`postmaster.iyosu.com`

	DNSSEC	⚠️ Not signed
	A	218.146.255.197^{🇰🇷 KT-NET218.144.0.0/13 KORnet Powered BY Korea Telecom}

`iyosu.com`

	DNSSEC	⚠️ Not signed
	A	218.146.255.197^{🇰🇷 KT-NET218.144.0.0/13 KORnet Powered BY Korea Telecom}
	NS	`iyosu.com` ⭐
	NS	`ns1.kcrone.net`
	NS	`ns2.kcrone.net`
	TXT	`v=spf1 ip4:218.146.255.197 ip4:218.146.255.198 ~all`
	SOA	`iyosu.com`root@@iyosu.com 2022-01-01 #23

Same first word

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DNS History

10 records (1 active, 9 former)

○NSiyosu.com2015-10-19 → 2016-09-18 · 4 obs

● 2015-10-19 16:34:30
● 2016-09-18 10:22:30
○ 2026-04-14 08:26:20
○ 2026-04-30 01:27:06

○NSns.iyosu.com2015-10-19 → 2016-09-18 · 4 obs

● 2015-10-19 16:34:30
● 2016-09-18 10:22:30
○ 2026-04-14 08:26:20
○ 2026-04-30 01:27:06

○NSns1.iyosu.com2015-10-19 → 2016-09-18 · 4 obs

● 2015-10-19 16:34:30
● 2016-09-18 10:22:30
○ 2026-04-14 08:26:20
○ 2026-04-30 01:27:06

○NSns2.iyosu.com2015-10-19 → 2016-09-18 · 4 obs

● 2015-10-19 16:34:30
● 2016-09-18 10:22:30
○ 2026-04-14 08:26:20
○ 2026-04-30 01:27:06

○NSns3.iyosu.com2015-10-19 → 2016-09-18 · 4 obs

● 2015-10-19 16:34:30
● 2016-09-18 10:22:30
○ 2026-04-14 08:26:20
○ 2026-04-30 01:27:06

○MXrhswssd-0008.fmcity.com2015-10-19 → 2016-09-18 · 4 obs

● 2015-10-19 16:34:30
● 2016-09-18 10:22:30
○ 2026-04-14 08:26:20
○ 2026-04-30 01:27:06

○A118.218.219.782015-10-19 → 2016-09-18 · 5 obs

○ 2015-05-25 03:39:24
● 2015-10-19 16:34:30
● 2016-09-18 10:22:30
○ 2026-04-14 08:26:20
○ 2026-04-30 01:27:06

○A183.111.141.662015-05-25 → 2015-05-25 · 3 obs

● 2015-05-25 03:39:24
○ 2026-04-14 08:26:20
○ 2026-04-30 01:27:06

●A218.146.255.1972026-04-14 → 2026-04-30 · 3 obs

○ 2016-09-18 10:22:30
● 2026-04-14 08:26:20
● 2026-04-30 01:27:06

○CNAMEiyosu.com2015-05-25 → 2016-09-18 · 4 obs

● 2015-05-25 03:39:24
● 2016-09-18 10:22:30
○ 2026-04-14 08:26:20
○ 2026-04-30 01:27:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
iyosu.com	ns1.kcrone.net, ns2.kcrone.net	-

✅ Authoritative Response

Server:52.79.148.128

NS records: ns1.kcrone.net, ns2.kcrone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for iyosu.com (unsigned zone)

⏱️ Timing

Total: 1379ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`218.146.255.197`

Analysis

IP Addresses

postmaster.iyosu.com points to a single IP number: 218.146.255.197.

Other host names, for instance kcrweb.happyulsan.co.kr, mpsrb.com, mwork.cakcr.co.kr, kcrone.net and happyulsan.co.kr share IP numbers with postmaster.iyosu.com.

postmaster.iyosu.com - robtex.com