checking.systems - robtex.com
checking.systems
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3036::ac43:ab65🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::6815:1d2e🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.29.46Cloudflare104.21.16.0/20 , 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 | 162.159.205.17Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| A | 162.159.205.18Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route2.mx.cloudflare.net | ||||||
| A | 162.159.205.19Cloudflare162.159.205.0/24 , 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 | 162.159.205.23Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| A | 162.159.205.24Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route3.mx.cloudflare.net | ||||||
| A | 162.159.205.25Cloudflare162.159.205.0/24 , 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 | 162.159.205.11Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| A | 162.159.205.12Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | route1.mx.cloudflare.net | ||||||
| A | 162.159.205.13Cloudflare162.159.205.0/24 , 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 | 2606:4700:3036::ac43:ab65, 2606:4700:3037::6815:1d2e | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=14, name=cloudflare-ech.com | ||||||
| SOA | hans.ns.cloudflare.comdns@cloudflare.com serial=2402573212 | ||||||
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.systemshostmaster@donuts.email serial=1778333751 | ||||||
Same first word
Similar names
DNS History
24 records (9 active, 15 former)
○NSdns.technorail.com2016-12-10 → 2016-12-10 · 3 obs
● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○NSdns2.technorail.com2016-12-10 → 2016-12-10 · 3 obs
● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○NSdns3.arubadns.net2016-12-10 → 2016-12-10 · 3 obs
● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○NSdns4.arubadns.cz2016-12-10 → 2016-12-10 · 3 obs
● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
●NShans.ns.cloudflare.com2026-02-17 → 2026-05-09 · 3 obs
○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
● 2026-05-09 13:50:30
● 2026-02-17 16:16:42
● 2026-05-09 13:50:30
●NSkara.ns.cloudflare.com2026-02-17 → 2026-05-09 · 3 obs
○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
● 2026-05-09 13:50:30
● 2026-02-17 16:16:42
● 2026-05-09 13:50:30
○MXmx.checking.systems2016-12-10 → 2016-12-10 · 3 obs
● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
●MXroute1.mx.cloudflare.net2026-02-17 → 2026-05-09 · 3 obs
○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
● 2026-05-09 13:50:30
● 2026-02-17 16:16:42
● 2026-05-09 13:50:30
●MXroute2.mx.cloudflare.net2026-02-17 → 2026-05-09 · 3 obs
○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
● 2026-05-09 13:50:30
● 2026-02-17 16:16:42
● 2026-05-09 13:50:30
●MXroute3.mx.cloudflare.net2026-02-17 → 2026-05-09 · 3 obs
○ 2018-01-16 01:49:14
● 2026-02-17 16:16:42
● 2026-05-09 13:50:30
● 2026-02-17 16:16:42
● 2026-05-09 13:50:30
●A104.21.29.462026-02-17 → 2026-05-09 · 5 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
● 2026-05-09 13:50:30
● 2026-02-17 16:16:42
○ 2026-04-05 10:11:06
● 2026-04-20 20:10:08
● 2026-05-09 13:50:30
●A172.67.171.1012026-02-17 → 2026-05-09 · 5 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
● 2026-05-09 13:50:30
● 2026-02-17 16:16:42
○ 2026-04-05 10:11:06
● 2026-04-20 20:10:08
● 2026-05-09 13:50:30
○A188.114.96.02026-04-05 → 2026-04-05 · 4 obs
○ 2026-02-17 16:16:42
● 2026-04-05 10:11:06
○ 2026-04-20 20:10:08
○ 2026-05-09 13:50:30
● 2026-04-05 10:11:06
○ 2026-04-20 20:10:08
○ 2026-05-09 13:50:30
○A188.114.97.02026-04-05 → 2026-04-05 · 4 obs
○ 2026-02-17 16:16:42
● 2026-04-05 10:11:06
○ 2026-04-20 20:10:08
○ 2026-05-09 13:50:30
● 2026-04-05 10:11:06
○ 2026-04-20 20:10:08
○ 2026-05-09 13:50:30
●A2606:4700:3036::ac43:ab652026-02-17 → 2026-05-09 · 5 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
