callculus.com - robtex.com
callculus.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 70.32.23.118🇺🇸 A2HOSTING70.32.16.0/20 A2 Hosting, Inc. | ||||||
| PTR | mi3-ts102.a2hosting.com | ||||||
| NS | ns1.a2hosting.com ⭐ | ||||||
| A | 13.248.158.180🇺🇸 Amazon13.248.144.0/20 | ||||||
| PTR | a79764cc55c0ac9c0.awsglobalaccelerator.com | ||||||
| NS | ns2.a2hosting.com | ||||||
| A | 75.2.118.134🇺🇸 Amazon75.2.112.0/20 | ||||||
| PTR | abc65dd9a44b5332f.awsglobalaccelerator.com | ||||||
| NS | ns3.a2hosting.com | ||||||
| A | 76.223.26.245🇺🇸 Amazon76.223.16.0/20 | ||||||
| PTR | a79764cc55c0ac9c0.awsglobalaccelerator.com | ||||||
| NS | ns4.a2hosting.com | ||||||
| A | 99.83.147.209🇺🇸 Amazon99.83.144.0/20 | ||||||
| PTR | abc65dd9a44b5332f.awsglobalaccelerator.com | ||||||
| MX | mail.callculus.com ⭐ | ||||||
| A | 70.32.23.118🇺🇸 A2HOSTING70.32.16.0/20 A2 Hosting, Inc. | ||||||
| PTR | mi3-ts102.a2hosting.com | ||||||
| TXT | v=spf1 +a +mx +ip4:70.32.23.118 include:spf.a2hosting.com ~all | ||||||
| SOA | ns1.a2hosting.comroot@mi3-ts102.a2hosting.com 2026-02-21 #1 | ||||||
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=1771291435 | ||||||
Subdomains
mail.callculus.com |
Same first word
callculus.com |
DNS History
10 records (6 active, 4 former)
○NSns0.transip.net2015-05-20 → 2016-07-14 · 4 obs
● 2016-07-14 16:18:24
○ 2017-05-29 21:53:18
○ 2026-03-18 20:18:38
●NSns1.a2hosting.com2026-03-14 → 2026-03-18 · 3 obs
● 2026-03-14 23:31:14
● 2026-03-18 20:18:38
○NSns1.transip.nl2015-05-20 → 2016-07-14 · 4 obs
● 2016-07-14 16:18:24
○ 2017-05-29 21:53:18
○ 2026-03-18 20:18:38
●NSns2.a2hosting.com2026-03-14 → 2026-03-18 · 3 obs
● 2026-03-14 23:31:14
● 2026-03-18 20:18:38
○NSns2.transip.eu2015-05-20 → 2016-07-14 · 4 obs
● 2016-07-14 16:18:24
○ 2017-05-29 21:53:18
○ 2026-03-18 20:18:38
●NSns3.a2hosting.com2026-03-14 → 2026-03-18 · 3 obs
● 2026-03-14 23:31:14
● 2026-03-18 20:18:38
●NSns4.a2hosting.com2026-03-14 → 2026-03-18 · 3 obs
● 2026-03-14 23:31:14
● 2026-03-18 20:18:38
●MXmail.callculus.com2026-03-14 → 2026-03-18 · 2 obs
● 2026-03-18 20:18:38
○A178.79.150.1202015-05-20 → 2016-07-14 · 4 obs
● 2016-07-14 16:18:24
○ 2017-05-29 21:53:18
○ 2026-03-18 20:18:38
●A70.32.23.1182026-03-14 → 2026-03-18 · 3 obs
● 2026-03-14 23:31:14
● 2026-03-18 20:18:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| callculus.com | ns1.a2hosting.com, ns2.a2hosting.com, ns3.a2hosting.com, ns4.a2hosting.com | 4 records |
✅ Authoritative Response
Server: 13.248.158.180
NS records: ns1.a2hosting.com, ns2.a2hosting.com, ns3.a2hosting.com, ns4.a2hosting.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for callculus.com (unsigned zone)
⏱️ Timing
Total: 477ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 70.32.23.118 |
| NS | 4 | ns3.a2hosting.com, ns4.a2hosting.com... |
| MX | 1 | mail.callculus.com (pri: 0) |
| TXT | 1 | v=spf1 +a +mx +ip4:70.32.23.118 include: |
| SOA | 1 | ns1.a2hosting.com root.mi3-ts102.a2hosti |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns1.a2hosting.com, ns2.a2hosting.com, ns3.a2hosting.com...)
Analysis
Hierarchy
callculus.com is the parent of mail.callculus.com.
IP Addresses
callculus.com resolves to a single IP address: 70.32.23.118.
Other host names including villaspuertoviejo.com, lifewithoutchallenges.com, mail.samsservicescl.com, computercare.com and doallplastic.com share IP numbers with callculus.com.
Name Servers
callculus.com is delegated to four name servers: ns1.a2hosting.com, ns2.a2hosting.com, ns3.a2hosting.com and ns4.a2hosting.com.
callculus.com at least partially shares name servers with other domains, including 521northrobinwood.com, sundaebuffet.com, joinseeds.earth, politi.com.br and a2zcontrolsystem.com.
Hostnames with a single IP:
ns1.a2hosting.com points to 13.248.158.180
ns2.a2hosting.com points to 75.2.118.134
ns3.a2hosting.com points to 76.223.26.245
ns4.a2hosting.com points to 99.83.147.209
Mail Servers
callculus.com is handled by a single mail server, mail.callculus.com.
mail.callculus.com points to a single IP: 70.32.23.118.