mathlessons.co - dns.ninja
mathlessons.co
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3032::6815:4ab0🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3032::ac43:cca8🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.74.176Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.204.168🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | hugh.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3b75🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hugh.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c175🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | hugh.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2175🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | hugh.ns.cloudflare.com | ||||||
| A | 108.162.193.117🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hugh.ns.cloudflare.com | ||||||
| A | 172.64.33.117🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hugh.ns.cloudflare.com | ||||||
| A | 173.245.59.117🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hugh.ns.cloudflare.com | ||||||
| NS | jule.ns.cloudflare.com | ||||||
| A | 2606:4700:50::adf5:3aaf🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jule.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c0af🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | jule.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:20af🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | jule.ns.cloudflare.com | ||||||
| A | 108.162.192.175🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jule.ns.cloudflare.com | ||||||
| A | 172.64.32.175🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jule.ns.cloudflare.com | ||||||
| A | 173.245.58.175🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jule.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.74.176, 172.67.204.168 | ||||||
| IPv6 hints | 2606:4700:3032::6815:4ab0, 2606:4700:3032::ac43:cca8 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=48, name=cloudflare-ech.com | ||||||
| SOA | hugh.ns.cloudflare.comdns@cloudflare.com serial=2411797526 | ||||||
co
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns0.centralnic.net ⭐ | ||||||
| NS | a.registrydns.co | ||||||
| NS | b.registrydns.co | ||||||
| NS | c.registrydns.co | ||||||
| NS | d.registrydns.co | ||||||
| SOA | ns0.centralnic.nethostmaster@centralnic.net serial=1759729159 | ||||||
Subdomains
Same first word
Similar names
DNS History
7 records (6 active, 1 former)
●NShugh.ns.cloudflare.com2026-05-15 → 2026-08-09 · 2 obs
● 2026-08-09 23:41:12
●NSjule.ns.cloudflare.com2026-05-15 → 2026-08-09 · 2 obs
● 2026-08-09 23:41:12
●A104.21.74.1762026-05-15 → 2026-08-09 · 4 obs
● 2026-05-25 17:54:14
○ 2026-06-07 06:06:32
● 2026-08-09 23:41:12
●A172.67.204.1682026-05-15 → 2026-08-09 · 4 obs
● 2026-05-25 17:54:14
○ 2026-06-07 06:06:32
● 2026-08-09 23:41:12
●A2606:4700:3032::6815:4ab02026-08-09 → 2026-08-09 · 2 obs
● 2026-08-09 23:41:12
●A2606:4700:3032::ac43:cca82026-05-15 → 2026-08-09 · 4 obs
● 2026-05-25 17:54:14
○ 2026-06-07 06:06:32
● 2026-08-09 23:41:12
○A2606:4700:3034::6815:4ab02026-05-15 → 2026-05-25 · 4 obs
● 2026-05-25 17:54:14
○ 2026-06-07 06:06:32
○ 2026-08-09 23:41:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| co | a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co | - |
| mathlessons.co | hugh.ns.cloudflare.com, jule.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.33.117
NS records: hugh.ns.cloudflare.com, jule.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mathlessons.co (unsigned zone)
⏱️ Timing
Total: 481ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.74.176, 172.67.204.168 |
| AAAA | 2 | 2606:4700:3032::6815:4ab0, 2606:4700:3032::ac43:cca8 |
| NS | 2 | hugh.ns.cloudflare.com, jule.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | hugh.ns.cloudflare.com dns.cloudflare.co |
Analysis
Hierarchy
mathlessons.co is the parent domain of practice.mathlessons.co and ten.mathlessons.co.
IP Addresses
mathlessons.co has four IP addresses: 104.21.74.176, 172.67.204.168, 2606:4700:3032::6815:4ab0 and 2606:4700:3032::ac43:cca8.
Additional host names — mail.directmailservices.com.au, luminova.click, credit-infos.fr and two others — share IP numbers with mathlessons.co.
Name Servers
mathlessons.co has two authoritative name servers — hugh.ns.cloudflare.com and jule.ns.cloudflare.com.
mathlessons.co shares its name server setup with other domains, including geometrography.com, 1xbet-ude.com, galatrix.com and two others.
mathlessons.co has at least partial name server overlap with other domains, such as bankmbc.com, liberatio.org, instantcryptotrade.com and two others.
It is common to find these name servers paired with the name servers viddy.ns.cloudflare.com.
Host names with 6 IP numbers:
hugh.ns.cloudflare.com points to 108.162.193.117, 172.64.33.117, 173.245.59.117 and 3 other IP addresses.
jule.ns.cloudflare.com points to 108.162.192.175, 172.64.32.175, 173.245.58.175 and 3 other IP addresses.