`example-training.com`

DNSSEC	⚠️ Not signed
NS	`ns1.iwinv.kr` ⭐ ⚠️ Not in zone NS records
		A	115.68.233.20^{🇰🇷 SMILESERV-AS-KR115.68.128.0/17}
NS	`ns2.iwinv.kr` ⚠️ Not in zone NS records
		A	115.68.100.115^{🇰🇷 SMILESERV-AS-KR115.68.0.0/17}
TXT	`v=spf1 ip4:115.68.220.230 ~all`
SOA	`ns1.iwinv.kr`root@iwinv.kr 2025-12-24 #6

`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.net`nstld@verisign-grs.com serial=1776231537

Subdomains

mail.example-training.com

Same first word

example-training.com

DNS History

2 records (2 active, 0 former)

●NSns1.iwinv.kr2026-03-24 → 2026-04-15 · 2 obs

● 2026-03-24 00:26:10
● 2026-04-15 06:03:46

●NSns2.iwinv.kr2026-03-24 → 2026-04-15 · 2 obs

● 2026-03-24 00:26:10
● 2026-04-15 06:03:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
example-training.com	ns1.iwinv.kr, ns2.iwinv.kr	-

✅ Authoritative Response

Server:115.68.233.20

NS records: ns1.iwinv.kr, ns2.iwinv.kr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for example-training.com (unsigned zone)

⏱️ Timing

Total: 1127ms | Queries: -

📄 Records

Type	Count	Sample Data
TXT	1	`v=spf1 ip4:115.68.220.230 ~all`
SOA	1	`ns1.iwinv.kr root.iwinv.kr`

Analysis

Hierarchy

example-training.com is the parent of mail.example-training.com.

Name Servers

example-training.com is delegated to two name servers ns1.iwinv.kr and ns2.iwinv.kr.

example-training.com shares the same name server setup as other domains, for instance multicav.co.kr, jjalbang.net, beondsoul.com, chclab.com and rcenter.kr.

example-training.com shares at least some name servers with other domains, for example pointacademy.kr, sspch.or.kr and hearthstudy.com.

Host names with one IP number:

ns1.iwinv.kr points to 115.68.233.20

ns2.iwinv.kr points to 115.68.100.115

example-training.com - robtex.com