`usability-master.ru`

DNSSEC	⚠️ Not signed
A	217.29.62.235^{🇷🇺 OKBPROGRESS217.29.62.0/24}
NS	`server109.servera.info` ⭐
		A	217.29.62.235^{🇷🇺 OKBPROGRESS217.29.62.0/24}
NS	`ns1.example.com` ⚠️ Not in parent delegation
NS	`ns1.nocsu.com` ⚠️ Not in zone NS records
		A	37.228.92.2^{🇷🇺 MTW-AS37.228.92.0/24 JSC MTW.RU}
NS	`ns2.example.com` ⚠️ Not in parent delegation
NS	`ns2.nocsu.com` ⚠️ Not in zone NS records
		A	81.177.26.96^{🇷🇺 RTCOMM-AS81.177.0.0/19 RTCOMM-RU}
			PTR	`ns2.nocsu.com`
MX	`mail.usability-master.ru` ⭐
		A	217.29.62.235^{🇷🇺 OKBPROGRESS217.29.62.0/24}
TXT	`v=spf1 ip4:217.29.62.235 a mx ~all`
SOA	`server109.servera.info`root@example.com 2026-01-25 #12

`ru`

	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=4068147

Subdomains

mail.usability-master.ru

Same first word

usability-master.ru

DNS History

19 records (7 active, 12 former)

○NSns.masterhost.ru2015-08-13 → 2017-06-10 · 4 obs

● 2015-08-13 15:36:30
● 2017-06-10 19:43:42
○ 2026-02-16 08:34:46
○ 2026-03-24 04:53:42

●NSns1.example.com2026-02-16 → 2026-03-24 · 3 obs

○ 2017-06-10 19:43:42
● 2026-02-16 08:34:46
● 2026-03-24 04:53:42

○NSns1.masterhost.ru2015-08-13 → 2017-06-10 · 4 obs

● 2015-08-13 15:36:30
● 2017-06-10 19:43:42
○ 2026-02-16 08:34:46
○ 2026-03-24 04:53:42

●NSns1.nocsu.com2026-02-16 → 2026-03-24 · 3 obs

○ 2017-06-10 19:43:42
● 2026-02-16 08:34:46
● 2026-03-24 04:53:42

●NSns2.example.com2026-02-16 → 2026-03-24 · 3 obs

○ 2017-06-10 19:43:42
● 2026-02-16 08:34:46
● 2026-03-24 04:53:42

○NSns2.masterhost.ru2015-08-13 → 2017-06-10 · 4 obs

● 2015-08-13 15:36:30
● 2017-06-10 19:43:42
○ 2026-02-16 08:34:46
○ 2026-03-24 04:53:42

●NSns2.nocsu.com2026-02-16 → 2026-03-24 · 3 obs

○ 2017-06-10 19:43:42
● 2026-02-16 08:34:46
● 2026-03-24 04:53:42

●NSserver109.servera.info2026-02-16 → 2026-03-24 · 3 obs

○ 2017-06-10 19:43:42
● 2026-02-16 08:34:46
● 2026-03-24 04:53:42

●MXmail.usability-master.ru2026-02-16 → 2026-03-24 · 3 obs

○ 2017-06-10 19:43:42
● 2026-02-16 08:34:46
● 2026-03-24 04:53:42

○MXmx1.masterhost.ru2015-08-13 → 2017-06-10 · 4 obs

● 2015-08-13 15:36:30
● 2017-06-10 19:43:42
○ 2026-02-16 08:34:46
○ 2026-03-24 04:53:42

●A217.29.62.2352026-02-16 → 2026-03-24 · 3 obs

○ 2017-06-10 19:43:42
● 2026-02-16 08:34:46
● 2026-03-24 04:53:42

○A2a00:15f8:a000:5:1:11:1:710c2015-08-13 → 2017-06-10 · 4 obs

● 2015-08-13 15:36:30
● 2017-06-10 19:43:42
○ 2026-02-16 08:34:46
○ 2026-03-24 04:53:42

