`mail.isit21.com`

CNAME	`isit21.com`
DNSSEC	⚠️ Not signed
A	61.78.36.28^{🇰🇷 KT-NET61.72.0.0/13 KORnet Powered BY Korea Telecom}
A	61.78.36.29^{🇰🇷 KT-NET61.72.0.0/13 KORnet Powered BY Korea Telecom}
NS	`isit21.com` ⭐
		A	61.78.36.28^{🇰🇷 KT-NET61.72.0.0/13 KORnet Powered BY Korea Telecom}
		A	61.78.36.29^{🇰🇷 KT-NET61.72.0.0/13 KORnet Powered BY Korea Telecom}
NS	`dns1.cafe24.co.kr` ⚠️ Not in zone NS records
		A	112.175.246.228^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.246.229^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.132^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.133^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`dns1.cafe24.com` ⚠️ Not in zone NS records
		A	112.175.246.226^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.246.227^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.130^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.131^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`dns2.cafe24.co.kr` ⚠️ Not in zone NS records
		A	112.175.247.228^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.247.229^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.142^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.143^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`dns2.cafe24.com` ⚠️ Not in zone NS records
		A	112.175.247.226^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.247.227^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.140^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.141^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`ns1.cafe24.co.kr` ⚠️ Not in parent delegation
		A	112.175.246.232^{🇰🇷 KT-NET112.168.0.0/13}
			PTR	`gjit.kr`
			PTR	`snoweb.kr`
			PTR	`sinc2030.co.kr`
		A	112.175.246.233^{🇰🇷 KT-NET112.168.0.0/13}
			PTR	`ip-112-175-246-233.defastlink.net`
		A	175.125.93.136^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
			PTR	`ip-175-125-93-136.defastlink.net`
		A	175.125.93.137^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
			PTR	`ip-175-125-93-137.defastlink.net`
NS	`ns1.cafe24.com` ⚠️ Not in parent delegation
		A	112.175.246.230^{🇰🇷 KT-NET112.168.0.0/13}
			PTR	`ip-112-175-246-230.defastlink.net`
		A	112.175.246.231^{🇰🇷 KT-NET112.168.0.0/13}
			PTR	`ip-112-175-246-231.defastlink.net`
		A	116.126.143.242^{🇰🇷 SKB-NET116.126.0.0/16 SK Broadband}
			PTR	`ip-116-126-143-242.defastlink.net`
		A	175.125.93.134^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
			PTR	`ip-175-125-93-134.defastlink.net`
		A	175.125.93.135^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
			PTR	`ip-175-125-93-135.defastlink.net`
NS	`ns2.cafe24.co.kr` ⚠️ Not in parent delegation
		A	112.175.247.232^{🇰🇷 KT-NET112.168.0.0/13}
			PTR	`snoweb.kr`
			PTR	`sarchi.co.kr`
		A	112.175.247.233^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.146^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.147^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`ns2.cafe24.com` ⚠️ Not in parent delegation
		A	1.226.85.4^{🇰🇷 SKB-NET1.224.0.0/13 auto-generated route object for 1.224.0.0/13}
			PTR	`ip-1-226-85-4.defastlink.net`
		A	1.234.0.4^{🇰🇷 SKB-NET1.232.0.0/13 auto-generated route object for 1.232.0.0/13}
			PTR	`ip-1-234-0-4.defastlink.net`
		A	112.175.11.4^{🇰🇷 KT-NET112.168.0.0/13}
			PTR	`ip-112-175-11-4.defastlink.net`
		A	112.175.12.4^{🇰🇷 KT-NET112.168.0.0/13}
			PTR	`ip-112-175-12-4.defastlink.net`
MX	`alf1.aspmx.whoisworks.com` ⭐
		A	193.123.252.198^{🇰🇷 ORACLE-OCI-31898193.123.224.0/19 KINX-Oracle}
			PTR	`filter00.whoisworks.com`
MX	`alf2.aspmx.whoisworks.com` ⭐
		A	152.70.238.229^{🇰🇷 ORACLE-OCI-31898152.70.232.0/21}
			PTR	`filter01.whoisworks.com`
MX	`aspmx.whoisworks.com` ⭐
		A	193.123.252.198^{🇰🇷 ORACLE-OCI-31898193.123.224.0/19 KINX-Oracle}
			PTR	`filter00.whoisworks.com`
TXT	`v=spf1 include:spf1.whoisweb.net include:spf1.whoisworks.com ~all`
SOA	`isit21.com`postmaster@isit21.com serial=20191111

