instructor.su - dns.ninja

`instructor.su`

DNSSEC	⚠️ Not signed
A	2a00:f940:2:2:1:1:0:220^{🇷🇺 AS-REGRU2a00:f940:2::/48 Reg.Ru Hosting Route}
A	37.140.192.35^{🇷🇺 AS-REGRU37.140.192.0/24 Reg.Ru}
NS	`server220.hosting.reg.ru` ⭐
		A	37.140.192.35^{🇷🇺 AS-REGRU37.140.192.0/24 Reg.Ru}
			PTR	`server220.hosting.reg.ru`
NS	`ns1.hosting.reg.ru`
		A	31.31.194.245^{🇷🇺 AS-REGRU31.31.194.0/24 Reg.Ru}
			PTR	`ns1.hosting.reg.ru`
		A	31.31.194.251^{🇷🇺 AS-REGRU31.31.194.0/24 Reg.Ru}
			PTR	`ns17-1.hosting.reg.ru`
		A	31.31.196.37^{🇷🇺 AS-REGRU31.31.196.0/24 Reg.Ru}
			PTR	`ns18-2.hosting.reg.ru`
		A	31.31.196.52^{🇷🇺 AS-REGRU31.31.196.0/24 Reg.Ru}
			PTR	`ns1.hosting.reg.ru`
		A	31.31.196.61^{🇷🇺 AS-REGRU31.31.196.0/24 Reg.Ru}
			PTR	`ns30-2.hosting.reg.ru`
		A	31.31.196.180^{🇷🇺 AS-REGRU31.31.196.0/24 Reg.Ru}
			PTR	`ns31-1.hosting.reg.ru`
		A	31.31.198.177^{🇷🇺 AS-REGRU31.31.198.0/24 Reg.Ru}
			PTR	`ns2.hosting.reg.ru`
		A	37.140.192.20^{🇷🇺 AS-REGRU37.140.192.0/24 Reg.Ru}
			PTR	`ns29-1.hosting.reg.ru`
		A	37.140.192.93^{🇷🇺 AS-REGRU37.140.192.0/24 Reg.Ru}
			PTR	`ns32-1.hosting.reg.ru`
		A	37.140.193.121^{🇷🇺 AS-REGRU37.140.193.0/24 Reg.Ru}
			PTR	`ns2.hosting.reg.ru`
		A	37.140.196.144^{🇷🇺 AS-REGRU37.140.196.0/24 Reg.Ru}
			PTR	`ns37-1.hosting.reg.ru`
		A	194.58.91.38^{🇷🇺 AS-REGRU194.58.91.0/24 Reg.Ru}
			PTR	`ns38-1.hosting.reg.ru`
		A	194.67.73.6^{🇷🇺 AS-REGRU194.67.73.0/24 Reg.Ru-M9}
			PTR	`ns33-1.hosting.reg.ru`
		A	194.67.73.9^{🇷🇺 AS-REGRU194.67.73.0/24 Reg.Ru-M9}
			PTR	`ns34-2.hosting.reg.ru`
NS	`ns2.hosting.reg.ru`
		A	31.31.194.244^{🇷🇺 AS-REGRU31.31.194.0/24 Reg.Ru}
			PTR	`ns1.hosting.reg.ru`
		A	31.31.196.34^{🇷🇺 AS-REGRU31.31.196.0/24 Reg.Ru}
			PTR	`ns17-2.hosting.reg.ru`
		A	31.31.196.53^{🇷🇺 AS-REGRU31.31.196.0/24 Reg.Ru}
			PTR	`ns1.hosting.reg.ru`
		A	31.31.196.71^{🇷🇺 AS-REGRU31.31.196.0/24 Reg.Ru}
			PTR	`ns32-2.hosting.reg.ru`
		A	31.31.198.161^{🇷🇺 AS-REGRU31.31.198.0/24 Reg.Ru}
			PTR	`ns29-2.hosting.reg.ru`
		A	31.31.198.178^{🇷🇺 AS-REGRU31.31.198.0/24 Reg.Ru}
			PTR	`ns2.hosting.reg.ru`
		A	37.140.192.31^{🇷🇺 AS-REGRU37.140.192.0/24 Reg.Ru}
			PTR	`ns37-2.hosting.reg.ru`
		A	37.140.192.55^{🇷🇺 AS-REGRU37.140.192.0/24 Reg.Ru}
			PTR	`ns30-1.hosting.reg.ru`
		A	37.140.192.58^{🇷🇺 AS-REGRU37.140.192.0/24 Reg.Ru}
			PTR	`ns18-1.hosting.reg.ru`
		A	37.140.192.160^{🇷🇺 AS-REGRU37.140.192.0/24 Reg.Ru}
			PTR	`ns31-2.hosting.reg.ru`
		A	37.140.193.120^{🇷🇺 AS-REGRU37.140.193.0/24 Reg.Ru}
			PTR	`ns2.hosting.reg.ru`
		A	37.140.194.37^{🇷🇺 AS-REGRU37.140.194.0/24 Reg.Ru}
			PTR	`ns38-2.hosting.reg.ru`
		A	194.67.73.7^{🇷🇺 AS-REGRU194.67.73.0/24 Reg.Ru-M9}
			PTR	`ns33-2.hosting.reg.ru`
		A	194.67.73.8^{🇷🇺 AS-REGRU194.67.73.0/24 Reg.Ru-M9}
			PTR	`ns34-1.hosting.reg.ru`
MX	`mx1.hosting.reg.ru` ⭐
		A	31.31.194.240^{🇷🇺 AS-REGRU31.31.194.0/24 Reg.Ru}
			PTR	`relay.hosting.reg.ru`
		A	31.31.194.241^{🇷🇺 AS-REGRU31.31.194.0/24 Reg.Ru}
			PTR	`relay.hosting.reg.ru`
MX	`mx2.hosting.reg.ru`⁽²⁰⁾
		A	31.31.194.240^{🇷🇺 AS-REGRU31.31.194.0/24 Reg.Ru}
			PTR	`relay.hosting.reg.ru`
		A	31.31.194.241^{🇷🇺 AS-REGRU31.31.194.0/24 Reg.Ru}
			PTR	`relay.hosting.reg.ru`
TXT	`v=spf1 ip4:37.140.192.35 a mx include:_spf.hosting.reg.ru ~all`
SOA	`server220.hosting.reg.ru`support@reg.ru 2025-10-06 #4