○A2a00:15f8:a000:5:1:12:1:710c2015-08-13 → 2017-06-10 · 4 obs

● 2015-08-13 15:36:30
● 2017-06-10 19:43:42
○ 2026-02-16 08:34:46
○ 2026-03-24 04:53:42

○A2a00:15f8:a000:5:1:13:1:710c2015-08-13 → 2017-06-10 · 4 obs

● 2015-08-13 15:36:30
● 2017-06-10 19:43:42
○ 2026-02-16 08:34:46
○ 2026-03-24 04:53:42

○A2a00:15f8:a000:5:1:14:1:710c2015-08-13 → 2017-06-10 · 4 obs

● 2015-08-13 15:36:30
● 2017-06-10 19:43:42
○ 2026-02-16 08:34:46
○ 2026-03-24 04:53:42

○A90.156.201.462015-08-13 → 2017-06-10 · 4 obs

● 2015-08-13 15:36:30
● 2017-06-10 19:43:42
○ 2026-02-16 08:34:46
○ 2026-03-24 04:53:42

○A90.156.201.482015-08-13 → 2017-06-10 · 4 obs

● 2015-08-13 15:36:30
● 2017-06-10 19:43:42
○ 2026-02-16 08:34:46
○ 2026-03-24 04:53:42

○A90.156.201.772015-08-13 → 2017-06-10 · 4 obs

● 2015-08-13 15:36:30
● 2017-06-10 19:43:42
○ 2026-02-16 08:34:46
○ 2026-03-24 04:53:42

○A90.156.201.872015-08-13 → 2017-06-10 · 4 obs

● 2015-08-13 15:36:30
● 2017-06-10 19:43:42
○ 2026-02-16 08:34:46
○ 2026-03-24 04:53:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ru	a.dns.ripn.net, b.dns.ripn.net, e.dns.ripn.net, d.dns.ripn.net...	-
usability-master.ru	ns1.nocsu.com, ns2.nocsu.com	-

✅ Authoritative Response

Server:37.228.92.2

NS records: ns1.nocsu.com, ns2.nocsu.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for usability-master.ru (unsigned zone)

⏱️ Timing

Total: 1532ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`217.29.62.235`
NS	2	`ns1.example.com, ns2.example.com`
MX	2	`mail.usability-master.ru (pri: 10), mail.usability-master.ru (pri: 20)`
TXT	1	`v=spf1 ip4:217.29.62.235 a mx ~all`
SOA	1	`server109.servera.info root.example.com`

Analysis

Hierarchy

mail.usability-master.ru is a child of usability-master.ru.

IP Addresses

usability-master.ru resolves to one IP number: 217.29.62.235.

Other host names, for instance mail.levelminus.ru, mail.polyglot-center.ru, filmas-2024.ru, detyamporadomoy.ru and zcharboard.ru share IP numbers with usability-master.ru.

Name Servers

usability-master.ru is delegated to five name servers: ns1.example.com, ns2.example.com, ns1.nocsu.com, ns2.nocsu.com and server109.servera.info.

usability-master.ru at least partially shares name servers with other domains, including city58.ru, 1win-be8.top, cazino-vodka.ru, film3d.club and vavada-pqic.top.

These name servers are commonly used with srv0592.inferno.name, server88.servera.info, ns3.zomro.com, ns1.zomro.net, ns2.zomro.ru, ns4.zomro.su, v532440978.local, ns1.firstvds.ru, ns2.firstvds.ru and server87.servera.info.

Host names with a single IP:

ns1.nocsu.com points to 37.228.92.2; ns2.nocsu.com points to 81.177.26.96; server109.servera.info points to 217.29.62.235.

Mail Servers

A single mail server handles usability-master.ru, mail.usability-master.ru.

Host name mail.usability-master.ru resolves to a single IP: 217.29.62.235.

usability-master.ru - robtex.com