checking.systems - dns.ninja

`checking.systems`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:ab65^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:1d2e^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.29.46^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.171.101^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`hans.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3baf^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hans.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1af^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hans.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21af^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hans.ns.cloudflare.com`
		A	108.162.193.175^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hans.ns.cloudflare.com`
		A	172.64.33.175^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hans.ns.cloudflare.com`
		A	173.245.59.175^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hans.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	`route2.mx.cloudflare.net` ⭐
		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`
MX	`route3.mx.cloudflare.net`⁽⁵⁷⁾
		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`⁽⁹⁰⁾
		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`
TXT	`Riad Wahby (rsw@jfet.org) - checking.systems`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.29.46, 172.67.171.101
		IPv6 hints	2606:4700:3032::ac43:ab65, 2606:4700:3033::6815:1d2e
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=1, name=cloudflare-ech.com
SOA	`hans.ns.cloudflare.com`dns@cloudflare.com serial=2407673934

`systems`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.nic.systems` ⭐
	NS	`v0n1.nic.systems`
	NS	`v0n2.nic.systems`
	NS	`v0n3.nic.systems`
	NS	`v2n0.nic.systems`
	NS	`v2n1.nic.systems`
	SOA	`v0n0.nic.systems`hostmaster@donuts.email serial=1785014411

Subdomains

mx.checking.systems

Same first word

checking.vn

checking.net

checking.co.nz

checking.co

checking.us.com

checking.biz

checking.email

checking.com.mx

checking.awsapps.com

checking.com

checking.lol

checking.systems

checking.ws

checking.kr

checking.es

checking.ch

Similar names

checkngi.com

gchicken.com

DNS History

26 records (9 active, 17 former)

○NSdns.technorail.com2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-07-25 21:49:14

○NSdns2.technorail.com2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-07-25 21:49:14

○NSdns3.arubadns.net2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-07-25 21:49:14

○NSdns4.arubadns.cz2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-07-25 21:49:14

●NShans.ns.cloudflare.com2026-02-17 → 2026-07-25 · 3 obs

○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
● 2026-07-25 21:49:14

●NSkara.ns.cloudflare.com2026-02-17 → 2026-07-25 · 3 obs

○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
● 2026-07-25 21:49:14

○MXmx.checking.systems2016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-07-25 21:49:14

●MXroute1.mx.cloudflare.net2026-02-17 → 2026-07-25 · 3 obs

○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
● 2026-07-25 21:49:14

●MXroute2.mx.cloudflare.net2026-02-17 → 2026-07-25 · 3 obs

○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
● 2026-07-25 21:49:14

●MXroute3.mx.cloudflare.net2026-02-17 → 2026-07-25 · 3 obs

○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
● 2026-07-25 21:49:14

●A104.21.29.462026-02-17 → 2026-07-25 · 8 obs

○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
○ 2026-04-05 10:11:06
● 2026-04-20 20:10:08
● 2026-06-08 12:30:28
○ 2026-06-22 16:34:34
● 2026-07-07 14:02:24
● 2026-07-25 21:49:14

●A172.67.171.1012026-02-17 → 2026-07-25 · 8 obs

○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
○ 2026-04-05 10:11:06
● 2026-04-20 20:10:08
● 2026-06-08 12:30:28
○ 2026-06-22 16:34:34
● 2026-07-07 14:02:24
● 2026-07-25 21:49:14

○A188.114.96.02026-04-05 → 2026-06-22 · 7 obs

○ 2026-02-17 16:16:42
● 2026-04-05 10:11:06
○ 2026-04-20 20:10:08
○ 2026-06-08 12:30:28
● 2026-06-22 16:34:34
○ 2026-07-07 14:02:24
○ 2026-07-25 21:49:14

○A188.114.97.02026-04-05 → 2026-06-22 · 7 obs

○ 2026-02-17 16:16:42
● 2026-04-05 10:11:06
○ 2026-04-20 20:10:08
○ 2026-06-08 12:30:28
● 2026-06-22 16:34:34
○ 2026-07-07 14:02:24
○ 2026-07-25 21:49:14

●A2606:4700:3032::ac43:ab652026-07-07 → 2026-07-25 · 3 obs

○ 2026-06-22 16:34:34
● 2026-07-07 14:02:24
● 2026-07-25 21:49:14

●A2606:4700:3033::6815:1d2e2026-07-07 → 2026-07-25 · 3 obs

○ 2026-06-22 16:34:34
● 2026-07-07 14:02:24
● 2026-07-25 21:49:14

○A2606:4700:3036::ac43:ab652026-02-17 → 2026-06-08 · 7 obs

○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
○ 2026-04-05 10:11:06
● 2026-04-20 20:10:08
● 2026-06-08 12:30:28
○ 2026-06-22 16:34:34
○ 2026-07-25 21:49:14

