`withsystems.com`

DNSSEC	⚠️ Not signed
A	183.111.204.9^{🇰🇷 KT-NET183.104.0.0/13 KORNET KOREA TELECOM}
		PTR	`smtp.withsystems.com`
NS	`ns1.withsystems.co.kr` ⭐
		A	121.189.8.153^{🇰🇷 KT-NET121.184.0.0/13}
NS	`ns2.withsystems.co.kr`
		A	61.96.208.227^{🇰🇷 MAINT-AS945761.96.128.0/17 REACH (Customer Route)}
			PTR	`ns2.withsystems.co.kr`
MX	`smtp.withsystems.com` ⭐
		A	183.111.204.9^{🇰🇷 KT-NET183.104.0.0/13 KORNET KOREA TELECOM}
			PTR	`smtp.withsystems.com`
TXT	`v=spf1 ip4:183.111.204.9 ~all`
SOA	`ns1.withsystems.co.kr`root@withsystems.co.kr serial=1427815290

`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=1774602407

Subdomains

smtp.withsystems.com

Same first word

withsystems.com

withsystems.net

withsystems.co.kr

DNS History

6 records (4 active, 2 former)

●NSns1.withsystems.co.kr2015-08-08 → 2026-03-27 · 2 obs

● 2015-08-08 03:28:52
● 2026-03-27 09:29:34

●NSns2.withsystems.co.kr2015-08-08 → 2026-03-27 · 2 obs

● 2015-08-08 03:28:52
● 2026-03-27 09:29:34

○MX6cfcaefcc3214dab01ffb3493f9260.pamx1.hotmail.com2015-08-08 → 2017-03-27 · 3 obs

● 2015-08-08 03:28:52
● 2017-03-27 22:28:24
○ 2026-03-27 09:29:34

●MXsmtp.withsystems.com2026-03-27 → 2026-03-27 · 2 obs

○ 2017-03-27 22:28:24
● 2026-03-27 09:29:34

○A1.255.41.402015-08-08 → 2017-03-27 · 3 obs

● 2015-08-08 03:28:52
● 2017-03-27 22:28:24
○ 2026-03-27 09:29:34

●A183.111.204.92026-03-27 → 2026-03-27 · 2 obs

○ 2017-03-27 22:28:24
● 2026-03-27 09:29:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, c.gtld-servers.net, l.gtld-servers.net, g.gtld-servers.net...	-
withsystems.com	ns1.withsystems.co.kr, ns2.withsystems.co.kr	-

✅ Authoritative Response

Server:121.189.8.153

NS records: ns1.withsystems.co.kr, ns2.withsystems.co.kr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for withsystems.com (unsigned zone)

⏱️ Timing

Total: 1242ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`183.111.204.9`
NS	2	`ns1.withsystems.co.kr, ns2.withsystems.co.kr`
MX	1	`smtp.withsystems.com (pri: 10)`
TXT	1	`v=spf1 ip4:183.111.204.9 ~all`
SOA	1	`ns1.withsystems.co.kr root.withsystems.c`

Analysis

Hierarchy

withsystems.com is the parent of smtp.withsystems.com.

IP Addresses

withsystems.com resolves to a single IP: 183.111.204.9.

Other host names share IP numbers with withsystems.com; for instance smtp.withsystems.com.

Name Servers

withsystems.com has two name servers: ns1.withsystems.co.kr and ns2.withsystems.co.kr.

withsystems.com shares the same name server setup as other domains, for example hyangsang.com, dmgec.com, yangmoon.or.kr, seoil.in and holylife.co.kr.

withsystems.com shares some name servers with other domains, for instance cmmk.or.kr, withsystems.co.kr and seokang.or.kr.

These name servers are commonly used with the name servers ns3.withsystems.co.kr.

Host names with a single IP:

ns1.withsystems.co.kr points to 121.189.8.153

ns2.withsystems.co.kr points to 61.96.208.227

Mail Servers

withsystems.com is handled by a single mail server, smtp.withsystems.com.

Host name smtp.withsystems.com points to IP 183.111.204.9.

withsystems.com - robtex.com

withsystems.com

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