`webmail.seilbolt.com`

DNSSEC	⚠️ Not signed
A	218.145.65.47^{🇰🇷 KT-NET218.144.0.0/13 KORnet Powered BY Korea Telecom}
		PTR	`rwebmail-002.fmcity.com`

`seilbolt.com`

	DNSSEC	⚠️ Not signed
	A	203.245.24.5^{🇰🇷 KT-NET203.245.0.0/18 contact chejumen@hitel.net if necessary contact country1@hitel.net if necessary contact express@hitel.net if necessary contact ezmate@hitel.net if necessary contact han322@hitel.net if necessary}
	NS	`seilbolt.com` ⭐
	NS	`ns.21th.co.kr` ⚠️ Not in zone NS records
	NS	`ns.seilbolt.com` ⚠️ Not in parent delegation
	NS	`ns1.21th.co.kr` ⚠️ Not in zone NS records
	NS	`ns1.seilbolt.com` ⚠️ Not in parent delegation
	NS	`ns2.seilbolt.com` ⚠️ Not in parent delegation
	NS	`ns3.seilbolt.com` ⚠️ Not in parent delegation
	MX	`webmail.seilbolt.com` ⭐
	TXT	`v=spf1 ip4:183.110.224.0/24 ip4:175.126.146.0/24 ip4:112.175.12.0/24 ip4:118....`
	SOA	`seilbolt.com`postmaster@seilbolt.com serial=20090929

MX for

seilbolt.com

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DNS History

1 record (1 active, 0 former)

●A218.145.65.472026-02-20 → 2026-04-14 · 2 obs

● 2026-02-20 09:52:24
● 2026-04-14 10:43:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, g.gtld-servers.net, k.gtld-servers.net, j.gtld-servers.net...	-
seilbolt.com	ns.21th.co.kr, ns1.21th.co.kr	-

✅ Authoritative Response

Server:218.145.65.143

NS records: ns.21th.co.kr, ns1.21th.co.kr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for seilbolt.com (unsigned zone)

⏱️ Timing

Total: 4197ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`218.145.65.47`

Analysis

Mail Server Role

webmail.seilbolt.com is the mail server for seilbolt.com.

IP Addresses

webmail.seilbolt.com resolves to one IP number: 218.145.65.47.

other host names including webmail.grisim.co.kr, rwebmail-002.fmcity.com, webmail.sunhae.co.kr, webmail.ilshinsteel.co.kr and webmail.my815.com share IP numbers with webmail.seilbolt.com.

webmail.seilbolt.com - robtex.com