4ulink.com - robtex.com
4ulink.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 106.10.110.178🇰🇷 MARK1-AS-KR106.10.96.0/20 LX prefix, announced by DreamMark1 | ||||||
| NS | ns1.linex.kr ⭐ ⚠️ Not in parent delegation | ||||||
| A | 49.238.193.42🇰🇷 MARK1-AS-KR49.238.192.0/19 LX prefix | ||||||
| NS | ns1.lxn.co.kr ⚠️ Not in zone NS records | ||||||
| A | 49.238.193.42🇰🇷 MARK1-AS-KR49.238.192.0/19 LX prefix | ||||||
| NS | ns2.linex.kr ⚠️ Not in parent delegation | ||||||
| A | 49.236.176.11🇰🇷 HYOSUNGITX-AS-KR49.236.176.0/20 SejongTelecom.co.ltd | ||||||
| NS | ns2.lxn.co.kr ⚠️ Not in zone NS records | ||||||
| A | 49.236.176.11🇰🇷 HYOSUNGITX-AS-KR49.236.176.0/20 SejongTelecom.co.ltd | ||||||
| MX | mail.4ulink.com ⭐ | ||||||
| A | 113.30.66.248 | ||||||
| SOA | ns1.linex.krhostmaster@4ulink.com 2024-02-13 #2 | ||||||
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=1771291435 | ||||||
Subdomains
mail.4ulink.com |
Same first word
Similar names
link4u.com |
link4u.it |
klin4u.com |
link4u.fr |
link4u.eu |
link4u.co |
link4u.online |
link4u.de |
link4u.net |
link4u.co.il |
link4u.cc |
link4u.be |
DNS History
8 records (6 active, 2 former)
●NSns1.lxn.co.kr2026-03-13 → 2026-03-23 · 3 obs
● 2026-03-13 16:45:40
● 2026-03-23 19:28:08
●NSns2.lxn.co.kr2026-03-13 → 2026-03-23 · 3 obs
● 2026-03-13 16:45:40
● 2026-03-23 19:28:08
●MXmail.4ulink.com2015-08-19 → 2026-03-23 · 2 obs
● 2026-03-23 19:28:08
●A106.10.110.1782026-03-13 → 2026-03-23 · 3 obs
● 2026-03-13 16:45:40
● 2026-03-23 19:28:08
○A106.10.110.1802020-03-18 → 2020-03-18 · 4 obs
● 2020-03-18 09:26:56
○ 2026-03-13 16:45:40
○ 2026-03-23 19:28:08
○A113.30.66.2482015-08-19 → 2017-04-10 · 4 obs
● 2017-04-10 12:04:00
○ 2020-03-18 09:26:56
○ 2026-03-23 19:28:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | i.gtld-servers.net, g.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net... | - |
| 4ulink.com | ns1.lxn.co.kr, ns2.lxn.co.kr | - |
✅ Authoritative Response
Server:49.238.193.42
NS records: ns1.lxn.co.kr, ns2.lxn.co.kr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 4ulink.com (unsigned zone)
⏱️ Timing
Total: 4866ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 106.10.110.178 |
| NS | 2 | ns2.linex.kr, ns1.linex.kr |
| MX | 1 | mail.4ulink.com (pri: 10) |
| SOA | 1 | ns1.linex.kr hostmaster.4ulink.com |
Analysis
Hierarchy
4ulink.com is the parent of mail.4ulink.com.
IP Addresses
4ulink.com points to IP number 106.10.110.178.
Name Servers
4ulink.com is delegated to four name servers: ns1.linex.kr, ns2.linex.kr, ns1.lxn.co.kr and ns2.lxn.co.kr.
4ulink.com shares name servers with other domains at least partially, for example eglusainc.com, baylogisticsinc.co.kr, 141.26.223.in-addr.arpa, prolinelogic.co.kr and ggl.co.kr.
These name servers are commonly used with localhost.
Host names sharing one IP address:
The host name ns1.linex.kr points to 49.238.193.42.
The host name ns2.linex.kr points to 49.236.176.11.
The host name ns1.lxn.co.kr points to 49.238.193.42.
The host name ns2.lxn.co.kr points to 49.236.176.11.
Host names pointing to 49.238.193.42: ns1.linex.kr and ns1.lxn.co.kr
Host names pointing to 49.236.176.11: ns2.linex.kr and ns2.lxn.co.kr
Mail Servers
4ulink.com is handled by a single mail server, mail.4ulink.com.
mail.4ulink.com points to a single IP: 113.30.66.248.