opencpu.org - dns.ninja

`opencpu.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:8973^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:4ecc^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.78.204^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.137.115^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`igor.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b77^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`igor.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c177^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`igor.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2177^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`igor.ns.cloudflare.com`
		A	108.162.193.119^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`igor.ns.cloudflare.com`
		A	172.64.33.119^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`igor.ns.cloudflare.com`
		A	173.245.59.119^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`igor.ns.cloudflare.com`
NS	`kara.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a7b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c07b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:207b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kara.ns.cloudflare.com`
		A	108.162.192.123^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kara.ns.cloudflare.com`
		A	172.64.32.123^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kara.ns.cloudflare.com`
		A	173.245.58.123^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kara.ns.cloudflare.com`
MX	`route3.mx.cloudflare.net` ⭐
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route1.mx.cloudflare.net`⁽⁵⁵⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽⁹¹⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.78.204, 172.67.137.115
		IPv6 hints	2606:4700:3033::ac43:8973, 2606:4700:3034::6815:4ecc
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=53, name=cloudflare-ech.com
SOA	`igor.ns.cloudflare.com`dns@cloudflare.com serial=2410914525

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1786195692

Subdomains

www.opencpu.org

Same first word

opencpu.github.io

opencpu.com

opencpu.org

Similar names

opencup.net

opencup.vn

econpup.com

opencup.it

cuppone.ru

opencup.ru

opencup.gov.it

opencup.org

opencup.com

cuppone.com

DNS History

27 records (9 active, 18 former)

●NSigor.ns.cloudflare.com2015-08-20 → 2026-08-08 · 2 obs

● 2015-08-20 17:03:24
● 2026-08-08 14:01:08

●NSkara.ns.cloudflare.com2015-08-20 → 2026-08-08 · 2 obs

● 2015-08-20 17:03:24
● 2026-08-08 14:01:08

○MXalt1.aspmx.l.google.com2015-08-20 → 2020-03-23 · 4 obs

● 2015-08-20 17:03:24
● 2020-03-23 15:15:00
○ 2026-02-14 16:22:16
○ 2026-08-08 14:01:08

○MXalt2.aspmx.l.google.com2015-08-20 → 2020-03-23 · 4 obs

● 2015-08-20 17:03:24
● 2020-03-23 15:15:00
○ 2026-02-14 16:22:16
○ 2026-08-08 14:01:08

○MXaspmx.l.google.com2015-08-20 → 2020-03-23 · 4 obs

● 2015-08-20 17:03:24
● 2020-03-23 15:15:00
○ 2026-02-14 16:22:16
○ 2026-08-08 14:01:08

○MXaspmx2.googlemail.com2015-08-20 → 2020-03-23 · 4 obs

● 2015-08-20 17:03:24
● 2020-03-23 15:15:00
○ 2026-02-14 16:22:16
○ 2026-08-08 14:01:08

○MXaspmx3.googlemail.com2015-08-20 → 2020-03-23 · 4 obs

● 2015-08-20 17:03:24
● 2020-03-23 15:15:00
○ 2026-02-14 16:22:16
○ 2026-08-08 14:01:08

○MXaspmx4.googlemail.com2015-08-20 → 2020-03-23 · 4 obs

● 2015-08-20 17:03:24
● 2020-03-23 15:15:00
○ 2026-02-14 16:22:16
○ 2026-08-08 14:01:08

○MXaspmx5.googlemail.com2015-08-20 → 2020-03-23 · 4 obs

● 2015-08-20 17:03:24
● 2020-03-23 15:15:00
○ 2026-02-14 16:22:16
○ 2026-08-08 14:01:08

●MXroute1.mx.cloudflare.net2026-02-14 → 2026-08-08 · 3 obs

○ 2020-03-23 15:15:00
● 2026-02-14 16:22:16
● 2026-08-08 14:01:08

●MXroute2.mx.cloudflare.net2026-02-14 → 2026-08-08 · 3 obs

○ 2020-03-23 15:15:00
● 2026-02-14 16:22:16
● 2026-08-08 14:01:08

●MXroute3.mx.cloudflare.net2026-02-14 → 2026-08-08 · 3 obs

○ 2020-03-23 15:15:00
● 2026-02-14 16:22:16
● 2026-08-08 14:01:08

●A104.21.78.2042026-02-14 → 2026-08-08 · 3 obs

○ 2020-03-23 15:15:00
● 2026-02-14 16:22:16
● 2026-08-08 14:01:08

○A104.27.152.182016-04-09 → 2020-03-23 · 5 obs

○ 2016-01-17 06:45:42
● 2016-04-09 15:56:18
● 2020-03-23 15:15:00
○ 2026-02-14 16:22:16
○ 2026-08-08 14:01:08

○A104.27.153.182016-04-09 → 2020-03-23 · 5 obs

○ 2016-01-17 06:45:42
● 2016-04-09 15:56:18
● 2020-03-23 15:15:00
○ 2026-02-14 16:22:16
○ 2026-08-08 14:01:08

○A104.28.2.502015-08-20 → 2016-01-17 · 4 obs

● 2015-08-20 17:03:24
● 2016-01-17 06:45:42
○ 2016-04-09 15:56:18
○ 2026-08-08 14:01:08

