ctr-i.com - dns.ninja
ctr-i.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.sdsns.com ⭐ | ||||||
| A | 211.115.203.112🇰🇷 HOSTWAY-AS-KR211.115.203.0/24 SejongTelecom.co.ltd | ||||||
| NS | ns2.sdsns.com | ||||||
| A | 211.239.157.110🇰🇷 HOSTWAY-AS-KR211.239.157.0/24 SejongTelecom.co.ltd | ||||||
| MX | mail.ctr-i.com ⭐ | ||||||
| A | 223.130.85.61🇰🇷 DIRECT-AS-KR223.130.85.0/24 | ||||||
| PTR | sp-mu-mh01.mailnara.co.kr | ||||||
| TXT | v=spf1 ip4:223.130.93.79 ~all | ||||||
| SOA | ns1.sdsns.comfirechoi@sds.co.kr 2010-07-26 #10 | ||||||
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=1786168859 | ||||||
Subdomains
mail.ctr-i.com |
Same first word
ctr-i.com |
Similar names
DNS History
3 records (3 active, 0 former)
●MXmail.ctr-i.com2015-05-20 → 2026-08-08 · 2 obs
● 2026-08-08 06:11:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| ctr-i.com | ns1.sdsns.com, ns2.sdsns.com | 2 records |
✅ Authoritative Response
Server:211.115.203.112
NS records: ns1.sdsns.com, ns2.sdsns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ctr-i.com (unsigned zone)
⏱️ Timing
Total: 550ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns1.sdsns.com, ns2.sdsns.com |
| MX | 1 | mail.ctr-i.com (pri: 0) |
| TXT | 1 | v=spf1 ip4:223.130.93.79 ~all |
| SOA | 1 | ns1.sdsns.com firechoi.sds.co.kr |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.sdsns.com, ns2.sdsns.com)
Analysis
Hierarchy
ctr-i.com is the parent zone for mail.ctr-i.com.
Name Servers
ctr-i.com uses two name servers for its delegation: ns1.sdsns.com and ns2.sdsns.com.
ctr-i.com has the same name server delegation as a number of other domains, such as juyeongns.com, dnstextile.com, kaffa.com and two more.
ctr-i.com partially shares its NS delegation with several other domains, including sangahtile.co.kr, xn--ob0bs79awa206c7ov.com, valex.co.kr and two others.
These name servers regularly co-occur with the name servers ns1.direct.co.kr, ns3.direct.co.kr and ns4.direct.co.kr.
ns1.sdsns.com resolves to 211.115.203.112. ns2.sdsns.com resolves to 211.239.157.110. Both host names point to a single IP number.
Mail Servers
ctr-i.com routes its mail through a single mail server, mail.ctr-i.com.
mail.ctr-i.com directs to just one IP number, 223.130.85.61.