mail.addcom21.com - dns.ninja

`mail.addcom21.com`

CNAME	`addcom21.com`
DNSSEC	⚠️ Not signed
A	116.126.143.68^{🇰🇷 SKB-NET116.126.0.0/16 SK Broadband}
NS	`addcom21.com` ⭐
		A	116.126.143.68^{🇰🇷 SKB-NET116.126.0.0/16 SK Broadband}
NS	`ns1.cafe24.co.kr`
		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}
		A	175.125.93.136^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.137^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`ns1.cafe24.com`
		A	112.175.246.230^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.246.231^{🇰🇷 KT-NET112.168.0.0/13}
		A	116.126.143.242^{🇰🇷 SKB-NET116.126.0.0/16 SK Broadband}
		A	175.125.93.134^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.135^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`ns2.cafe24.co.kr`
		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`
		A	1.226.85.4^{🇰🇷 SKB-NET1.224.0.0/13 auto-generated route object for 1.224.0.0/13}
		A	1.234.0.4^{🇰🇷 SKB-NET1.232.0.0/13 auto-generated route object for 1.232.0.0/13}
		A	112.175.11.4^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.12.4^{🇰🇷 KT-NET112.168.0.0/13}
MX	`kr1-aspmx1.worksmobile.com` ⭐
		A	125.209.209.251^{🇰🇷 nhn-AS-KR125.209.208.0/22 NAVER business platform}
			PTR	`crcvmail.worksmobile.com`
MX	`kr1-aspmx2.worksmobile.com`⁽²⁰⁾
		A	125.209.209.251^{🇰🇷 nhn-AS-KR125.209.208.0/22 NAVER business platform}
			PTR	`crcvmail.worksmobile.com`
TXT	`v=spf1 include:spf.worksmobile.com ~all`
SOA	`addcom21.com`postmaster@addcom21.com serial=20240528

`addcom21.com`

	DNSSEC	⚠️ Not signed
	A	116.126.143.68^{🇰🇷 SKB-NET116.126.0.0/16 SK Broadband}
	NS	`addcom21.com` ⭐
	NS	`ns1.cafe24.co.kr`
	NS	`ns1.cafe24.com`
	NS	`ns2.cafe24.co.kr`
	NS	`ns2.cafe24.com`
	MX	`kr1-aspmx1.worksmobile.com` ⭐
	MX	`kr1-aspmx2.worksmobile.com`⁽²⁰⁾
	TXT	`v=spf1 include:spf.worksmobile.com ~all`
	SOA	`addcom21.com`postmaster@addcom21.com serial=20240528

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DNS History

1 record (1 active, 0 former)

●CNAMEaddcom21.com2026-02-18 → 2026-07-05 · 2 obs

● 2026-02-18 15:50:06
● 2026-07-05 05:52:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, e.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net...	-
addcom21.com	ns2.cafe24.com, ns1.cafe24.com, ns2.cafe24.co.kr, ns1.cafe24.co.kr	9 records

✅ Authoritative Response

Server:1.226.85.4

NS records: ns2.cafe24.com, ns1.cafe24.com, ns2.cafe24.co.kr, ns1.cafe24.co.kr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for addcom21.com (unsigned zone)

⏱️ Timing

Total: 2240ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`addcom21.com`

📌 Glue Records Collected

Total: 9

Out-of-bailiwick: 9 (ns2.cafe24.com, ns2.cafe24.com, ns2.cafe24.com...)

Analysis

IP Addresses

mail.addcom21.com points to a single IP number: 116.126.143.68.

Additional host names — semtec.biz, boseung.kr, sammtec.net and two others — share IP numbers with mail.addcom21.com.

Name Servers

Delegation for mail.addcom21.com is to five name servers: addcom21.com, ns1.cafe24.com, ns2.cafe24.com and two others.

mail.addcom21.com partially shares its NS delegation with several other domains, including arww.kr, bomdong.com, kygstudio.com and two others.

In DNS configurations, these name servers often share authority with ns1.cafe24.co.kr, ns2.cafe24.co.kr, ns.cafe24.com and 5 other name servers.

Host names that resolve to five IP addresses:

ns1.cafe24.com points to 112.175.246.230, 112.175.246.231, 116.126.143.242 and two other IP addresses.

Host names resolving to four IP addresses:

ns2.cafe24.com maps to the following IP addresses: 1.226.85.4, 1.234.0.4, 112.175.11.4 and 112.175.12.4.

ns1.cafe24.co.kr maps to the following IP addresses: 112.175.246.232, 112.175.246.233, 175.125.93.136 and 175.125.93.137.

ns2.cafe24.co.kr maps to the following IP addresses: 112.175.247.232, 112.175.247.233, 175.125.93.146 and 175.125.93.147.

Host names pointing to a single IP address:

addcom21.com resolves to 116.126.143.68.

Mail Servers

mail.addcom21.com has two mail servers: kr1-aspmx1.worksmobile.com and kr1-aspmx2.worksmobile.com.

mail.addcom21.com shares the same mail server setup as other domains, including p-damda.com, gabaso.co.kr, ainostrading.com and two others.

mail.addcom21.com shares mail servers — at least in part — with other domains, including shsilicate.com, kobec.net, ktc-winder.com and two others.

kr1-aspmx1.worksmobile.com and kr1-aspmx2.worksmobile.com each point to one IP address — 125.209.209.251.

The host names kr1-aspmx1.worksmobile.com and kr1-aspmx2.worksmobile.com both resolve to 125.209.209.251 IP addresses.