sejongflex.com - dns.ninja

`sejongflex.com`

DNSSEC	⚠️ Not signed
A	203.245.44.83^{🇰🇷 KT-NET203.245.0.0/18 contact chejumen@hitel.net if necessary contact country1@hitel.net if necessary contact express@hitel.net if necessary contact ezmate@hitel.net if necessary contact han322@hitel.net if necessary}
NS	`sejongflex.com` ⭐
		A	203.245.44.83^{🇰🇷 KT-NET203.245.0.0/18 contact chejumen@hitel.net if necessary contact country1@hitel.net if necessary contact express@hitel.net if necessary contact ezmate@hitel.net if necessary contact han322@hitel.net if necessary}
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 ip4:203.245.44.83 ~all`
SOA	`sejongflex.com`postmaster@sejongflex.com serial=20200612

`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=1786700934

NS for

sejongflex.com

Subdomains

ns1.sejongflex.com

Same first word

sejongflex.com

DNS History

12 records (8 active, 4 former)

●NSns1.cafe24.co.kr2026-02-23 → 2026-08-14 · 3 obs

○ 2017-04-21 06:45:36
● 2026-02-23 02:18:00
● 2026-08-14 09:59:56

●NSns1.cafe24.com2026-02-23 → 2026-08-14 · 3 obs

○ 2017-04-21 06:45:36
● 2026-02-23 02:18:00
● 2026-08-14 09:59:56

○NSns1.sejongflex.com2015-08-01 → 2017-04-21 · 4 obs

● 2015-08-01 02:36:06
● 2017-04-21 06:45:36
○ 2026-02-23 02:18:00
○ 2026-08-14 09:59:56

●NSns2.cafe24.co.kr2026-02-23 → 2026-08-14 · 3 obs

○ 2017-04-21 06:45:36
● 2026-02-23 02:18:00
● 2026-08-14 09:59:56

●NSns2.cafe24.com2026-02-23 → 2026-08-14 · 3 obs

○ 2017-04-21 06:45:36
● 2026-02-23 02:18:00
● 2026-08-14 09:59:56

●NSsejongflex.com2026-02-23 → 2026-08-14 · 3 obs

○ 2017-04-21 06:45:36
● 2026-02-23 02:18:00
● 2026-08-14 09:59:56

○MXaspmx1.naver.com2015-08-01 → 2017-04-21 · 4 obs

● 2015-08-01 02:36:06
● 2017-04-21 06:45:36
○ 2026-02-23 02:18:00
○ 2026-08-14 09:59:56

○MXaspmx2.naver.com2015-08-01 → 2017-04-21 · 4 obs

● 2015-08-01 02:36:06
● 2017-04-21 06:45:36
○ 2026-02-23 02:18:00
○ 2026-08-14 09:59:56

●MXkr1-aspmx1.worksmobile.com2026-02-23 → 2026-08-14 · 3 obs

○ 2017-04-21 06:45:36
● 2026-02-23 02:18:00
● 2026-08-14 09:59:56

●MXkr1-aspmx2.worksmobile.com2026-02-23 → 2026-08-14 · 3 obs

○ 2017-04-21 06:45:36
● 2026-02-23 02:18:00
● 2026-08-14 09:59:56

○A116.122.37.742015-08-01 → 2017-04-21 · 4 obs

● 2015-08-01 02:36:06
● 2017-04-21 06:45:36
○ 2026-02-23 02:18:00
○ 2026-08-14 09:59:56

●A203.245.44.832026-02-23 → 2026-08-14 · 3 obs

○ 2017-04-21 06:45:36
● 2026-02-23 02:18:00
● 2026-08-14 09:59:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, f.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net...	-
sejongflex.com	ns2.cafe24.com, ns1.cafe24.com, ns2.cafe24.co.kr, ns1.cafe24.co.kr	9 records

✅ Authoritative Response

Server:112.175.247.232

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 sejongflex.com (unsigned zone)

⏱️ Timing

Total: 1418ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`203.245.44.83`
NS	4	`ns1.cafe24.com, ns2.cafe24.com...`
MX	2	`kr1-aspmx2.worksmobile.com (pri: 20), kr1-aspmx1.worksmobile.com (pri: 10)`
TXT	1	`v=spf1 ip4:203.245.44.83 ~all`
SOA	1	`sejongflex.com postmaster.sejongflex.com`

📌 Glue Records Collected

Total: 9

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

Analysis

Hierarchy

The domain ns1.sejongflex.com falls under the parent sejongflex.com.

Name Server Role

sejongflex.com is listed as a name server for sejongflex.com — it is in-bailiwick, authoritative for its own domain.

It is common to see ns1.cafe24.com, ns2.cafe24.com and ns1.cafe24.co.kr acting as name servers in combination with sejongflex.com.

IP Addresses

sejongflex.com has exactly one IP address — 203.245.44.83.

newisland.kr, kocla.or.kr, livingcare.co plus two other host names have IP numbers in common with sejongflex.com.

Name Servers

The delegation of sejongflex.com is to five name servers, including sejongflex.com, ns1.cafe24.com, ns2.cafe24.com and two others.

At least some of sejongflex.com's name servers are shared with other domains, for example ripple.co.kr, suicide.or.kr, valvehwasung.com and two more.

These name servers tend to co-occur with ns2.cafe24.co.kr, ns.cafe24.com, dns1.cafe24.com and 6 other name servers in the same DNS delegations.

Hosts with five IP addresses:

ns1.cafe24.com has IP addresses 112.175.246.230, 112.175.246.231 and 116.126.143.242 along with two other addresses.

Host names with four IP addresses:

ns2.cafe24.com directs to 1.226.85.4, 1.234.0.4, 112.175.11.4 and 112.175.12.4.

ns1.cafe24.co.kr directs to 112.175.246.232, 112.175.246.233, 175.125.93.136 and 175.125.93.137.

ns2.cafe24.co.kr directs to 112.175.247.232, 112.175.247.233, 175.125.93.146 and 175.125.93.147.

Host names resolving to a single IP address:

sejongflex.com has the IP address 203.245.44.83.

Mail Servers

sejongflex.com uses two mail servers, kr1-aspmx1.worksmobile.com and kr1-aspmx2.worksmobile.com.

The mail server setup of sejongflex.com matches that of other domains such as 3dmeca.com, ssunap.com, bodram.com and two others.

At least some of the mail servers used by sejongflex.com are shared with other domains: virusbus.com, 1st-ave.kr, labelik.com and two others among them.

kr1-aspmx1.worksmobile.com resolves to 125.209.209.251; kr1-aspmx2.worksmobile.com resolves to the same IP address, 125.209.209.251.

Both kr1-aspmx1.worksmobile.com and kr1-aspmx2.worksmobile.com resolve to 125.209.209.251 IP addresses each.