optfirst.biz - robtex.com
optfirst.biz
biz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld.biz ⭐ | ||||||
| NS | b.gtld.biz | ||||||
| NS | c.gtld.biz | ||||||
| NS | m.gtld.biz | ||||||
| NS | n.gtld.biz | ||||||
| NS | w.gtld.biz | ||||||
| NS | x.gtld.biz | ||||||
| NS | y.gtld.biz | ||||||
| SOA | a.gtld.bizadmin@tldns.godaddy serial=1786554630 | ||||||
Same first word
Similar names
DNS History
7 records (6 active, 1 former)
●NSpdns03.domaincontrol.com2015-07-22 → 2026-08-12 · 2 obs
● 2026-08-12 17:22:14
●NSpdns04.domaincontrol.com2015-07-22 → 2026-08-12 · 2 obs
● 2026-08-12 17:22:14
●MXmailstore1.secureserver.net2015-07-22 → 2026-08-12 · 2 obs
● 2026-08-12 17:22:14
●MXsmtp.secureserver.net2015-07-22 → 2026-08-12 · 2 obs
● 2026-08-12 17:22:14
●A15.197.142.1732026-06-13 → 2026-08-12 · 3 obs
● 2026-06-13 11:56:04
● 2026-08-12 17:22:14
○A184.168.221.282015-07-22 → 2018-10-29 · 4 obs
● 2018-10-29 01:14:12
○ 2026-06-13 11:56:04
○ 2026-08-12 17:22:14
●A3.33.152.1472026-06-13 → 2026-08-12 · 3 obs
● 2026-06-13 11:56:04
● 2026-08-12 17:22:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| biz | w.gtld.biz, y.gtld.biz, a.gtld.biz, b.gtld.biz... | - |
| optfirst.biz | pdns03.domaincontrol.com, pdns04.domaincontrol.com | - |
✅ Authoritative Response
Server:97.74.111.51
NS records: pdns03.domaincontrol.com, pdns04.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for optfirst.biz (unsigned zone)
⏱️ Timing
Total: 469ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 15.197.142.173, 3.33.152.147 |
| NS | 2 | pdns03.domaincontrol.com, pdns04.domaincontrol.com |
| MX | 2 | mailstore1.secureserver.net (pri: 10), smtp.secureserver.net (pri: 0) |
| SOA | 1 | pdns03.domaincontrol.com dns.jomax.net |
Analysis
IP Addresses
optfirst.biz directs to two IP numbers, 3.33.152.147 and 15.197.142.173
tech-ip.net, gut-pro.com, applianceservpro.com plus two other host names have IP numbers in common with optfirst.biz.
Name Servers
optfirst.biz is served by two delegated name servers, pdns03.domaincontrol.com and pdns04.domaincontrol.com.
The name server configuration of optfirst.biz is shared with other domains, for instance passsolutions.com, reydel.com, florencelaw.net and two others.
The DNS delegation for optfirst.biz at least partly coincides with that of other domains, lumperlink.net being one example.
Each of the two host names carries two IP addresses: pdns03.domaincontrol.com points to 97.74.111.51 and 2603:5:21f0::33, and pdns04.domaincontrol.com points to 173.201.79.51 and 2603:5:22f0::33.
Mail Servers
optfirst.biz uses two mail servers, mailstore1.secureserver.net and smtp.secureserver.net.
The mail server setup of optfirst.biz matches that of other domains such as motorquiz.com, yourvirgil.com, rusticsoap.com and two others.
optfirst.biz shares at least some of its mail servers with other domains, such as labscan.net.
mailstore1.secureserver.net and smtp.secureserver.net each resolve to three IP addresses. mailstore1.secureserver.net resolves to 216.69.141.78, 216.69.141.114 and 216.69.141.162. smtp.secureserver.net resolves to 216.69.141.71, 216.69.141.84 and 216.69.141.113.