costsfirst.com - robtex.com
costsfirst.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=1778476366 | ||||||
Subdomains
www.costsfirst.com |
Same first word
costsfirst.com |
DNS History
10 records (4 active, 6 former)
●NSns73.domaincontrol.com2015-08-28 → 2026-05-11 · 2 obs
● 2026-05-11 05:13:16
●NSns74.domaincontrol.com2015-08-28 → 2026-05-11 · 2 obs
● 2026-05-11 05:13:16
●MXcostsfirst-com.mail.protection.outlook.com2026-02-16 → 2026-05-11 · 3 obs
● 2026-02-16 15:23:54
● 2026-05-11 05:13:16
○MXmailstore1.secureserver.net2015-08-28 → 2019-09-20 · 4 obs
● 2019-09-20 20:15:26
○ 2026-02-16 15:23:54
○ 2026-05-11 05:13:16
○MXsmtp.secureserver.net2015-08-28 → 2019-09-20 · 4 obs
● 2019-09-20 20:15:26
○ 2026-02-16 15:23:54
○ 2026-05-11 05:13:16
●A13.52.203.2292026-03-11 → 2026-05-11 · 3 obs
● 2026-03-11 17:31:06
● 2026-05-11 05:13:16
○A2002::3699:3fb62017-04-05 → 2019-09-20 · 5 obs
● 2017-04-05 11:53:32
● 2019-09-20 20:15:26
○ 2026-02-16 15:23:54
○ 2026-05-11 05:13:16
○A54.153.63.1822016-03-09 → 2019-09-20 · 5 obs
● 2016-03-09 21:54:02
● 2019-09-20 20:15:26
○ 2026-02-16 15:23:54
○ 2026-05-11 05:13:16
○A54.241.23.762026-02-16 → 2026-03-01 · 5 obs
● 2026-02-16 15:23:54
● 2026-03-01 12:26:02
○ 2026-03-11 17:31:06
○ 2026-05-11 05:13:16
○A54.241.251.1562015-08-28 → 2015-12-09 · 4 obs
● 2015-12-09 09:11:28
○ 2016-03-09 21:54:02
○ 2026-05-11 05:13:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net, e.gtld-servers.net... | - |
| costsfirst.com | ns73.domaincontrol.com, ns74.domaincontrol.com | 4 records |
✅ Authoritative Response
Server:173.201.74.47
NS records: ns73.domaincontrol.com, ns74.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for costsfirst.com (unsigned zone)
⏱️ Timing
Total: 308ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 13.52.203.229 |
| NS | 2 | ns73.domaincontrol.com, ns74.domaincontrol.com |
| MX | 1 | costsfirst-com.mail.protection.outlook.c |
| TXT | 3 | 2quomc61t76inbh8bngevlhjh8, NETORG11984666.onmicrosoft.com... |
| SOA | 1 | ns73.domaincontrol.com dns.jomax.net |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns73.domaincontrol.com, ns73.domaincontrol.com, ns74.domaincontrol.com...)
Analysis
Hierarchy
The parent of www.costsfirst.com is costsfirst.com.
IP Addresses
costsfirst.com points to a single IP: 13.52.203.229.
Name Servers
Two name servers ns73.domaincontrol.com and ns74.domaincontrol.com handle delegation for costsfirst.com.
costsfirst.com uses the same name server setup as other domains, for example 16s.co, lisasblingthings.com, themillennialwalk.com, bulldogvx.us and apartmentsatpineypoint.com.
Host names with two IP numbers:
ns73.domaincontrol.com points to: 2603:5:21a4::2f and 97.74.106.47
ns74.domaincontrol.com points to: 2603:5:22a4::2f and 173.201.74.47
Mail Servers
costsfirst.com is handled by a single mail server, costsfirst-com.mail.protection.outlook.com.
Hostname costsfirst-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c92c::2, 2a01:111:f403:c946::7, 2a01:111:f403:f802::3, 2a01:111:f403:f804::2, 52.101.9.12, 52.101.9.14, 52.101.40.24 and 52.101.50.1.