`server83.opencom.kr`

DNSSEC	⚠️ Not signed
A	121.78.88.143^{🇰🇷 KINXIDC-AS-KR121.78.80.0/20 Korea Internet Neutral eXchange}
		PTR	`servera143.opencom.com`
NS	`server83.opencom.kr` ⭐
		A	121.78.88.143^{🇰🇷 KINXIDC-AS-KR121.78.80.0/20 Korea Internet Neutral eXchange}
			PTR	`servera143.opencom.com`
NS	`ns.opengogo.com` ⚠️ Not in parent delegation
		A	121.78.91.66^{🇰🇷 KINXIDC-AS-KR121.78.80.0/20 Korea Internet Neutral eXchange}
			PTR	`serverb66.opencom.com`
NS	`ns.openhaja.com` ⚠️ Not in parent delegation
		A	121.78.91.2^{🇰🇷 KINXIDC-AS-KR121.78.80.0/20 Korea Internet Neutral eXchange}
			PTR	`serverb2.opencom.com`
MX	`mail.server83.opencom.kr` ⭐
		A	121.78.88.143^{🇰🇷 KINXIDC-AS-KR121.78.80.0/20 Korea Internet Neutral eXchange}
			PTR	`servera143.opencom.com`
TXT	`v=spf1 ip4:121.78.88.25 ip4:121.78.88.26 ip4:121.78.88.143 ~all`
SOA	`server83.opencom.kr`webmaster@server83.opencom.kr 2007-09-10 #1

`opencom.kr`

	DNSSEC	⚠️ Not signed
	A	121.78.91.10^{🇰🇷 KINXIDC-AS-KR121.78.80.0/20 Korea Internet Neutral eXchange}
	NS	`opencom.kr` ⭐
	NS	`ns.opengogo.com`
	NS	`ns.openhaja.com`
	NS	`ns.test.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns.test2.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns.test3.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.deco220.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.han.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.lvs.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.myhome.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.rbtest.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.server120.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.server122.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.server144.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.server201.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.server203.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.server27.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.server28.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.server83.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.server84.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.servera120.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.servera122.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.servera167.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.servera26.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.servera92.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.shost.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns1.vt.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.deco220.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.han.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.lvs.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.myhome.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.rbtest.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.server120.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.server122.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.server144.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.server201.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.server203.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.server27.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.server28.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.server83.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.server84.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.servera120.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.servera122.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.servera167.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.servera26.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.servera92.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.shost.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.test.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.test2.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.test3.opencom.kr` ⚠️ Not in parent delegation
	NS	`ns2.vt.opencom.kr` ⚠️ Not in parent delegation
	MX	`mail.opencom.kr` ⭐
	TXT	`v=spf1 ip4:121.78.189.26 ip4:121.78.91.10 ip4:121.78.189.6 ip4:121.78.91.24 i...`
	TXT	`_globalsign-domain-verification=5c6pcueu1Dd3rBJq61vmGiuOIpPghtp2bWP7_10ABT`
	TXT	`globalsign-domain-verification=M1I2eKB5ehXK9ts1A7BJ6TICkJMR6PaI6ovBBw3HfU`
	SOA	`opencom.kr`webmaster@opencom.kr 2003-03-18 #38

NS for

server83.opencom.kr

Subdomains

mail.server83.opencom.kr

Same first word

server83.lcube-server.de

DNS History

5 records (5 active, 0 former)

●NSns.opengogo.com2026-02-17 → 2026-07-04 · 2 obs

● 2026-02-17 16:30:38
● 2026-07-04 12:46:00

●NSns.openhaja.com2026-02-17 → 2026-07-04 · 2 obs

● 2026-02-17 16:30:38
● 2026-07-04 12:46:00

●NSserver83.opencom.kr2026-02-17 → 2026-07-04 · 2 obs

● 2026-02-17 16:30:38
● 2026-07-04 12:46:00

●MXmail.server83.opencom.kr2026-02-17 → 2026-07-04 · 2 obs

● 2026-02-17 16:30:38
● 2026-07-04 12:46:00

●A121.78.88.1432026-02-17 → 2026-07-04 · 2 obs

● 2026-02-17 16:30:38
● 2026-07-04 12:46:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
kr	e.dns.kr, b.dns.kr, g.dns.kr, c.dns.kr...	-
opencom.kr	ns.openhaja.com, ns.opengogo.com	-

✅ Authoritative Response

Server:121.78.91.66

NS records: ns.openhaja.com, ns.opengogo.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opencom.kr (unsigned zone)

⏱️ Timing

Total: 1655ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`121.78.88.143`
NS	2	`ns.openhaja.com, ns.opengogo.com`
MX	1	`mail.server83.opencom.kr (pri: 10)`
TXT	1	`v=spf1 ip4:121.78.88.25 ip4:121.78.88.26`
SOA	1	`server83.opencom.kr webmaster.server83.o`

Analysis

Hierarchy

The domain mail.server83.opencom.kr falls under the parent server83.opencom.kr.

Name Server Role

server83.opencom.kr acts as a name server for server83.opencom.kr, meaning it is self-referentially delegated.

ns.opengogo.com and ns.openhaja.com are often used as name servers in combination with server83.opencom.kr.

IP Addresses

server83.opencom.kr resolves to one IP address: 121.78.88.143.

servera143.opencom.com, kokhospital.com, withme-medi.com and two other host names share IP numbers with server83.opencom.kr.

Name Servers

The NS records for server83.opencom.kr list three name servers: server83.opencom.kr, ns.opengogo.com and ns.openhaja.com.

At least some of server83.opencom.kr's name servers are shared with other domains, for example worksin.com, srpanel.com, daechimsgedu.co.kr and two more.

These name servers tend to be deployed in combination with the name servers ns1.designsoup.co.kr and ns2.designsoup.co.kr.

ns.opengogo.com has IP address 121.78.91.66, ns.openhaja.com has IP address 121.78.91.2 and server83.opencom.kr has IP address 121.78.88.143 — one address each.

Mail Servers

Mail for server83.opencom.kr is handled by a single mail server, mail.server83.opencom.kr.

mail.server83.opencom.kr resolves to 121.78.88.143 and no other IP number.

server83.opencom.kr - robtex.com