🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`rubycourses.ru`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:b8f2^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:1324^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.19.36^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.184.242^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cleo.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b59^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cleo.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c159^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cleo.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2159^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cleo.ns.cloudflare.com`
		A	108.162.193.89^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cleo.ns.cloudflare.com`
		A	172.64.33.89^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cleo.ns.cloudflare.com`
		A	173.245.59.89^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cleo.ns.cloudflare.com`
NS	`tegan.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ae2^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tegan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0e2^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tegan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20e2^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tegan.ns.cloudflare.com`
		A	108.162.192.226^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tegan.ns.cloudflare.com`
		A	172.64.32.226^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tegan.ns.cloudflare.com`
		A	173.245.58.226^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tegan.ns.cloudflare.com`
MX	`mx.yandex.net` ⭐
		A	2a02:6b8::311^{🇷🇺 TELETECH2a02:6b8::/32 Yandex network}
			PTR	`mxfront.stable.qloud-b.yandex.net`
		A	77.88.21.249^{🇷🇺 TELETECH77.88.0.0/18 Yandex enterprise network}
			PTR	`mxfront.stable.qloud-b.yandex.net`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.19.36, 172.67.184.242
		IPv6 hints	2606:4700:3032::ac43:b8f2, 2606:4700:3033::6815:1324
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=127, name=cloudflare-ech.com
SOA	`cleo.ns.cloudflare.com`dns@cloudflare.com serial=2414077028

`ru`

	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=4070684

Same first word

rubycourses.ru

Previous names

ruby939374.ru

rubyalley.ru

rubyapp.ru

rubyarin.ru

rubyart.ru

rubybed.ru

rubybistro.ru

rubyblog.ru

rubybox.ru

rubycar.ru

rubycash.ru

rubycloudacademy.ru

rubycloudmasters.ru

rubyco.ru

rubycode.ru

rubycom.ru

rubyconf.ru

Next names

rubycrown.ru

rubydecor.ru

rubydemo.ru

rubydev.ru

rubydevil.ru

rubydos.ru

rubydrop.ru

rubyenergy.ru

rubyfires.ru

rubyflame.ru

rubyfox.ru

rubygecko.ru

rubyhorizon.ru

DNS History

20 records (7 active, 13 former)

○NSchris.ns.cloudflare.com2017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 14:53:14
○ 2018-10-23 12:03:46
○ 2026-10-11 13:36:46

●NScleo.ns.cloudflare.com2026-09-20 → 2026-10-11 · 3 obs

○ 2018-10-23 12:03:46
● 2026-09-20 03:32:54
● 2026-10-11 13:36:46

○NScoco.ns.cloudflare.com2017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 14:53:14
○ 2018-10-23 12:03:46
○ 2026-10-11 13:36:46

○NSns1.vscale.io2018-10-23 → 2018-10-23 · 4 obs

○ 2017-03-16 14:53:14
● 2018-10-23 12:03:46
○ 2026-09-20 03:32:54
○ 2026-10-11 13:36:46

○NSns2.vscale.io2018-10-23 → 2018-10-23 · 4 obs

○ 2017-03-16 14:53:14
● 2018-10-23 12:03:46
○ 2026-09-20 03:32:54
○ 2026-10-11 13:36:46

●NStegan.ns.cloudflare.com2026-09-20 → 2026-10-11 · 3 obs

○ 2018-10-23 12:03:46
● 2026-09-20 03:32:54
● 2026-10-11 13:36:46

●MXmx.yandex.net2018-10-23 → 2026-10-11 · 2 obs

● 2018-10-23 12:03:46
● 2026-10-11 13:36:46

●A104.21.19.362026-09-28 → 2026-10-11 · 3 obs

○ 2026-09-20 03:32:54
● 2026-09-28 01:44:12
● 2026-10-11 13:36:46

○A104.31.72.272017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 14:53:14
○ 2018-10-23 12:03:46
○ 2026-10-11 13:36:46

○A104.31.73.272017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 14:53:14
○ 2018-10-23 12:03:46
○ 2026-10-11 13:36:46

●A172.67.184.2422026-09-28 → 2026-10-11 · 3 obs

○ 2026-09-20 03:32:54
● 2026-09-28 01:44:12
● 2026-10-11 13:36:46

○A188.114.96.02026-09-20 → 2026-09-20 · 4 obs

○ 2018-10-23 12:03:46
● 2026-09-20 03:32:54
○ 2026-09-28 01:44:12
○ 2026-10-11 13:36:46

