smtpcalculator.com - robtex.com
smtpcalculator.com
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=1775933457 | ||||||
Same first word
smtpcalculator.com |
DNS History
12 records (5 active, 7 former)
●NSns1.markmonitor.com2026-02-16 → 2026-04-11 · 3 obs
● 2026-02-16 07:42:46
● 2026-04-11 19:20:08
●NSns2.markmonitor.com2026-02-16 → 2026-04-11 · 3 obs
● 2026-02-16 07:42:46
● 2026-04-11 19:20:08
●NSns3.markmonitor.com2026-02-16 → 2026-04-11 · 3 obs
● 2026-02-16 07:42:46
● 2026-04-11 19:20:08
●NSns4.markmonitor.com2026-02-16 → 2026-04-11 · 3 obs
● 2026-02-16 07:42:46
● 2026-04-11 19:20:08
○NSpdns03.domaincontrol.com2015-06-22 → 2017-04-02 · 4 obs
● 2017-04-02 18:46:08
○ 2026-02-16 07:42:46
○ 2026-04-11 19:20:08
○NSpdns04.domaincontrol.com2015-06-22 → 2017-04-02 · 4 obs
● 2017-04-02 18:46:08
○ 2026-02-16 07:42:46
○ 2026-04-11 19:20:08
○MXmailstore1.secureserver.net2015-06-22 → 2026-02-17 · 4 obs
● 2026-02-17 00:51:02
○ 2026-02-17 19:50:26
○ 2026-04-11 19:20:08
○MXsmtp.secureserver.net2015-06-22 → 2026-02-17 · 4 obs
● 2026-02-17 00:51:02
○ 2026-02-17 19:50:26
○ 2026-04-11 19:20:08
●A15.197.70.982026-03-14 → 2026-04-11 · 3 obs
● 2026-03-14 01:50:08
● 2026-04-11 19:20:08
○A184.168.221.512015-06-22 → 2017-04-02 · 4 obs
● 2017-04-02 18:46:08
○ 2026-02-16 07:42:46
○ 2026-04-11 19:20:08
○A3.33.139.322026-03-13 → 2026-03-13 · 4 obs
● 2026-03-13 09:37:36
○ 2026-03-14 01:50:08
○ 2026-04-11 19:20:08
○A99.83.176.462026-02-16 → 2026-03-12 · 5 obs
● 2026-02-16 07:42:46
● 2026-03-12 14:46:06
○ 2026-03-13 09:37:36
○ 2026-04-11 19:20:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| smtpcalculator.com | ns1.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns2.markmonitor.com | 8 records |
✅ Authoritative Response
Server:149.112.160.1
NS records: ns1.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns2.markmonitor.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for smtpcalculator.com (unsigned zone)
⏱️ Timing
Total: 336ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 15.197.70.98 |
| NS | 4 | ns3.markmonitor.com, ns2.markmonitor.com... |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns1.markmonitor.com hostmaster.markmonit |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (ns1.markmonitor.com, ns1.markmonitor.com, ns3.markmonitor.com...)
Analysis
IP Addresses
smtpcalculator.com points to a single IP: 15.197.70.98.
Other host names, for instance instantly2fa.com, bny-newton.com, colehaan.yn.cn, twiml.net and colehaan.com.ht share IP numbers with smtpcalculator.com.
Name Servers
smtpcalculator.com's delegation is handled by four name servers: ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com and ns4.markmonitor.com.
smtpcalculator.com partially shares name servers with other domains; examples include conradspas.com.es, fanaticinc.com, britishsugartechnologycampus.com, ficoasport.com and phcompany.com.
These name servers are commonly used with ns5.markmonitor.com, ns6.markmonitor.com and ns7.markmonitor.com.
Host names with two IPs:
ns1.markmonitor.com points to 2620:10a:80a8::1 and 149.112.160.1
ns2.markmonitor.com points to 2001:67c:10b8::1 and 176.97.158.1
ns3.markmonitor.com points to 2620:10a:80a9::1 and 149.112.161.1
ns4.markmonitor.com points to 2001:67c:1bc::1 and 192.174.68.1