`su`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.ripn.net` ⭐
	NS	`b.dns.ripn.net`
	NS	`d.dns.ripn.net`
	NS	`e.dns.ripn.net`
	NS	`f.dns.ripn.net`
	SOA	`a.dns.ripn.net`hostmaster@ripn.net serial=650209670

Same first word

Similar names

trustronic.com

trutronics.com

trutronics.org

trutronics.us

DNS History

16 records (7 active, 9 former)

○NSdns.fastdns24.com2015-08-13 → 2016-04-14 · 4 obs

● 2015-08-13 23:02:40
● 2016-04-14 09:56:24
○ 2026-03-06 18:21:08
○ 2026-06-30 23:57:22

○NSdns2.fastdns24.org2015-11-29 → 2016-04-14 · 5 obs

○ 2015-08-13 23:02:40
● 2015-11-29 06:11:30
● 2016-04-14 09:56:24
○ 2026-03-06 18:21:08
○ 2026-06-30 23:57:22

○NSdns3.fastdns24.eu2015-11-29 → 2016-04-14 · 5 obs

○ 2015-08-13 23:02:40
● 2015-11-29 06:11:30
● 2016-04-14 09:56:24
○ 2026-03-06 18:21:08
○ 2026-06-30 23:57:22

○NSdns4.fastdns24.link2015-11-29 → 2016-04-14 · 5 obs

○ 2015-08-13 23:02:40
● 2015-11-29 06:11:30
● 2016-04-14 09:56:24
○ 2026-03-06 18:21:08
○ 2026-06-30 23:57:22

