

sef.events

sef.dk

sef.cc

sef.be

sef.net

sef.co.uk

sef.info

sef.co

sef.co.jp

sef.com.gr

sef.hu

sef.pl

sef.edu.pk

sef.org.tw

sef.org.mx

sef.cz

sef.nl

sef.ch

sef.tv

sef.energy

sef.es

sef.in

sef.me

sef.app

sef.sc.gov.br

sef.nu

sef.cn

sef.ro

sef.org

sef.us

sef.com.au

sef.rs

sef.mobi

sef.at

sef.de

sef.by

sef.com

sef.pt

sef.ma

Similar names

fes.us

efs.cz

fes.com.pl

fes.edu.pl

efs.es

fse.fr

esf.systems

esf.us

fes.me

fse.digital

sfe.blue

esf.es

fse.com.vn

efs.at

efs.jo

esf.fi

esf.gr

fes.org

sfe.net.au

efs.kz

fes.fr

fse.tw

esf.cc

efs.aero

sfe.de

fes.co.uk

esf.at

esf.sh.cn

fes.org.al

esf.su

efs.ru

esf.ir

fse.or.jp

fse.net.au

esf.org.au

sfe.su

fes.pl

esf.dk

esf.world

esf.org.cn

fes.ch

efs.hu

fse.gouv.fr

fse.cz

sfe.go.cr

efs.info

sfe.dk

fes.com.do

efs.no

fse.com.au

efs.rs

esf.com.mx

esf.ch

sfe.at

esf.hr

fse.la

esf.mobi

fes.hr

efs.fr

esf.no

esf.travel

efs.co

efs.sg

fes.eu

fse.in

efs.gov.pl

fes.info

fes.by

fse.de

fse.email

fes.uz

fes.org.nz

sfe.se

esf.cl

efs.com

sfe.com.br

fse.lu

esf.bg

esf.jp

fes.de

sfe.cz

sfe.us

DNS History

17 records (5 active, 12 former)

○NSert.su2016-02-05 → 2016-02-05 · 4 obs

○ 2015-11-14 10:39:56
● 2016-02-05 07:31:40
○ 2016-08-08 04:56:14
○ 2026-08-14 21:17:14

○NSns1.example.com2015-06-16 → 2015-11-14 · 4 obs

● 2015-06-16 18:17:40
● 2015-11-14 10:39:56
○ 2016-02-05 07:31:40
○ 2026-08-14 21:17:14

○NSns1.firstvds.ru2016-02-05 → 2020-12-25 · 5 obs

○ 2015-11-14 10:39:56
● 2016-02-05 07:31:40
● 2020-12-25 20:17:40
○ 2021-10-12 17:35:42
○ 2026-08-14 21:17:14

●NSns1.ihordns.net2021-10-12 → 2026-08-14 · 3 obs

○ 2020-12-25 20:17:40
● 2021-10-12 17:35:42
● 2026-08-14 21:17:14

○NSns2.example.com2015-06-16 → 2015-11-14 · 4 obs

● 2015-06-16 18:17:40
● 2015-11-14 10:39:56
○ 2016-02-05 07:31:40
○ 2026-08-14 21:17:14

○NSns2.firstvds.ru2016-02-05 → 2020-12-25 · 5 obs

○ 2015-11-14 10:39:56
● 2016-02-05 07:31:40
● 2020-12-25 20:17:40
○ 2021-10-12 17:35:42
○ 2026-08-14 21:17:14

●NSns2.ihordns.net2021-10-12 → 2026-08-14 · 3 obs

○ 2020-12-25 20:17:40
● 2021-10-12 17:35:42
● 2026-08-14 21:17:14

○NSqwq.firstvds.ru2020-12-25 → 2020-12-25 · 4 obs

○ 2016-08-08 04:56:14
● 2020-12-25 20:17:40
○ 2021-10-12 17:35:42
○ 2026-08-14 21:17:14

○NSqwq.fvds.ru2015-06-16 → 2016-08-08 · 6 obs

● 2015-06-16 18:17:40
● 2015-11-14 10:39:56
○ 2016-02-05 07:31:40
● 2016-08-08 04:56:14
○ 2020-12-25 20:17:40
○ 2026-08-14 21:17:14

●NSweb2.ihor-hosting.ru2021-10-12 → 2026-08-14 · 3 obs

○ 2020-12-25 20:17:40
● 2021-10-12 17:35:42
● 2026-08-14 21:17:14

●MXmail.sef.su2015-06-16 → 2026-08-14 · 2 obs

● 2015-06-16 18:17:40
● 2026-08-14 21:17:14

○A37.46.129.1042016-02-05 → 2016-02-05 · 4 obs

○ 2015-11-14 10:39:56
● 2016-02-05 07:31:40
○ 2016-08-08 04:56:14
○ 2026-08-14 21:17:14

○A37.46.135.2432016-08-08 → 2016-08-08 · 4 obs

○ 2016-02-05 07:31:40
● 2016-08-08 04:56:14
○ 2020-12-25 20:17:40
○ 2026-08-14 21:17:14

●A5.252.116.232021-10-12 → 2026-08-14 · 3 obs

○ 2020-12-25 20:17:40
● 2021-10-12 17:35:42
● 2026-08-14 21:17:14

○A5.252.116.272026-02-28 → 2026-08-14 · 2 obs

○ 2026-02-28 00:04:52
○ 2026-08-14 21:17:14

○A62.109.10.252020-12-25 → 2020-12-25 · 4 obs

○ 2016-08-08 04:56:14
● 2020-12-25 20:17:40
○ 2021-10-12 17:35:42
○ 2026-08-14 21:17:14

○A82.146.52.232015-06-16 → 2015-11-14 · 4 obs

● 2015-06-16 18:17:40
● 2015-11-14 10:39:56
○ 2016-02-05 07:31:40
○ 2026-08-14 21:17:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
su	a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net...	-
sef.su	ns2.ihordns.net, ns1.ihordns.net	-

✅ Authoritative Response

Server:5.252.116.8

NS records: ns2.ihordns.net, ns1.ihordns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sef.su (unsigned zone)

⏱️ Timing

Total: 1639ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`5.252.116.23`
NS	2	`ns1.ihordns.net, ns2.ihordns.net`
MX	2	`mail.sef.su (pri: 10), mail.sef.su (pri: 20)`
TXT	1	`v=spf1 ip4:5.252.116.9 ip4:5.252.116.23`
SOA	1	`web2.ihor-hosting.ru root.example.com`

Analysis

Hierarchy

The domain mail.sef.su falls under the parent sef.su.

IP Addresses

sef.su resolves to one IP address: 5.252.116.23.

mail.2112.xn--p1ai, i-exam.net, mail.365web.ru and two other host names share IP numbers with sef.su.

Name Servers

The authoritative name servers for sef.su are ns1.ihordns.net, ns2.ihordns.net and web2.ihor-hosting.ru — three in total.

At least some of sef.su's name servers are shared with other domains, for example x5retail.org, ragbot.ru, dom-posutochno.ru and two more.

These name servers are often deployed together with the name servers web31-isp, ns1.marosnet.ru, ns2.marosnet.ru and ip.ihor-hosting.ru.

The hostnames ns1.ihordns.net, ns2.ihordns.net and web2.ihor-hosting.ru each resolve to a single IP: ns1.ihordns.net → 5.252.116.8, ns2.ihordns.net → 45.89.64.5, web2.ihor-hosting.ru → 5.252.116.9.

Mail Servers

Mail for sef.su is handled by a single mail server, mail.sef.su.

mail.sef.su directs to just one IP number, 5.252.116.23.