mathzen.org - robtex.com
mathzen.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3033::ac43:a4ee🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::6815:41a5🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.65.165Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.164.238🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | martha.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:268e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | martha.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c28e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | martha.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:228e🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | martha.ns.cloudflare.com | ||||||
| A | 108.162.194.142🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | martha.ns.cloudflare.com | ||||||
| A | 162.159.38.142Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | martha.ns.cloudflare.com | ||||||
| A | 172.64.34.142🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | martha.ns.cloudflare.com | ||||||
| NS | mitchell.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2ce7🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | mitchell.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c3e7🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | mitchell.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:23e7🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | mitchell.ns.cloudflare.com | ||||||
| A | 108.162.195.231🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | mitchell.ns.cloudflare.com | ||||||
| A | 162.159.44.231Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | mitchell.ns.cloudflare.com | ||||||
| A | 172.64.35.231🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | mitchell.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.65.165, 172.67.164.238 | ||||||
| IPv6 hints | 2606:4700:3033::ac43:a4ee, 2606:4700:3036::6815:41a5 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=105, name=cloudflare-ech.com | ||||||
| SOA | martha.ns.cloudflare.comdns@cloudflare.com serial=2398806196 | ||||||
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.infohostmaster@donuts.email serial=1777116494 | ||||||
Same first word
Similar names
DNS History
8 records (6 active, 2 former)
●NSmartha.ns.cloudflare.com2026-03-15 → 2026-04-25 · 2 obs
● 2026-04-25 12:02:24
●NSmitchell.ns.cloudflare.com2026-03-15 → 2026-04-25 · 2 obs
● 2026-04-25 12:02:24
●A104.21.65.1652026-03-15 → 2026-04-25 · 4 obs
○ 2026-03-21 09:09:52
● 2026-03-30 01:55:02
● 2026-04-25 12:02:24
○A172.64.80.12026-03-21 → 2026-03-21 · 4 obs
● 2026-03-21 09:09:52
○ 2026-03-30 01:55:02
○ 2026-04-25 12:02:24
●A172.67.164.2382026-03-15 → 2026-04-25 · 4 obs
○ 2026-03-21 09:09:52
● 2026-03-30 01:55:02
● 2026-04-25 12:02:24
○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-21 → 2026-03-21 · 4 obs
● 2026-03-21 09:09:52
○ 2026-03-30 01:55:02
○ 2026-04-25 12:02:24
●A2606:4700:3033::ac43:a4ee2026-03-15 → 2026-04-25 · 4 obs
○ 2026-03-21 09:09:52
● 2026-03-30 01:55:02
● 2026-04-25 12:02:24
●A2606:4700:3036::6815:41a52026-03-15 → 2026-04-25 · 4 obs
○ 2026-03-21 09:09:52
● 2026-03-30 01:55:02
● 2026-04-25 12:02:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | d0.org.afilias-nst.org, b0.org.afilias-nst.org, b2.org.afilias-nst.org | - |
| mathzen.org | mitchell.ns.cloudflare.com, martha.ns.cloudflare.com | - |
✅ Authoritative Response
Server:162.159.38.142
NS records: mitchell.ns.cloudflare.com, martha.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mathzen.org (unsigned zone)
⏱️ Timing
Total: 392ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.65.165, 172.67.164.238 |
| AAAA | 2 | 2606:4700:3033::ac43:a4ee, 2606:4700:3036::6815:41a5 |
| NS | 2 | martha.ns.cloudflare.com, mitchell.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | martha.ns.cloudflare.com dns.cloudflare. |
Analysis
IP Addresses
mathzen.org points to four IP numbers: 2606:4700:3033::ac43:a4ee, 2606:4700:3036::6815:41a5, 104.21.65.165 and 172.67.164.238.
Other host names, for instance laoutaris.com, packetmangling.co.uk, hitprace.cz, jlabs.pl and jsjiagu.com share IP numbers with mathzen.org.
Name Servers
Delegation for mathzen.org rests with two name servers, martha.ns.cloudflare.com and mitchell.ns.cloudflare.com.
mathzen.org shares the same name server setup as other domains, including discrevolt.net, 4448268-coinbase.com, 5536c.com, usmediaservice.com and 8947156-coinbase.com.
mathzen.org at least partially shares name servers with other domains, for instance vitatech.biz, teeslocal.com, back2car.fr, td7.cn and stcloudairductcleaning.com.
these name servers are commonly used with nelly.ns.cloudflare.com, kate.ns.cloudflare.com and duke.ns.cloudflare.com.
Host names with six IP numbers: martha.ns.cloudflare.com points to: 2606:4700:50::a29f:268e, 2803:f800:50::6ca2:c28e, 2a06:98c1:50::ac40:228e, 108.162.194.142, 162.159.38.142 and 172.64.34.142. mitchell.ns.cloudflare.com points to: 2606:4700:58::a29f:2ce7, 2803:f800:50::6ca2:c3e7, 2a06:98c1:50::ac40:23e7, 108.162.195.231, 162.159.44.231 and 172.64.35.231.