○NSns1.fastvps.ru2015-08-13 → 2015-08-13 · 3 obs

● 2015-08-13 23:02:40
○ 2015-11-29 06:11:30
○ 2026-06-30 23:57:22

●NSns1.hosting.reg.ru2026-03-06 → 2026-06-30 · 3 obs

○ 2016-04-14 09:56:24
● 2026-03-06 18:21:08
● 2026-06-30 23:57:22

○NSns2.fastvps.ru2015-08-13 → 2015-08-13 · 3 obs

● 2015-08-13 23:02:40
○ 2015-11-29 06:11:30
○ 2026-06-30 23:57:22

●NSns2.hosting.reg.ru2026-03-06 → 2026-06-30 · 3 obs

○ 2016-04-14 09:56:24
● 2026-03-06 18:21:08
● 2026-06-30 23:57:22

○NSns3.fastvps.ru2015-08-13 → 2015-08-13 · 3 obs

● 2015-08-13 23:02:40
○ 2015-11-29 06:11:30
○ 2026-06-30 23:57:22

○NSns4.fastvps.ru2015-08-13 → 2015-08-13 · 3 obs

● 2015-08-13 23:02:40
○ 2015-11-29 06:11:30
○ 2026-06-30 23:57:22

●NSserver220.hosting.reg.ru2026-03-06 → 2026-06-30 · 3 obs

○ 2016-04-14 09:56:24
● 2026-03-06 18:21:08
● 2026-06-30 23:57:22

●MXmx1.hosting.reg.ru2026-03-06 → 2026-06-30 · 2 obs

● 2026-03-06 18:21:08
● 2026-06-30 23:57:22

●MXmx2.hosting.reg.ru2026-03-06 → 2026-06-30 · 2 obs

● 2026-03-06 18:21:08
● 2026-06-30 23:57:22

●A2a00:f940:2:2:1:1:0:2202026-03-06 → 2026-06-30 · 3 obs

○ 2016-04-14 09:56:24
● 2026-03-06 18:21:08
● 2026-06-30 23:57:22

●A37.140.192.352026-03-06 → 2026-06-30 · 3 obs

○ 2016-04-14 09:56:24
● 2026-03-06 18:21:08
● 2026-06-30 23:57:22

○A5.45.112.1942015-08-13 → 2016-04-14 · 4 obs

● 2015-08-13 23:02:40
● 2016-04-14 09:56:24
○ 2026-03-06 18:21:08
○ 2026-06-30 23:57:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
su	a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net...	-
instructor.su	ns1.hosting.reg.ru, ns2.hosting.reg.ru	-

✅ Authoritative Response

Server:31.31.194.245

NS records: ns1.hosting.reg.ru, ns2.hosting.reg.ru

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for instructor.su (unsigned zone)

⏱️ Timing

Total: 1282ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`37.140.192.35`
AAAA	1	`2a00:f940:2:2:1:1:0:220`
NS	2	`ns1.hosting.reg.ru, ns2.hosting.reg.ru`
MX	2	`mx1.hosting.reg.ru (pri: 10), mx2.hosting.reg.ru (pri: 20)`
TXT	1	`v=spf1 ip4:37.140.192.35 a mx include:_s`
SOA	1	`server220.hosting.reg.ru support.reg.ru`

Analysis

IP Addresses

instructor.su points to the IP addresses 37.140.192.35 and 2a00:f940:2:2:1:1:0:220

Two other host names, along with lifecoins.ru, paintedcrystal.com and ech.su, also share IP numbers with instructor.su.

Name Servers

instructor.su is served by three name servers: ns1.hosting.reg.ru, ns2.hosting.reg.ru and server220.hosting.reg.ru.

At least some of instructor.su's name servers are shared with other domains, for example centershtor.ru, kalinkowo.ru, clickreg.ru and two more.

These name servers tend to co-occur with server256.hosting.reg.ru, server216.hosting.reg.ru, server152.hosting.reg.ru and 4 other name servers in the same DNS delegations.

DNS names with 14 IP addresses:

ns1.hosting.reg.ru maps to 31.31.194.245, 31.31.194.251, 31.31.196.37 and 11 additional IP addresses.

ns2.hosting.reg.ru maps to 31.31.194.244, 31.31.196.34, 31.31.196.53 and 11 additional IP addresses.

Host names that point to one IP address:

server220.hosting.reg.ru resolves to the IP address 37.140.192.35.

Mail Servers

instructor.su is served by two mail servers, mx1.hosting.reg.ru and mx2.hosting.reg.ru.

Among the domains sharing a mail server setup with instructor.su are mot23.ru, digitalroad.org, urupvkh.ru and two others.

At least a portion of instructor.su's mail servers are shared with other domains, among them ux-design.ru and mis-s.ru.

mx1.hosting.reg.ru has IP addresses 31.31.194.240 and 31.31.194.241; mx2.hosting.reg.ru has the same IP addresses: 31.31.194.240 and 31.31.194.241.

mx1.hosting.reg.ru and mx2.hosting.reg.ru each have 31.31.194.240 IP addresses.

mx1.hosting.reg.ru and mx2.hosting.reg.ru each have 31.31.194.241 IP addresses.