○A2606:4700:3037::6815:1d2e2026-02-17 → 2026-06-08 · 7 obs

○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
○ 2026-04-05 10:11:06
● 2026-04-20 20:10:08
● 2026-06-08 12:30:28
○ 2026-06-22 16:34:34
○ 2026-07-25 21:49:14

○A2a06:98c1:3120::2026-04-05 → 2026-06-22 · 7 obs

○ 2026-02-17 16:16:42
● 2026-04-05 10:11:06
○ 2026-04-20 20:10:08
○ 2026-06-08 12:30:28
● 2026-06-22 16:34:34
○ 2026-07-07 14:02:24
○ 2026-07-25 21:49:14

○A2a06:98c1:3121::2026-04-05 → 2026-06-22 · 7 obs

○ 2026-02-17 16:16:42
● 2026-04-05 10:11:06
○ 2026-04-20 20:10:08
○ 2026-06-08 12:30:28
● 2026-06-22 16:34:34
○ 2026-07-07 14:02:24
○ 2026-07-25 21:49:14

○A62.149.128.1512016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-07-25 21:49:14

○A62.149.128.1542016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-07-25 21:49:14

○A62.149.128.1572016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-07-25 21:49:14

○A62.149.128.1602016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-07-25 21:49:14

○A62.149.128.1632016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-07-25 21:49:14

○A62.149.128.1662016-12-10 → 2016-12-10 · 3 obs

● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-07-25 21:49:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
systems	v0n0.nic.systems, v0n1.nic.systems, v0n2.nic.systems, v0n3.nic.systems...	12 records
checking.systems	hans.ns.cloudflare.com, kara.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.123

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for checking.systems (unsigned zone)

⏱️ Timing

Total: 3339ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.171.101, 104.21.29.46`
AAAA	2	`2606:4700:3033::6815:1d2e, 2606:4700:3032::ac43:ab65`
NS	2	`hans.ns.cloudflare.com, kara.ns.cloudflare.com`
MX	3	`route2.mx.cloudflare.net (pri: 32), route3.mx.cloudflare.net (pri: 57)...`
TXT	2	`Riad Wahby (rsw@jfet.org) - checking.sys, v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`hans.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v0n0.nic.systems, v0n0.nic.systems, v0n1.nic.systems...)

Analysis

Hierarchy

checking.systems is the parent zone for mx.checking.systems.

IP Addresses

checking.systems resolves to four IP addresses: 104.21.29.46, 172.67.171.101, 2606:4700:3032::ac43:ab65 and 2606:4700:3033::6815:1d2e.

Additional host names — fumoba.icu, premiership-thirst.cfd, victorsitalian.com and two others — share IP numbers with checking.systems.

Name Servers

Two name servers handle the delegation for checking.systems: hans.ns.cloudflare.com and kara.ns.cloudflare.com.

checking.systems shares its name server setup with other domains, including advancedlogicsystems.com, coylandscape.com, mymadmusings.net and two others.

checking.systems partially shares its NS delegation with several other domains, including 97323.com, rsnnc.com, fbeek.de and two others.

These name servers often co-occur with the name servers brenda.ns.cloudflare.com.

Host names with 6 IP numbers:

hans.ns.cloudflare.com resolves to 108.162.193.175, 172.64.33.175 and 173.245.59.175 among others, with 3 other IP addresses in total.

kara.ns.cloudflare.com resolves to 108.162.192.123, 172.64.32.123 and 173.245.58.123 among others, with 3 other IP addresses in total.

Mail Servers

checking.systems uses three mail servers — route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

checking.systems shares mail servers — at least in part — with other domains, including lokdecore.com.br, toolsnp.com, boot.ventures and two others.

Host names with 6 IP numbers:

route1.mx.cloudflare.net resolves to 162.159.205.11, 162.159.205.12 and 162.159.205.13 among others, with 3 other IP addresses in total.

route2.mx.cloudflare.net resolves to 162.159.205.17, 162.159.205.18 and 162.159.205.19 among others, with 3 other IP addresses in total.

route3.mx.cloudflare.net resolves to 162.159.205.23, 162.159.205.24 and 162.159.205.25 among others, with 3 other IP addresses in total.