`mail.server28.opencom.kr`

DNSSEC	⚠️ Not signed
A	121.78.88.28^{🇰🇷 KINXIDC-AS-KR121.78.80.0/20 Korea Internet Neutral eXchange}
		PTR	`servera28.opencom.com`

`server28.opencom.kr`

	DNSSEC	⚠️ Not signed
	A	121.78.88.28^{🇰🇷 KINXIDC-AS-KR121.78.80.0/20 Korea Internet Neutral eXchange}
	NS	`server28.opencom.kr` ⭐
	NS	`ns.opengogo.com` ⚠️ Not in parent delegation
	NS	`ns.openhaja.com` ⚠️ Not in parent delegation
	MX	`mail.server28.opencom.kr` ⭐
	TXT	`v=spf1 ip4:121.78.88.28 ~all`
	SOA	`server28.opencom.kr`webmaster@server28.opencom.kr 2020-10-23 #3

MX for

server28.opencom.kr

Same first word

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DNS History

1 record (1 active, 0 former)

●A121.78.88.282026-04-27 → 2026-07-05 · 2 obs

● 2026-04-27 23:13:40
● 2026-07-05 14:43:02

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:121.78.91.66

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for opencom.kr (unsigned zone)

⏱️ Timing

Total: 1812ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`121.78.88.28`

Analysis

Mail Server Role

mail.server28.opencom.kr is a mail server for server28.opencom.kr.

IP Addresses

mail.server28.opencom.kr directs to one IP number, which is 121.78.88.28.

servera28.opencom.com, server28.opencom.kr, ns2.server28.opencom.kr and ns1.server28.opencom.kr are among the host names that share IP numbers with mail.server28.opencom.kr.

mail.server28.opencom.kr - robtex.com