coretechsys.com - dns.ninja
coretechsys.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 116.123.96.220🇰🇷 SKB-NET116.123.0.0/16 SK Broadband | ||||||
| NS | ns1.whoisdomain.kr ⭐ | ||||||
| A | 223.130.139.7🇰🇷 NBPAP-AS-AP223.130.128.0/19 NAVER business platform cloud service | ||||||
| NS | ns2.whoisdomain.kr | ||||||
| A | 211.188.57.152🇰🇷 NBPAP-AS-AP211.188.48.0/20 NAVER business platform cloud service | ||||||
| NS | ns3.whoisdomain.kr | ||||||
| A | 61.97.189.22🇰🇷 nhn-AS-KR61.97.176.0/20 NAVER business platform cloud service | ||||||
| NS | ns4.whoisdomain.kr | ||||||
| A | 219.251.156.134🇰🇷 GDNSKR-KR219.251.156.0/24 AS23600 | ||||||
| MX | kr1-aspmx1.worksmobile.com ⭐ | ||||||
| A | 125.209.209.251🇰🇷 nhn-AS-KR125.209.208.0/22 NAVER business platform | ||||||
| PTR | crcvmail.worksmobile.com | ||||||
| MX | kr1-aspmx2.worksmobile.com(20) | ||||||
| A | 125.209.209.251🇰🇷 nhn-AS-KR125.209.208.0/22 NAVER business platform | ||||||
| PTR | crcvmail.worksmobile.com | ||||||
| TXT | google-site-verification=Sv4eB5IZfMRkyhwv5Ib56LND5bHALMAQgB-bGBrrm7o | ||||||
| SOA | ns1.whoisdomain.krhelp@whois.co.kr 2026-01-05 #1 | ||||||
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=1787923040 | ||||||
Same first word
coretechsys.com |
Similar names
Previous names
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DNS History
13 records (7 active, 6 former)
○NSlocalhost2016-09-15 → 2016-09-15 · 4 obs
● 2016-09-15 10:14:00
○ 2017-04-20 16:20:24
○ 2026-08-28 13:24:30
○NSns1.berkshire.net2007-11-01 → 2007-11-01 · 3 obs
○ 2015-06-03 23:54:50
○ 2026-08-28 13:24:30
●NSns1.whoisdomain.kr2026-08-20 → 2026-08-28 · 3 obs
● 2026-08-20 14:56:14
● 2026-08-28 13:24:30
○NSns1646.ztomy.com2015-06-03 → 2016-01-03 · 5 obs
● 2015-06-03 23:54:50
● 2016-01-03 16:29:16
○ 2016-03-30 10:27:28
○ 2026-08-28 13:24:30
○NSns2.berkshire.net2007-11-01 → 2007-11-01 · 3 obs
○ 2015-06-03 23:54:50
○ 2026-08-28 13:24:30
●NSns2.whoisdomain.kr2026-08-20 → 2026-08-28 · 3 obs
● 2026-08-20 14:56:14
● 2026-08-28 13:24:30
○NSns2646.ztomy.com2015-06-03 → 2016-01-03 · 5 obs
● 2015-06-03 23:54:50
● 2016-01-03 16:29:16
○ 2016-03-30 10:27:28
○ 2026-08-28 13:24:30
●NSns3.whoisdomain.kr2026-08-20 → 2026-08-28 · 3 obs
● 2026-08-20 14:56:14
● 2026-08-28 13:24:30
●NSns4.whoisdomain.kr2026-08-20 → 2026-08-28 · 3 obs
● 2026-08-20 14:56:14
● 2026-08-28 13:24:30
●MXkr1-aspmx1.worksmobile.com2026-08-20 → 2026-08-28 · 2 obs
● 2026-08-28 13:24:30
●MXkr1-aspmx2.worksmobile.com2026-08-20 → 2026-08-28 · 2 obs
● 2026-08-28 13:24:30
●A116.123.96.2202026-08-20 → 2026-08-28 · 3 obs
● 2026-08-20 14:56:14
● 2026-08-28 13:24:30
○A141.8.226.142015-06-03 → 2016-01-03 · 5 obs
● 2015-06-03 23:54:50
● 2016-01-03 16:29:16
○ 2016-03-30 10:27:28
○ 2026-08-28 13:24:30
🔍 DNS Trace
Analysis
IP Addresses
coretechsys.com resolves to one IP address: 116.123.96.220.
Name Servers
The authoritative name servers for coretechsys.com are ns1.whoisdomain.kr, ns2.whoisdomain.kr, ns3.whoisdomain.kr and ns4.whoisdomain.kr.
coretechsys.com shares at least some of its name servers with other domains, including uwrailpark.co.kr, allbit.co.kr, techleader.net and two others.
These name servers are frequently seen alongside the name servers dns1.yesnic.com, dns2.yesnic.com, dns3.yesnic.com and dns4.yesnic.com.
Each of the four hosts ns1.whoisdomain.kr, ns2.whoisdomain.kr, ns3.whoisdomain.kr and ns4.whoisdomain.kr points to a single IP address — ns1.whoisdomain.kr points to 223.130.139.7, ns2.whoisdomain.kr points to 211.188.57.152, ns3.whoisdomain.kr points to 61.97.189.22 and ns4.whoisdomain.kr points to 219.251.156.134.
Mail Servers
Mail for coretechsys.com is handled by two mail servers — kr1-aspmx1.worksmobile.com and kr1-aspmx2.worksmobile.com.
coretechsys.com uses an identical mail server configuration to several other domains — among them migoweb.co.kr, intofood.kr, hihompy.co.kr and two more.
coretechsys.com has at least partial mail server overlap with other domains such as openinet.com, benefitplus.kr, visarim.com and two more.
kr1-aspmx1.worksmobile.com directs to 125.209.209.251, as does kr1-aspmx2.worksmobile.com — both hostnames resolve to that one IP address.
kr1-aspmx1.worksmobile.com along with kr1-aspmx2.worksmobile.com each resolve to 125.209.209.251 IP addresses.