certifiedmail.com - robtex.com
certifiedmail.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=1771291435 | ||||||
PTR for
Subdomains
Same first word
DNS History
9 records (6 active, 3 former)
●NSns1-01.azure-dns.com2026-02-27 → 2026-03-23 · 3 obs
● 2026-02-27 22:13:30
● 2026-03-23 16:45:00
○NSns1.nac.net2015-08-05 → 2017-09-25 · 4 obs
● 2017-09-25 10:13:02
○ 2026-02-27 22:13:30
○ 2026-03-23 16:45:00
●NSns2-01.azure-dns.net2026-02-27 → 2026-03-23 · 3 obs
● 2026-02-27 22:13:30
● 2026-03-23 16:45:00
○NSns2.nac.net2015-08-05 → 2017-09-25 · 4 obs
● 2017-09-25 10:13:02
○ 2026-02-27 22:13:30
○ 2026-03-23 16:45:00
●NSns3-01.azure-dns.org2026-02-27 → 2026-03-23 · 3 obs
● 2026-02-27 22:13:30
● 2026-03-23 16:45:00
●NSns4-01.azure-dns.info2026-02-27 → 2026-03-23 · 3 obs
● 2026-02-27 22:13:30
● 2026-03-23 16:45:00
●MXmail.certifiedmail.com2015-08-05 → 2026-03-23 · 2 obs
● 2026-03-23 16:45:00
○A207.99.48.832015-08-05 → 2017-09-25 · 4 obs
● 2017-09-25 10:13:02
○ 2026-02-27 22:13:30
○ 2026-03-23 16:45:00
●A54.208.18.1582026-02-27 → 2026-03-23 · 3 obs
● 2026-02-27 22:13:30
● 2026-03-23 16:45:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| certifiedmail.com | ns1-01.azure-dns.com, ns2-01.azure-dns.net, ns3-01.azure-dns.org, ns4-01.azure-dns.info | 2 records |
✅ Authoritative Response
Server:150.171.21.1
NS records: ns1-01.azure-dns.com, ns2-01.azure-dns.net, ns3-01.azure-dns.org, ns4-01.azure-dns.info
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for certifiedmail.com (unsigned zone)
⏱️ Timing
Total: 2265ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 54.208.18.158 |
| NS | 4 | ns1-01.azure-dns.com, ns2-01.azure-dns.net... |
| MX | 1 | mail.certifiedmail.com (pri: 100) |
| TXT | 2 | MS=ms22364425, v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | ns1-01.azure-dns.com azuredns-hostmaster |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1-01.azure-dns.com, ns1-01.azure-dns.com)
Analysis
Hierarchy
certifiedmail.com is a parent of mail.certifiedmail.com, www.certifiedmail.com, ssl.certifiedmail.com and send.certifiedmail.com.
IP Addresses
certifiedmail.com resolves to one IP number: 54.208.18.158.
Other host names for instance www.certifiedmail.com and ec2-54-208-18-158.compute-1.amazonaws.com share IP numbers with certifiedmail.com.
Name Servers
certifiedmail.com delegates to four name servers: ns1-01.azure-dns.com, ns4-01.azure-dns.info, ns2-01.azure-dns.net and ns3-01.azure-dns.org.
certifiedmail.com at least partially shares name servers with other domains, including digitalcrimescommunity.org, rhizome.net.nz, lyondellbasellindustries.eu, headandshoulders.org and traileraxlemaintenance.com.
Host names with two IP numbers: ns1-01.azure-dns.com points to 2603:1061:0:700::1 and 13.107.236.1; ns4-01.azure-dns.info points to 2620:1ec:bda:700::1 and 208.84.5.1; ns2-01.azure-dns.net points to 2620:1ec:8ec:700::1 and 150.171.21.1; ns3-01.azure-dns.org points to 2a01:111:4000:700::1 and 204.14.183.1.
Mail Servers
A single mail server handles certifiedmail.com, mail.certifiedmail.com.
Host name mail.certifiedmail.com resolves to a single IP: 66.246.118.3.