link4s.com - robtex.com
link4s.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 121.254.171.115🇰🇷 DACOM-NET121.254.128.0/17 contact noc@bora.net if necessary | ||||||
| PTR | web115.koreafree.co.kr | ||||||
| NS | ns1.koreafree.co.kr ⭐ | ||||||
| A | 121.254.171.112🇰🇷 DACOM-NET121.254.128.0/17 contact noc@bora.net if necessary | ||||||
| NS | ns1.whoiskorea.co.kr | ||||||
| A | 121.254.171.111🇰🇷 DACOM-NET121.254.128.0/17 contact noc@bora.net if necessary | ||||||
| MX | mail.link4s.com ⭐ | ||||||
| A | 121.254.171.115🇰🇷 DACOM-NET121.254.128.0/17 contact noc@bora.net if necessary | ||||||
| PTR | web115.koreafree.co.kr | ||||||
| TXT | v=spf1 ip4:121.254.171.115 ~all | ||||||
| SOA | ns1.koreafree.co.krwebmaster@koreafree.co.kr 2011-02-21 #9 | ||||||
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=1776021732 | ||||||
Subdomains
mail.link4s.com |
Same first word
link4s.com |
Similar names
4links.biz |
4links.com.au |
4links.com |
4links.ca |
4links.co.uk |
4links.org |
4links.net |
4links.it |
links4.com |
links4.us |
4links.de |
links4.info |
4links.ru |
DNS History
6 records (4 active, 2 former)
●NSns1.koreafree.co.kr2015-08-07 → 2026-04-12 · 2 obs
● 2026-04-12 19:31:26
●NSns1.whoiskorea.co.kr2015-08-07 → 2026-04-12 · 2 obs
● 2026-04-12 19:31:26
●MXmail.link4s.com2015-08-07 → 2026-04-12 · 2 obs
● 2026-04-12 19:31:26
●A121.254.171.1152019-12-29 → 2026-04-12 · 3 obs
● 2019-12-29 11:16:24
● 2026-04-12 19:31:26
○A211.172.241.1382015-08-07 → 2015-08-07 · 3 obs
○ 2015-11-26 14:04:00
○ 2026-04-12 19:31:26
○A211.43.220.1252015-11-26 → 2017-02-05 · 5 obs
● 2015-11-26 14:04:00
● 2017-02-05 17:36:28
○ 2019-12-29 11:16:24
○ 2026-04-12 19:31:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | i.gtld-servers.net, d.gtld-servers.net, c.gtld-servers.net, g.gtld-servers.net... | - |
| link4s.com | ns1.whoiskorea.co.kr, ns1.koreafree.co.kr | - |
✅ Authoritative Response
Server:121.254.171.111
NS records: ns1.whoiskorea.co.kr, ns1.koreafree.co.kr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for link4s.com (unsigned zone)
⏱️ Timing
Total: 1162ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 121.254.171.115 |
| NS | 2 | ns1.whoiskorea.co.kr, ns1.koreafree.co.kr |
| MX | 1 | mail.link4s.com (pri: 10) |
| TXT | 1 | v=spf1 ip4:121.254.171.115 ~all |
| SOA | 1 | ns1.koreafree.co.kr webmaster.koreafree. |
Analysis
Hierarchy
The parent of mail.link4s.com is link4s.com.
IP Addresses
link4s.com points to a single IP: 121.254.171.115.
Other host names, for instance www.sok88.co.kr, www.chunileng.co.kr, kascan.com, ayna.kr and www.kumhotrading.com share IP numbers with link4s.com.
Name Servers
Two name servers ns1.koreafree.co.kr and ns1.whoiskorea.co.kr handle delegation for link4s.com.
link4s.com uses the same name server setup as other domains, for example 1600-5612.com, k-bot.co.kr, hrda.or.kr, akofi.org and fabre.co.kr.
link4s.com partially shares name servers with other domains; examples include scalekorea.com, i-knc.com, backjeemt.com, comad21.com and hcyc.kr.
these name servers are commonly used with the name servers ns2.whoiskorea.co.kr.
Host names with one IP number: The host name ns1.koreafree.co.kr points to 121.254.171.112 and the host name ns1.whoiskorea.co.kr points to 121.254.171.111.
Mail Servers
link4s.com is handled by a single mail server, mail.link4s.com.
mail.link4s.com points to a single IP: 121.254.171.115.