firstdoorus.com - robtex.com
firstdoorus.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=1774722637 | ||||||
Same first word
firstdoorus.com |
DNS History
4 records (4 active, 0 former)
●NSns49.domaincontrol.com2026-03-20 → 2026-03-28 · 2 obs
● 2026-03-28 18:52:38
●NSns50.domaincontrol.com2026-03-20 → 2026-03-28 · 2 obs
● 2026-03-28 18:52:38
●MXfirstdoorus-com.mail.protection.outlook.com2026-03-20 → 2026-03-28 · 2 obs
● 2026-03-28 18:52:38
●A13.76.44.1392026-03-20 → 2026-03-28 · 2 obs
● 2026-03-28 18:52:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| firstdoorus.com | ns49.domaincontrol.com, ns50.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.72.25
NS records: ns49.domaincontrol.com, ns50.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for firstdoorus.com (unsigned zone)
⏱️ Timing
Total: 109ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 13.76.44.139 |
| NS | 2 | ns49.domaincontrol.com, ns50.domaincontrol.com |
| MX | 1 | firstdoorus-com.mail.protection.outlook. |
| TXT | 2 | ms-domain-verification=c6ddb87f-2460-419, v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | ns49.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns49.domaincontrol.com, ns49.domaincontrol.com, ns50.domaincontrol.com...)
Analysis
IP Addresses
firstdoorus.com points to a single IP number: 13.76.44.139.
Other host names, for instance mypaymoney.net, lmii-app.com, www.nimco.com.hk, www.hr365.live and bsmitacademy.com share IP numbers with firstdoorus.com.
Name Servers
firstdoorus.com is delegated to two name servers: ns49.domaincontrol.com and ns50.domaincontrol.com.
firstdoorus.com uses the same name server setup as other domains, for instance blonski.info, iopro.net, medman.com, childproofyourself.com and av300.com.
Host names with two IP numbers:
The host ns49.domaincontrol.com points to 2603:5:2182::19 and 97.74.104.25.
The host ns50.domaincontrol.com points to 2603:5:2282::19 and 173.201.72.25.
Mail Servers
The mail server for firstdoorus.com is firstdoorus-com.mail.protection.outlook.com.
The host name firstdoorus-com.mail.protection.outlook.com resolves to six IPs: 2a01:111:f403:cc09::, 2a01:111:f403:cc1a::8, 2a01:111:f403:cc1f::4, 52.101.124.117, 52.101.137.0 and 52.101.157.80.