calculuslessons.com - robtex.com
calculuslessons.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 51.195.17.68🇫🇷 OVH51.195.0.0/16 | ||||||
| PTR | ns7.expirationwarning.net | ||||||
| NS | ns3.expirationwarning.net ⭐ | ||||||
| A | 51.161.21.1🇨🇦 OVH51.161.0.0/17 Hosting route | ||||||
| PTR | ns3.expirationwarning.net | ||||||
| NS | ns7.expirationwarning.net | ||||||
| A | 51.195.17.68🇫🇷 OVH51.195.0.0/16 | ||||||
| PTR | ns7.expirationwarning.net | ||||||
| SOA | ns3.expirationwarning.nethostmaster@expirationwarning.net 2026-04-27 #0 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1778474561 | ||||||
Same first word
calculuslessons.com |
calculuslessons.lol |
DNS History
13 records (3 active, 10 former)
○NSns1.fabulous.com2015-06-12 → 2016-02-01 · 4 obs
● 2016-02-01 20:09:44
○ 2016-04-24 14:15:48
○ 2026-05-11 05:11:06
○NSns2.fabulous.com2015-06-12 → 2016-02-01 · 4 obs
● 2016-02-01 20:09:44
○ 2016-04-24 14:15:48
○ 2026-05-11 05:11:06
●NSns3.expirationwarning.net2026-05-11 → 2026-05-11 · 3 obs
● 2026-05-11 05:11:04
● 2026-05-11 05:11:06
●NSns7.expirationwarning.net2026-05-11 → 2026-05-11 · 3 obs
● 2026-05-11 05:11:04
● 2026-05-11 05:11:06
○MXmail.b-io.co2015-06-12 → 2016-02-01 · 4 obs
● 2016-02-01 20:09:44
○ 2016-04-24 14:15:48
○ 2026-05-11 05:11:06
○A173.192.64.1472017-02-15 → 2017-02-15 · 4 obs
● 2017-02-15 06:16:04
○ 2026-05-11 05:11:04
○ 2026-05-11 05:11:06
○A208.48.81.1332015-06-12 → 2016-02-01 · 4 obs
● 2016-02-01 20:09:44
○ 2016-04-24 14:15:48
○ 2026-05-11 05:11:06
○A208.48.81.1342015-06-12 → 2016-02-01 · 4 obs
● 2016-02-01 20:09:44
○ 2016-04-24 14:15:48
○ 2026-05-11 05:11:06
○A208.48.81.1792016-02-01 → 2016-02-01 · 4 obs
● 2016-02-01 20:09:44
○ 2016-04-24 14:15:48
○ 2026-05-11 05:11:06
●A51.195.17.682026-05-11 → 2026-05-11 · 3 obs
● 2026-05-11 05:11:04
● 2026-05-11 05:11:06
○A54.214.116.2192026-05-11 → 2026-05-11 · 2 obs
○ 2026-05-11 05:11:06
○A64.15.205.1002015-06-12 → 2016-02-01 · 4 obs
● 2016-02-01 20:09:44
○ 2016-04-24 14:15:48
○ 2026-05-11 05:11:06
○A64.15.205.1012015-06-12 → 2016-02-01 · 4 obs
● 2016-02-01 20:09:44
○ 2016-04-24 14:15:48
○ 2026-05-11 05:11:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | m.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net, g.gtld-servers.net... | - |
| calculuslessons.com | ns3.expirationwarning.net, ns7.expirationwarning.net | - |
✅ Authoritative Response
Server:51.195.17.68
NS records: ns3.expirationwarning.net, ns7.expirationwarning.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for calculuslessons.com (unsigned zone)
⏱️ Timing
Total: 601ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 51.195.17.68 |
| NS | 2 | ns7.expirationwarning.net, ns3.expirationwarning.net |
| SOA | 1 | ns3.expirationwarning.net hostmaster.exp |
Analysis
IP Addresses
calculuslessons.com points to a single IP address: 51.195.17.68.
Other host names such as domloto.com, estilograficasclavijo.com, sdlcdlgg.com, roomcafe.com and ns1.gay-youtube.com share IP numbers with calculuslessons.com.
Name Servers
calculuslessons.com is delegated to two name servers: ns3.expirationwarning.net and ns7.expirationwarning.net.
calculuslessons.com uses the same name server setup as other domains, including (0x736578)webgirls.com, ivl.us, c.vk-intim.com, aginginreverse.com and www.fatmui.com.
At least part of the name servers for calculuslessons.com are shared with other domains, for instance www.ressources-ecole.net, cd4b3840c307.toavto.net, ressources-ecole.net, mail.visual-linguistics.net and 1300printers.net.au.
These name servers are commonly used alongside ns1.expirationwarning.net and ns5.expirationwarning.net.
Hostnames with a single IP
ns3.expirationwarning.net resolves to: 51.161.21.1.
ns7.expirationwarning.net resolves to: 51.195.17.68.