calculus.info - robtex.com
calculus.info
| DNSSEC | ⚠️ Not signed | ||||||
| A | 69.13.193.154🇺🇸 CORESPACE-DAL69.13.0.0/16 Corespace assigned IP space | ||||||
| PTR | sosmath.com | ||||||
| NS | ns2.propagation.net ⭐ | ||||||
| A | 69.13.54.135🇺🇸 CORESPACE-DAL69.13.0.0/16 Corespace assigned IP space | ||||||
| NS | ns.propagation.net | ||||||
| A | 69.13.54.134🇺🇸 CORESPACE-DAL69.13.0.0/16 Corespace assigned IP space | ||||||
| MX | mail.calculus.info ⭐ | ||||||
| A | 69.13.193.154🇺🇸 CORESPACE-DAL69.13.0.0/16 Corespace assigned IP space | ||||||
| PTR | sosmath.com | ||||||
| SOA | ns.propagation.nethostmaster@propagation.net 2011-07-22 #22 | ||||||
info
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.info.afilias-nst.info ⭐ | ||||||
| NS | a2.info.afilias-nst.info | ||||||
| NS | b0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | b2.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | c0.info.afilias-nst.info | ||||||
| NS | d0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| SOA | a0.info.afilias-nst.infohostmaster@donuts.email serial=1786827047 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSns.propagation.net2015-08-15 → 2026-08-15 · 2 obs
● 2026-08-15 21:32:32
●NSns2.propagation.net2015-08-15 → 2026-08-15 · 2 obs
● 2026-08-15 21:32:32
●MXmail.calculus.info2015-08-15 → 2026-08-15 · 2 obs
● 2026-08-15 21:32:32
●A69.13.193.1542015-08-15 → 2026-08-15 · 2 obs
● 2026-08-15 21:32:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| info | a0.info.afilias-nst.info, c0.info.afilias-nst.info, a2.info.afilias-nst.info | - |
| calculus.info | ns.propagation.net, ns2.propagation.net | - |
✅ Authoritative Response
Server:69.13.54.134
NS records: ns.propagation.net, ns2.propagation.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for calculus.info (unsigned zone)
⏱️ Timing
Total: 365ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 69.13.193.154 |
| NS | 2 | ns2.propagation.net, ns.propagation.net |
| MX | 1 | mail.calculus.info (pri: 10) |
| SOA | 1 | ns.propagation.net hostmaster.propagatio |
Analysis
IP Addresses
calculus.info resolves to just one IP address, 69.13.193.154.
Host names like math-medics.com are further examples that share IP numbers with calculus.info.
Name Servers
Two name servers handle the delegation for calculus.info: ns2.propagation.net and ns.propagation.net.
calculus.info shares its NS records with other domains, for example contrails.lu, iusmail.com, devserver.propagation.net and two others.
calculus.info shares at least some of its name servers with other domains, including nibmail.propagation.net, davek.propagation.net, galadriel.propagation.net and two others.
These name servers are frequently seen alongside ns3.propagation.net, ns4.propagation.net, ns1.lax.propagation.net and 5 other name servers.
ns2.propagation.net and ns.propagation.net each resolve to one IP number: ns2.propagation.net points to 69.13.54.135 and ns.propagation.net points to 69.13.54.134.
Mail Servers
The sole mail server for calculus.info is mail.calculus.info.
mail.calculus.info carries a single IP number, which is 69.13.193.154.