○A188.114.97.02026-09-20 → 2026-09-20 · 4 obs

○ 2018-10-23 12:03:46
● 2026-09-20 03:32:54
○ 2026-09-28 01:44:12
○ 2026-10-11 13:36:46

○A2400:cb00:2048:1::681f:481b2017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 14:53:14
○ 2018-10-23 12:03:46
○ 2026-10-11 13:36:46

○A2400:cb00:2048:1::681f:491b2017-03-16 → 2017-03-16 · 3 obs

● 2017-03-16 14:53:14
○ 2018-10-23 12:03:46
○ 2026-10-11 13:36:46

●A2606:4700:3032::ac43:b8f22026-09-28 → 2026-10-11 · 3 obs

○ 2026-09-20 03:32:54
● 2026-09-28 01:44:12
● 2026-10-11 13:36:46

●A2606:4700:3033::6815:13242026-09-28 → 2026-10-11 · 3 obs

○ 2026-09-20 03:32:54
● 2026-09-28 01:44:12
● 2026-10-11 13:36:46

○A2a06:98c1:3120::2026-09-20 → 2026-09-20 · 4 obs

○ 2018-10-23 12:03:46
● 2026-09-20 03:32:54
○ 2026-09-28 01:44:12
○ 2026-10-11 13:36:46

○A2a06:98c1:3121::2026-09-20 → 2026-09-20 · 4 obs

○ 2018-10-23 12:03:46
● 2026-09-20 03:32:54
○ 2026-09-28 01:44:12
○ 2026-10-11 13:36:46

○A82.202.221.2172018-10-23 → 2018-10-23 · 4 obs

○ 2017-03-16 14:53:14
● 2018-10-23 12:03:46
○ 2026-09-20 03:32:54
○ 2026-10-11 13:36:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ru	a.dns.ripn.net, b.dns.ripn.net, c.tld-servers.ru, d.dns.ripn.net...	-
rubycourses.ru	cleo.ns.cloudflare.com, tegan.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.226

NS records: cleo.ns.cloudflare.com, tegan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rubycourses.ru (unsigned zone)

⏱️ Timing

Total: 764ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.184.242, 104.21.19.36`
AAAA	2	`2606:4700:3033::6815:1324, 2606:4700:3032::ac43:b8f2`
NS	2	`cleo.ns.cloudflare.com, tegan.ns.cloudflare.com`
MX	1	`mx.yandex.net (pri: 10)`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cleo.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

rubycourses.ru has four IP addresses: 104.21.19.36, 172.67.184.242, 2606:4700:3032::ac43:b8f2 and 2606:4700:3033::6815:1324.

neuralar.live, philuckyapk.net, anonymail.cfd plus two other host names have IP numbers in common with rubycourses.ru.

Name Servers

rubycourses.ru is served by two delegated name servers, cleo.ns.cloudflare.com and tegan.ns.cloudflare.com.

The name server configuration of rubycourses.ru is shared with other domains, for instance sarnagati.com, casinowyns-de.de, wisdomkking.pages.dev and two others.

rubycourses.ru partially shares its NS delegation with several other domains, including acsofficeinteriors.co.uk, sebastien-thuret.fr, biomahdizist.workers.dev and two others.

These name servers tend to appear together with the name servers mustafa.ns.cloudflare.com, sandra.ns.cloudflare.com and wren.ns.cloudflare.com, plus two others.

Hosts with 6 IP addresses each:

cleo.ns.cloudflare.com carries IP addresses 108.162.193.89, 172.64.33.89 and 173.245.59.89, with 3 other addresses beyond those.

tegan.ns.cloudflare.com carries IP addresses 108.162.192.226, 172.64.32.226 and 173.245.58.226, with 3 other addresses beyond those.

Mail Servers

rubycourses.ru uses one mail server — mx.yandex.net.

The mail server setup of rubycourses.ru matches that of other domains such as gainora-fr.com, flavikerpisa.ru, aura-cosmetics.kg and two others.

The MX records for rubycourses.ru are at least partially shared with other domains, such as 3dprefabrik.com.tr, easyway24.ru, istokprint.ru and manushop.ru.

The host mx.yandex.net resolves to 77.88.21.249 and 2a02:6b8::311 — two IP addresses.

rubycourses.ru - robtex.com

rubycourses.ru

ru

Same first word

Previous names

Next names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`rubycourses.ru`

`ru`