○A104.28.3.502015-08-20 → 2016-01-17 · 4 obs

● 2015-08-20 17:03:24
● 2016-01-17 06:45:42
○ 2016-04-09 15:56:18
○ 2026-08-08 14:01:08

●A172.67.137.1152026-02-14 → 2026-08-08 · 3 obs

○ 2020-03-23 15:15:00
● 2026-02-14 16:22:16
● 2026-08-08 14:01:08

○A2400:cb00:2048:1::681b:98122016-04-09 → 2016-12-04 · 5 obs

○ 2016-01-17 06:45:42
● 2016-04-09 15:56:18
● 2016-12-04 10:34:32
○ 2020-03-23 15:15:00
○ 2026-08-08 14:01:08

○A2400:cb00:2048:1::681b:99122016-04-09 → 2016-12-04 · 5 obs

○ 2016-01-17 06:45:42
● 2016-04-09 15:56:18
● 2016-12-04 10:34:32
○ 2020-03-23 15:15:00
○ 2026-08-08 14:01:08

○A2400:cb00:2048:1::681c:2322015-08-20 → 2016-01-17 · 4 obs

● 2015-08-20 17:03:24
● 2016-01-17 06:45:42
○ 2016-04-09 15:56:18
○ 2026-08-08 14:01:08

○A2400:cb00:2048:1::681c:3322015-08-20 → 2016-01-17 · 4 obs

● 2015-08-20 17:03:24
● 2016-01-17 06:45:42
○ 2016-04-09 15:56:18
○ 2026-08-08 14:01:08

●A2606:4700:3033::ac43:89732026-02-14 → 2026-08-08 · 3 obs

○ 2020-03-23 15:15:00
● 2026-02-14 16:22:16
● 2026-08-08 14:01:08

●A2606:4700:3034::6815:4ecc2026-08-08 → 2026-08-08 · 2 obs

○ 2026-06-11 13:47:08
● 2026-08-08 14:01:08

○A2606:4700:3035::6815:4ecc2026-02-14 → 2026-06-11 · 4 obs

○ 2020-03-23 15:15:00
● 2026-02-14 16:22:16
● 2026-06-11 13:47:08
○ 2026-08-08 14:01:08

○A2606:4700:3035::681b:98122020-03-23 → 2020-03-23 · 4 obs

○ 2016-12-04 10:34:32
● 2020-03-23 15:15:00
○ 2026-02-14 16:22:16
○ 2026-08-08 14:01:08

○A2606:4700:3037::681b:99122020-03-23 → 2020-03-23 · 4 obs

○ 2016-12-04 10:34:32
● 2020-03-23 15:15:00
○ 2026-02-14 16:22:16
○ 2026-08-08 14:01:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-
opencpu.org	kara.ns.cloudflare.com, igor.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.123

NS records: kara.ns.cloudflare.com, igor.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opencpu.org (unsigned zone)

⏱️ Timing

Total: 417ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.137.115, 104.21.78.204`
AAAA	2	`2606:4700:3034::6815:4ecc, 2606:4700:3033::ac43:8973`
NS	2	`igor.ns.cloudflare.com, kara.ns.cloudflare.com`
MX	3	`route3.mx.cloudflare.net (pri: 36), route1.mx.cloudflare.net (pri: 55)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`igor.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

opencpu.org serves as the parent of www.opencpu.org.

IP Addresses

opencpu.org resolves to four IP addresses: 104.21.78.204, 172.67.137.115, 2606:4700:3033::ac43:8973 and 2606:4700:3034::6815:4ecc.

Additional host names — mail.xn--b1aag2bbq.xn--p1ai, ealonmembrane.com, trade-trojan.com and two others — share IP numbers with opencpu.org.

Name Servers

opencpu.org is served by two delegated name servers, igor.ns.cloudflare.com and kara.ns.cloudflare.com.

opencpu.org shares its name server setup with other domains, including globalautosports.com, stenic.io, iklandb.com and two others.

opencpu.org has at least partial name server overlap with other domains, such as unbelievable.digital, mandalatribal.com, lorscheider.eu and two others.

These name servers tend to appear together with the name servers peyton.ns.cloudflare.com, sara.ns.cloudflare.com and theo.ns.cloudflare.com.

Host names with 6 IP numbers:

igor.ns.cloudflare.com carries IP addresses 108.162.193.119, 172.64.33.119 and 173.245.59.119, with 3 other addresses beyond those.

kara.ns.cloudflare.com carries IP addresses 108.162.192.123, 172.64.32.123 and 173.245.58.123, with 3 other addresses beyond those.

Mail Servers

opencpu.org has three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

opencpu.org shares mail servers — at least in part — with other domains, including lawyersweekly.com.au, brazilianbikinishop.it, hsatac.net and two others.

Host names with 6 IP numbers:

route1.mx.cloudflare.net carries IP addresses 162.159.205.11, 162.159.205.12 and 162.159.205.13, with 3 other addresses beyond those.

route2.mx.cloudflare.net carries IP addresses 162.159.205.17, 162.159.205.18 and 162.159.205.19, with 3 other addresses beyond those.

route3.mx.cloudflare.net carries IP addresses 162.159.205.23, 162.159.205.24 and 162.159.205.25, with 3 other addresses beyond those.