coretech-ex.com - robtex.com
coretech-ex.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | dns1.ys-net.ne.jp ⭐ | ||||||
| A | 210.175.230.253🇯🇵 FRT-AS-18074210.175.224.0/20 FRT-IDC | ||||||
| NS | dns2.ys-net.ne.jp | ||||||
| A | 118.67.93.17🇯🇵 Equinix118.67.80.0/20 Bit-isle CIDR-Block (Advertising from TY8-Network) | ||||||
| MX | mail.coretech-ex.com ⭐ | ||||||
| A | 210.175.230.204🇯🇵 FRT-AS-18074210.175.224.0/20 FRT-IDC | ||||||
| TXT | v=spf1 mx ~all | ||||||
| SOA | dns1.ys-net.ne.jpwebmaster@ys-net.ne.jp serial=2008000010 | ||||||
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=1785453537 | ||||||
Subdomains
mail.coretech-ex.com |
Same first word
coretech-ex.com |
DNS History
3 records (3 active, 0 former)
●NSdns1.ys-net.ne.jp2015-08-13 → 2026-07-30 · 2 obs
● 2026-07-30 23:33:48
●NSdns2.ys-net.ne.jp2015-08-13 → 2026-07-30 · 2 obs
● 2026-07-30 23:33:48
●MXmail.coretech-ex.com2015-08-13 → 2026-07-30 · 2 obs
● 2026-07-30 23:33:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | j.gtld-servers.net, e.gtld-servers.net, a.gtld-servers.net, d.gtld-servers.net... | - |
| coretech-ex.com | dns1.ys-net.ne.jp, dns2.ys-net.ne.jp | - |
✅ Authoritative Response
Server:210.175.230.253
NS records: dns1.ys-net.ne.jp, dns2.ys-net.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coretech-ex.com (unsigned zone)
⏱️ Timing
Total: 1101ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns2.ys-net.ne.jp, dns1.ys-net.ne.jp |
| MX | 1 | mail.coretech-ex.com (pri: 10) |
| TXT | 1 | v=spf1 mx ~all |
| SOA | 1 | dns1.ys-net.ne.jp webmaster.ys-net.ne.jp |
Analysis
Hierarchy
mail.coretech-ex.com is a subdomain of coretech-ex.com.
Name Servers
The NS records for coretech-ex.com delegate to dns1.ys-net.ne.jp and dns2.ys-net.ne.jp.
coretech-ex.com has the same name server delegation as a number of other domains, such as obm-carpet.co.jp, sanwam.jp, secure21.com and two more.
The name servers of coretech-ex.com overlap at least partially with those of other domains — among them sotokara.com, laiinstone.jp, jfca-net.or.jp and two more.
Both dns1.ys-net.ne.jp and dns2.ys-net.ne.jp have a single IP address each — dns1.ys-net.ne.jp resolves to 210.175.230.253 while dns2.ys-net.ne.jp resolves to 118.67.93.17.
Mail Servers
coretech-ex.com routes its mail through a single mail server, mail.coretech-ex.com.
mail.coretech-ex.com resolves to 210.175.230.204 and no other IP number.