`prof77.ru`

DNSSEC	⚠️ Not signed
A	31.31.198.182^{🇷🇺 AS-REGRU31.31.198.0/24 Reg.Ru}
		PTR	`scp89.hosting.reg.ru`
NS	`ns1.agava.net.ru` ⭐
		A	2a00:f940:4::47^{🇷🇺 AS-REGRU2a00:f940:4::/48 Reg.Ru SRS Infrastructure Route}
			PTR	`ns1.reg.ru`
		A	194.58.117.11^{🇷🇺 AS-REGRU194.58.117.0/24 Reg.Ru}
			PTR	`ns1.reg.ru`
NS	`ns2.agava.net.ru`
		A	2a00:f940:5::190^{🇷🇺 AS-REGRU2a00:f940:5::/48 Reg.Ru SRS Infrastructure Route}
			PTR	`ns2.reg.ru`
		A	194.58.117.12^{🇷🇺 AS-REGRU194.58.117.0/24 Reg.Ru}
			PTR	`ns2.reg.ru`
MX	`cluster.relay.agava.net` ⭐
		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`
SOA	`ns1.agava.net.ru`hostmaster@ns1.agava.net.ru serial=1753551251

`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=4068844

Subdomains

knigi.prof77.ru

Same first word

prof77.ru

DNS History

11 records (4 active, 7 former)

●NSns1.agava.net.ru2015-05-18 → 2026-05-12 · 5 obs

● 2015-05-18 08:36:02
○ 2015-10-18 08:05:46
○ 2017-04-24 11:40:10
● 2026-04-25 03:38:58
● 2026-05-12 06:58:32

○NSns1.agava.ru2015-10-18 → 2016-09-14 · 5 obs

○ 2015-05-18 08:36:02
● 2015-10-18 08:05:46
● 2016-09-14 19:43:58
○ 2017-04-24 11:40:10
○ 2026-05-12 06:58:32

○NSns1.reg.ru2017-04-24 → 2017-04-24 · 4 obs

○ 2016-09-14 19:43:58
● 2017-04-24 11:40:10
○ 2026-04-25 03:38:58
○ 2026-05-12 06:58:32

●NSns2.agava.net.ru2015-05-18 → 2026-05-12 · 5 obs

● 2015-05-18 08:36:02
○ 2015-10-18 08:05:46
○ 2017-04-24 11:40:10
● 2026-04-25 03:38:58
● 2026-05-12 06:58:32

○NSns2.agava.ru2015-10-18 → 2016-09-14 · 5 obs

○ 2015-05-18 08:36:02
● 2015-10-18 08:05:46
● 2016-09-14 19:43:58
○ 2017-04-24 11:40:10
○ 2026-05-12 06:58:32

○NSns2.reg.ru2017-04-24 → 2017-04-24 · 4 obs

○ 2016-09-14 19:43:58
● 2017-04-24 11:40:10
○ 2026-04-25 03:38:58
○ 2026-05-12 06:58:32

●MXcluster.relay.agava.net2015-05-18 → 2026-05-12 · 2 obs

● 2015-05-18 08:36:02
● 2026-05-12 06:58:32

○A2a03:4900:0:6037:80:78:250:1192015-10-18 → 2017-04-24 · 5 obs

○ 2015-05-18 08:36:02
● 2015-10-18 08:05:46
● 2017-04-24 11:40:10
○ 2026-04-25 03:38:58
○ 2026-05-12 06:58:32

●A31.31.198.1822026-04-25 → 2026-05-12 · 3 obs

○ 2017-04-24 11:40:10
● 2026-04-25 03:38:58
● 2026-05-12 06:58:32

○A80.78.250.1192015-10-18 → 2017-04-24 · 5 obs

○ 2015-05-18 08:36:02
● 2015-10-18 08:05:46
● 2017-04-24 11:40:10
○ 2026-04-25 03:38:58
○ 2026-05-12 06:58:32

○A89.108.67.772015-05-18 → 2015-05-18 · 3 obs

● 2015-05-18 08:36:02
○ 2015-10-18 08:05:46
○ 2026-05-12 06:58:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ru	a.dns.ripn.net, d.dns.ripn.net, f.dns.ripn.net, b.dns.ripn.net...	-
prof77.ru	ns1.agava.net.ru, ns2.agava.net.ru	-

✅ Authoritative Response

Server:194.58.117.11

NS records: ns1.agava.net.ru, ns2.agava.net.ru

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for prof77.ru (unsigned zone)

⏱️ Timing

Total: 1178ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`31.31.198.182`
NS	2	`ns1.agava.net.ru, ns2.agava.net.ru`
MX	1	`cluster.relay.agava.net (pri: 10)`
SOA	1	`ns1.agava.net.ru hostmaster.ns1.agava.ne`

Analysis

Hierarchy

prof77.ru is the parent of knigi.prof77.ru.

IP Addresses

prof77.ru resolves to a single IP address: 31.31.198.182.

Other host names including blogs.www.m2-spb.ru, sabaneev.ru, sheya.ru, a17-250-248-150.m2-spb.ru and smio.ru share IP numbers with prof77.ru.

Name Servers

prof77.ru's delegation uses two name servers, ns1.agava.net.ru and ns2.agava.net.ru.

prof77.ru shares the same name server setup as other domains, for example retroisland.net, vvhbk.ru, bivouac.ru, podemcentr.ru and isoseroclon.com.

prof77.ru at least partially shares name servers with other domains, including unidoors.com, logist-russia.ru, lamour-club.ru, nextdoc.ru and akb-technomir.ru.

These name servers are commonly used with ns1.reg.ru and ns2.reg.ru.

Host names with two IPs:

ns1.agava.net.ru points to: 2a00:f940:4::47 and 194.58.117.11

ns2.agava.net.ru points to: 2a00:f940:5::190 and 194.58.117.12

Mail Servers

prof77.ru is handled by a single mail server, cluster.relay.agava.net.

prof77.ru shares its mail server setup with other domains, including sakh-exp.com, xn--80aaeb1a3g.xn--p1ai, td-mebel.ru, pg59.ru and xn--g1ab0b.xn--80adxhks.

The mail servers for prof77.ru are shared with other domains, for instance ateh.org, tieidistant.ru, nvksi.ru, e-indep.ru and maxy.ru.

these mail servers are commonly used with aspmx.l.google.com, aspmx2.googlemail.com, aspmx3.googlemail.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.

cluster.relay.agava.net points to two IPs: 31.31.194.240 and 31.31.194.241.

prof77.ru - robtex.com

prof77.ru

ru