`isit21.com`

	DNSSEC	⚠️ Not signed
	A	61.78.36.28^{🇰🇷 KT-NET61.72.0.0/13 KORnet Powered BY Korea Telecom}
	A	61.78.36.29^{🇰🇷 KT-NET61.72.0.0/13 KORnet Powered BY Korea Telecom}
	NS	`isit21.com` ⭐
	NS	`dns1.cafe24.co.kr` ⚠️ Not in zone NS records
	NS	`dns1.cafe24.com` ⚠️ Not in zone NS records
	NS	`dns2.cafe24.co.kr` ⚠️ Not in zone NS records
	NS	`dns2.cafe24.com` ⚠️ Not in zone NS records
	NS	`ns1.cafe24.co.kr` ⚠️ Not in parent delegation
	NS	`ns1.cafe24.com` ⚠️ Not in parent delegation
	NS	`ns2.cafe24.co.kr` ⚠️ Not in parent delegation
	NS	`ns2.cafe24.com` ⚠️ Not in parent delegation
	MX	`alf1.aspmx.whoisworks.com` ⭐
	MX	`alf2.aspmx.whoisworks.com` ⭐
	MX	`aspmx.whoisworks.com` ⭐
	TXT	`v=spf1 include:spf1.whoisweb.net include:spf1.whoisworks.com ~all`
	SOA	`isit21.com`postmaster@isit21.com serial=20191111

Previously MX for

isit21.com

Same first word

mail.co.za

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DNS History

2 records (1 active, 1 former)

○A211.233.19.682015-08-10 → 2016-08-14 · 4 obs

● 2015-08-10 12:39:04
● 2016-08-14 01:22:48
○ 2026-02-27 06:00:00
○ 2026-02-27 06:00:04

●CNAMEisit21.com2026-02-27 → 2026-02-27 · 2 obs

● 2026-02-27 06:00:00
● 2026-02-27 06:00:04

🔍 DNS Trace

AI analysis

mail.isit21.com points to two IP numbers: 61.78.36.28 and 61.78.36.29.

Other host names such as ilac.co.kr, ilen.kr, filter1.co.kr, ipsmall.cafe24.com and baoillust.com share IPs with mail.isit21.com.

mail.isit21.com is delegated to nine name servers: isit21.com, dns1.cafe24.com, dns2.cafe24.com, ns1.cafe24.com, ns2.cafe24.com, dns1.cafe24.co.kr, dns2.cafe24.co.kr, ns1.cafe24.co.kr and ns2.cafe24.co.kr.

mail.isit21.com at least partially shares name servers with other domains, for example dalcom-i.com, tipsmall.co.kr, ganpanshop.co.kr, junkycar.net and ollehpension.net.

These name servers are often used together with ns.cafe24.com and ns0.cafe24.com.

Host names with five IP numbers:

The host name ns1.cafe24.com points to 112.175.246.230, 112.175.246.231, 116.126.143.242, 175.125.93.134 and 175.125.93.135.

Host names with four IP numbers:

The host name dns1.cafe24.com points to 112.175.246.226, 112.175.246.227, 175.125.93.130 and 175.125.93.131.

The host name dns2.cafe24.com points to 112.175.247.226, 112.175.247.227, 175.125.93.140 and 175.125.93.141.

The host name ns2.cafe24.com points to 1.226.85.4, 1.234.0.4, 112.175.11.4 and 112.175.12.4.

The host name dns1.cafe24.co.kr points to 112.175.246.228, 112.175.246.229, 175.125.93.132 and 175.125.93.133.

The host name dns2.cafe24.co.kr points to 112.175.247.228, 112.175.247.229, 175.125.93.142 and 175.125.93.143.

The host name ns1.cafe24.co.kr points to 112.175.246.232, 112.175.246.233, 175.125.93.136 and 175.125.93.137.

The host name ns2.cafe24.co.kr points to 112.175.247.232, 112.175.247.233, 175.125.93.146 and 175.125.93.147.

Host names with two IP numbers:

The host name isit21.com points to 61.78.36.28 and 61.78.36.29.

mail.isit21.com is handled by three mail servers: aspmx.whoisworks.com, alf1.aspmx.whoisworks.com and alf2.aspmx.whoisworks.com.

mail.isit21.com shares at least partially some mail servers with other domains, for instance kangyusystem.com, isit21.com, lawlogos.com, daeu.co.kr and comsmart.co.kr.

Host names with one IP:

aspmx.whoisworks.com points to 193.123.252.198

alf1.aspmx.whoisworks.com points to 193.123.252.198

alf2.aspmx.whoisworks.com points to 152.70.238.229

Names pointing to 193.123.252.198: aspmx.whoisworks.com, alf1.aspmx.whoisworks.com

mail.isit21.com - robtex.com

mail.isit21.com

isit21.com