`opencup.ru`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:b58a^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:125e^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.18.94^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.181.138^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`mary.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a86^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mary.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c086^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mary.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2086^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mary.ns.cloudflare.com`
		A	108.162.192.134^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mary.ns.cloudflare.com`
		A	172.64.32.134^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mary.ns.cloudflare.com`
		A	173.245.58.134^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mary.ns.cloudflare.com`
NS	`terin.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bec^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`terin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1ec^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`terin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21ec^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`terin.ns.cloudflare.com`
		A	108.162.193.236^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`terin.ns.cloudflare.com`
		A	172.64.33.236^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`terin.ns.cloudflare.com`
		A	173.245.59.236^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`terin.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.18.94, 172.67.181.138
		IPv6 hints	2606:4700:3033::ac43:b58a, 2606:4700:3036::6815:125e
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=196, name=cloudflare-ech.com
SOA	`mary.ns.cloudflare.com`dns@cloudflare.com serial=2400489331

`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=4068708

WOT: SAFE (76/100)

Same first word

opencup.net

opencup.vn

opencup.cn

opencup.it

opencup.ru

opencup.gov.it

opencup.org

opencup.com

Similar names

cuppone.com

opencpu.github.io

opencpu.com

econpup.com

cuppone.ru

opencpu.org

DNS History

12 records (6 active, 6 former)

○NSdns1.yandex.net2019-12-25 → 2019-12-25 · 4 obs

○ 2017-10-17 06:21:30
● 2019-12-25 14:21:06
○ 2026-04-04 05:52:10
○ 2026-04-30 23:01:38

○NSdns1.yandex.ru2015-08-21 → 2017-10-17 · 4 obs

● 2015-08-21 09:07:54
● 2017-10-17 06:21:30
○ 2019-12-25 14:21:06
○ 2026-04-30 23:01:38

○NSdns2.yandex.net2019-12-25 → 2019-12-25 · 4 obs

○ 2017-10-17 06:21:30
● 2019-12-25 14:21:06
○ 2026-04-04 05:52:10
○ 2026-04-30 23:01:38

○NSdns2.yandex.ru2015-08-21 → 2017-10-17 · 4 obs

● 2015-08-21 09:07:54
● 2017-10-17 06:21:30
○ 2019-12-25 14:21:06
○ 2026-04-30 23:01:38

●NSmary.ns.cloudflare.com2026-04-04 → 2026-04-30 · 3 obs

○ 2019-12-25 14:21:06
● 2026-04-04 05:52:10
● 2026-04-30 23:01:38

●NSterin.ns.cloudflare.com2026-04-04 → 2026-04-30 · 3 obs

○ 2019-12-25 14:21:06
● 2026-04-04 05:52:10
● 2026-04-30 23:01:38

○MXmx1.masterhost.ru2015-08-21 → 2019-12-25 · 4 obs

● 2015-08-21 09:07:54
● 2019-12-25 14:21:06
○ 2026-04-04 05:52:10
○ 2026-04-30 23:01:38

●A104.21.18.942026-04-04 → 2026-04-30 · 3 obs

○ 2019-12-25 14:21:06
● 2026-04-04 05:52:10
● 2026-04-30 23:01:38

●A172.67.181.1382026-04-04 → 2026-04-30 · 3 obs

○ 2019-12-25 14:21:06
● 2026-04-04 05:52:10
● 2026-04-30 23:01:38

●A2606:4700:3033::ac43:b58a2026-04-04 → 2026-04-30 · 3 obs

○ 2019-12-25 14:21:06
● 2026-04-04 05:52:10
● 2026-04-30 23:01:38

●A2606:4700:3036::6815:125e2026-04-04 → 2026-04-30 · 3 obs

○ 2019-12-25 14:21:06
● 2026-04-04 05:52:10
● 2026-04-30 23:01:38

○A46.38.62.262015-08-21 → 2019-12-25 · 4 obs

● 2015-08-21 09:07:54
● 2019-12-25 14:21:06
○ 2026-04-04 05:52:10
○ 2026-04-30 23:01:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ru	f.dns.ripn.net, b.dns.ripn.net, e.dns.ripn.net, d.dns.ripn.net...	-
opencup.ru	mary.ns.cloudflare.com, terin.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.134

NS records: mary.ns.cloudflare.com, terin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opencup.ru (unsigned zone)

⏱️ Timing

Total: 1383ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.18.94, 172.67.181.138`
AAAA	2	`2606:4700:3033::ac43:b58a, 2606:4700:3036::6815:125e`
NS	2	`mary.ns.cloudflare.com, terin.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`mary.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

opencup.ru points to four IP numbers: 2606:4700:3033::ac43:b58a, 2606:4700:3036::6815:125e, 104.21.18.94 and 172.67.181.138.

Other host names including mail.djszabi.com, italianways.com, felix-verlag.de, www.8x8win.ai and www.pdaroadgear.com share IP numbers with opencup.ru.

Name Servers

opencup.ru's delegation uses two name servers, mary.ns.cloudflare.com and terin.ns.cloudflare.com.

opencup.ru shares the same name server setup as other domains, for example martinroy.ca, naulinux.ru, winbin.ru, mphuong.name.vn and formafestival.ru.

opencup.ru at least partially shares name servers with other domains, including d9883.com, 123lazienka.pl, cesvi.eu, bacwi.org and posteitaliane.help.

These name servers are commonly used with harmony.ns.cloudflare.com and izabella.ns.cloudflare.com.

Host names with six IP numbers:

mary.ns.cloudflare.com points to: 2606:4700:50::adf5:3a86, 2803:f800:50::6ca2:c086, 2a06:98c1:50::ac40:2086, 108.162.192.134, 172.64.32.134 and 173.245.58.134.

terin.ns.cloudflare.com points to: 2606:4700:58::adf5:3bec, 2803:f800:50::6ca2:c1ec, 2a06:98c1:50::ac40:21ec, 108.162.193.236, 172.64.33.236 and 173.245.59.236.

opencup.ru - robtex.com

opencup.ru

ru

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`opencup.ru`

`ru`