mailcortex.com - dns.ninja
mailcortex.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 162.243.208.83🇺🇸 DIGITALOCEAN162.243.192.0/18 DigitalOcean | ||||||
| PTR | host2.c4k.net | ||||||
| NS | ns1.c4k.net ⚠️ Not in zone NS records | ||||||
| NS | ns2.c4k.net ⚠️ Not in zone NS records | ||||||
| A | 162.243.208.168🇺🇸 DIGITALOCEAN162.243.192.0/18 DigitalOcean | ||||||
| PTR | ns2.c4k.net | ||||||
| MX | mail.mailcortex.com ⭐ | ||||||
| A | 162.243.208.83🇺🇸 DIGITALOCEAN162.243.192.0/18 DigitalOcean | ||||||
| PTR | host2.c4k.net | ||||||
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=1781473720 | ||||||
Subdomains
Same first word
mailcortex.com |
Similar names
DNS History
6 records (4 active, 2 former)
●NSns1.c4k.net2026-03-26 → 2026-06-14 · 4 obs
○ 2026-02-18 23:15:02
● 2026-03-26 05:31:50
● 2026-06-14 22:09:14
○NSns1.mailcortex.com2015-08-07 → 2026-03-26 · 8 obs
● 2019-02-15 07:56:50
○ 2026-02-17 21:03:06
○ 2026-02-18 23:15:02
● 2026-03-26 05:31:50
● 2026-03-26 20:13:50
○ 2026-05-18 10:09:42
○ 2026-06-14 22:09:14
●NSns2.c4k.net2026-03-26 → 2026-06-14 · 4 obs
○ 2026-02-18 23:15:02
● 2026-03-26 05:31:50
● 2026-06-14 22:09:14
○NSns2.mailcortex.com2015-08-07 → 2026-03-26 · 8 obs
● 2019-02-15 07:56:50
○ 2026-02-17 21:03:06
○ 2026-02-18 23:15:02
● 2026-03-26 05:31:50
● 2026-03-26 20:13:50
○ 2026-05-18 10:09:42
○ 2026-06-14 22:09:14
●MXmail.mailcortex.com2015-08-07 → 2026-06-14 · 8 obs
● 2019-02-15 07:56:50
○ 2026-02-17 21:03:06
○ 2026-02-18 23:15:02
● 2026-03-26 05:31:50
● 2026-03-26 20:13:50
○ 2026-05-18 10:09:42
● 2026-06-14 22:09:14
●A162.243.208.832015-08-07 → 2026-06-14 · 8 obs
● 2019-02-15 07:56:50
○ 2026-02-17 21:03:06
○ 2026-02-18 23:15:02
● 2026-03-26 05:31:50
● 2026-03-26 20:13:50
○ 2026-05-18 10:09:42
● 2026-06-14 22:09:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | c.gtld-servers.net, h.gtld-servers.net, m.gtld-servers.net, l.gtld-servers.net... | - |
| mailcortex.com | ns2.c4k.net, ns1.c4k.net | - |
✅ Authoritative Response
Server:162.243.208.168
NS records: ns2.c4k.net, ns1.c4k.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mailcortex.com (unsigned zone)
⏱️ Timing
Total: 281ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| MX | 1 | mail.mailcortex.com (pri: 10) |
| TXT | 1 | v=spf1 a mx -all |
| SOA | 1 | ns1.mailcortex.com hostmaster.mailcortex |
Analysis
Hierarchy
dns2.mailcortex.com and dns1.mailcortex.com are both subdomains of mailcortex.com.
IP Addresses
mailcortex.com resolves to one IP address: 162.243.208.83.
mail.host2.c4k.net, yen-family.com, ns1.c4k.net and two other host names share IP numbers with mailcortex.com.
Name Servers
Two name servers handle the delegation for mailcortex.com: ns1.c4k.net and ns2.c4k.net.
mailcortex.com delegates to the same name servers as other domains, c4k.net among them.
Hosts with just one IP address:
The hostname ns2.c4k.net resolves to 162.243.208.168.
Mail Servers
Mail for mailcortex.com is handled by a single mail server, mail.mailcortex.com.
mail.mailcortex.com carries a single IP number, which is 162.243.208.83.