mathstud.io - robtex.com
mathstud.io
| DNSSEC | ⚠️ Not signed | ||||||
| A | 104.131.209.245🇺🇸 DIGITALOCEAN104.131.192.0/19 DigitalOcean | ||||||
| NS | ns1.digitalocean.com ⭐ | ||||||
| A | 2606:4700:52::ac40:34d2🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns1.digitalocean.com | ||||||
| A | 172.64.52.210🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns1.digitalocean.com | ||||||
| NS | ns2.digitalocean.com | ||||||
| A | 2606:4700:5a::ac40:3515🇺🇸 Cloudflare2606:4700:5a::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns2.digitalocean.com | ||||||
| A | 172.64.53.21🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns2.digitalocean.com | ||||||
| NS | ns3.digitalocean.com | ||||||
| A | 2606:4700:52::ac40:31d1🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns3.digitalocean.com | ||||||
| A | 172.64.49.209🇺🇸 Cloudflare172.64.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ns3.digitalocean.com | ||||||
| SOA | ns1.digitalocean.comhostmaster@mathstud.io serial=1567019254 | ||||||
io
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.io ⭐ | ||||||
| NS | a2.nic.io | ||||||
| NS | b0.nic.io | ||||||
| NS | c0.nic.io | ||||||
| SOA | a0.nic.iohostmaster@donuts.email serial=1774801548 | ||||||
Same first word
mathstud.io |
Similar names
DNS History
9 records (4 active, 5 former)
●NSns1.digitalocean.com2015-08-08 → 2026-03-29 · 2 obs
● 2026-03-29 16:55:00
●NSns2.digitalocean.com2015-08-08 → 2026-03-29 · 2 obs
● 2026-03-29 16:55:00
●NSns3.digitalocean.com2015-08-08 → 2026-03-29 · 2 obs
● 2026-03-29 16:55:00
○MXalt1.aspmx.l.google.com2015-08-08 → 2015-12-04 · 4 obs
● 2015-12-04 10:31:12
○ 2016-07-02 18:10:16
○ 2026-03-29 16:55:00
○MXalt2.aspmx.l.google.com2015-08-08 → 2015-12-04 · 4 obs
● 2015-12-04 10:31:12
○ 2016-07-02 18:10:16
○ 2026-03-29 16:55:00
○MXaspmx.l.google.com2015-08-08 → 2015-12-04 · 4 obs
● 2015-12-04 10:31:12
○ 2016-07-02 18:10:16
○ 2026-03-29 16:55:00
○MXaspmx2.googlemail.com2015-08-08 → 2015-12-04 · 4 obs
● 2015-12-04 10:31:12
○ 2016-07-02 18:10:16
○ 2026-03-29 16:55:00
○MXaspmx3.googlemail.com2015-08-08 → 2015-12-04 · 4 obs
● 2015-12-04 10:31:12
○ 2016-07-02 18:10:16
○ 2026-03-29 16:55:00
●A104.131.209.2452015-08-08 → 2026-03-29 · 2 obs
● 2026-03-29 16:55:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | a2.nic.io, a0.nic.io, c0.nic.io, b0.nic.io | - |
| mathstud.io | ns3.digitalocean.com, ns1.digitalocean.com, ns2.digitalocean.com | - |
✅ Authoritative Response
Server:172.64.49.209
NS records: ns3.digitalocean.com, ns1.digitalocean.com, ns2.digitalocean.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mathstud.io (unsigned zone)
⏱️ Timing
Total: 231ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 104.131.209.245 |
| NS | 3 | ns2.digitalocean.com, ns3.digitalocean.com... |
| SOA | 1 | ns1.digitalocean.com hostmaster.mathstud |
Analysis
IP Addresses
mathstud.io points to a single IP address: 104.131.209.245.
Name Servers
mathstud.io is delegated to three name servers: ns1.digitalocean.com, ns2.digitalocean.com and ns3.digitalocean.com.
mathstud.io at least partially shares name servers with other domains, for example trucononline.com, kampunggym.com.my, bostonchron.com, sourcedpolitics.com and 1.0.0.1.1.d.3.0.0.0.0.0.0.0.0.0.0.d.0.0.1.0.0.0.0.c.0.b.3.0.a.2.ip6.arpa.
Host names with two IP numbers:
ns1.digitalocean.com points to 2606:4700:52::ac40:34d2 and 172.64.52.210
ns2.digitalocean.com points to 2606:4700:5a::ac40:3515 and 172.64.53.21
ns3.digitalocean.com points to 2606:4700:52::ac40:31d1 and 172.64.49.209