● 2026-05-09 13:50:30
● 2026-02-17 16:16:42
○ 2026-04-05 10:11:06
● 2026-04-20 20:10:08
● 2026-05-09 13:50:30
●A2606:4700:3037::6815:1d2e2026-02-17 → 2026-05-09 · 5 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
● 2026-05-09 13:50:30
● 2026-02-17 16:16:42
○ 2026-04-05 10:11:06
● 2026-04-20 20:10:08
● 2026-05-09 13:50:30
○A2a06:98c1:3120::2026-04-05 → 2026-04-05 · 4 obs
○ 2026-02-17 16:16:42
● 2026-04-05 10:11:06
○ 2026-04-20 20:10:08
○ 2026-05-09 13:50:30
● 2026-04-05 10:11:06
○ 2026-04-20 20:10:08
○ 2026-05-09 13:50:30
○A2a06:98c1:3121::2026-04-05 → 2026-04-05 · 4 obs
○ 2026-02-17 16:16:42
● 2026-04-05 10:11:06
○ 2026-04-20 20:10:08
○ 2026-05-09 13:50:30
● 2026-04-05 10:11:06
○ 2026-04-20 20:10:08
○ 2026-05-09 13:50:30
○A62.149.128.1512016-12-10 → 2016-12-10 · 3 obs
● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○A62.149.128.1542016-12-10 → 2016-12-10 · 3 obs
● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○A62.149.128.1572016-12-10 → 2016-12-10 · 3 obs
● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○A62.149.128.1602016-12-10 → 2016-12-10 · 3 obs
● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○A62.149.128.1632016-12-10 → 2016-12-10 · 3 obs
● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○A62.149.128.1662016-12-10 → 2016-12-10 · 3 obs
● 2016-12-10 20:41:48
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
○ 2018-01-16 01:49:14
○ 2026-05-09 13:50:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| systems | v0n0.nic.systems, v0n2.nic.systems, v2n0.nic.systems, v0n1.nic.systems... | 12 records |
| checking.systems | hans.ns.cloudflare.com, kara.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.32.123
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: 761ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.29.46, 172.67.171.101 |
| AAAA | 2 | 2606:4700:3037::6815:1d2e, 2606:4700:3036::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, v0n2.nic.systems...)
Analysis
IP Addresses
Four IP numbers are pointed to by checking.systems: 2606:4700:3036::ac43:ab65, 2606:4700:3037::6815:1d2e, 104.21.29.46 and 172.67.171.101.
other host names including fumoba.icu, premiership-thirst.cfd, victorsitalian.com, jnsh168.com and camguide.com share IP numbers with checking.systems.
Name Servers
checking.systems is delegated to two name servers hans.ns.cloudflare.com and kara.ns.cloudflare.com.
checking.systems shares the same name server setup as other domains, for instance advancedlogicsystems.com, coylandscape.com, mymadmusings.net, crypto.fyi and fort-awesome.org.
checking.systems at least partially shares name servers with other domains, for instance 97323.com, rsnnc.com, fbeek.de, quietstormink.com and byrjjzx.com.
these name servers are commonly used alongside brenda.ns.cloudflare.com.
Host names with six IP numbers:
Host name hans.ns.cloudflare.com points to: 2606:4700:58::adf5:3baf, 2803:f800:50::6ca2:c1af, 2a06:98c1:50::ac40:21af, 108.162.193.175, 172.64.33.175 and 173.245.59.175.
Host name kara.ns.cloudflare.com points to: 2606:4700:50::adf5:3a7b, 2803:f800:50::6ca2:c07b, 2a06:98c1:50::ac40:207b, 108.162.192.123, 172.64.32.123 and 173.245.58.123.
Mail Servers
checking.systems is handled by three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.
checking.systems shares some mail servers with other domains, at least partially, for instance toolsnp.com, boot.ventures, itsdho.org, silvercybersecurity.com and beatecho.com.
Host names with six IP numbers:
Host name route1.mx.cloudflare.net points to: 2606:4700:f5::b, 2606:4700:f5::c, 2606:4700:f5::d, 162.159.205.11, 162.159.205.12 and 162.159.205.13.
Host name route2.mx.cloudflare.net points to: 2606:4700:f5::e, 2606:4700:f5::f, 2606:4700:f5::10, 162.159.205.17, 162.159.205.18 and 162.159.205.19.
Host name route3.mx.cloudflare.net points to: 2606:4700:f5::11, 2606:4700:f5::12, 2606:4700:f5::13, 162.159.205.23, 162.159.205.24 and 162.159.205.25.