`sejongtech.com`

DNSSEC	⚠️ Not signed
NS	`jasmine.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3aaa^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jasmine.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0aa^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jasmine.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20aa^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jasmine.ns.cloudflare.com`
		A	108.162.192.170^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jasmine.ns.cloudflare.com`
		A	172.64.32.170^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jasmine.ns.cloudflare.com`
		A	173.245.58.170^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jasmine.ns.cloudflare.com`
NS	`miles.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bcf^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miles.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1cf^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`miles.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21cf^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`miles.ns.cloudflare.com`
		A	108.162.193.207^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miles.ns.cloudflare.com`
		A	172.64.33.207^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miles.ns.cloudflare.com`
		A	173.245.59.207^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`miles.ns.cloudflare.com`
MX	`gw-spam.mailwood.com` ⭐
		A	118.128.208.153^{🇰🇷 DACOM-NET118.128.0.0/14 contact noc@bora.net if necessary}
TXT	`v=spf1 include:spf.onnet21.com ~all`
SOA	`jasmine.ns.cloudflare.com`dns@cloudflare.com serial=2401932273

`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=1777508231

Same first word

sejongtech.co.kr

sejongtech.com

DNS History

20 records (3 active, 17 former)

●NSjasmine.ns.cloudflare.com2026-03-26 → 2026-04-30 · 3 obs

○ 2018-07-16 06:26:24
● 2026-03-26 21:25:48
● 2026-04-30 00:20:00

●NSmiles.ns.cloudflare.com2026-03-26 → 2026-04-30 · 3 obs

○ 2018-07-16 06:26:24
● 2026-03-26 21:25:48
● 2026-04-30 00:20:00

○NSns1.namebrightdns.com2015-06-06 → 2018-07-16 · 6 obs

● 2015-06-06 07:24:06
○ 2015-11-01 20:39:10
● 2016-01-23 17:37:14
● 2018-07-16 06:26:24
○ 2026-03-26 21:25:48
○ 2026-04-30 00:20:00

○NSns2.namebrightdns.com2016-01-23 → 2018-07-16 · 5 obs

○ 2015-11-01 20:39:10
● 2016-01-23 17:37:14
● 2018-07-16 06:26:24
○ 2026-03-26 21:25:48
○ 2026-04-30 00:20:00

○NSnsg1.namebrightdns.com2015-06-06 → 2015-11-01 · 4 obs

● 2015-06-06 07:24:06
● 2015-11-01 20:39:10
○ 2016-01-23 17:37:14
○ 2026-04-30 00:20:00

○NSnsg2.namebrightdns.com2015-06-06 → 2015-11-01 · 4 obs

● 2015-06-06 07:24:06
● 2015-11-01 20:39:10
○ 2016-01-23 17:37:14
○ 2026-04-30 00:20:00

○MXanmail.namebrightmail.com2015-06-06 → 2015-06-06 · 3 obs

● 2015-06-06 07:24:06
○ 2015-11-01 20:39:10
○ 2026-04-30 00:20:00

●MXgw-spam.mailwood.com2026-03-26 → 2026-04-30 · 3 obs

○ 2015-11-01 20:39:10
● 2026-03-26 21:25:48
● 2026-04-30 00:20:00

○A52.200.243.1232016-04-24 → 2016-04-24 · 4 obs

○ 2016-01-23 17:37:14
● 2016-04-24 01:32:56
○ 2017-01-21 09:29:30
○ 2026-04-30 00:20:00

○A52.54.132.832017-01-21 → 2017-01-21 · 4 obs

○ 2016-04-24 01:32:56
● 2017-01-21 09:29:30
○ 2018-07-16 06:26:24
○ 2026-04-30 00:20:00

○A54.152.144.2432016-04-24 → 2016-04-24 · 4 obs

○ 2016-01-23 17:37:14
● 2016-04-24 01:32:56
○ 2017-01-21 09:29:30
○ 2026-04-30 00:20:00

○A54.174.31.2542015-11-01 → 2015-11-01 · 4 obs

○ 2015-06-06 07:24:06
● 2015-11-01 20:39:10
○ 2016-01-23 17:37:14
○ 2026-04-30 00:20:00

○A54.208.74.2152015-11-01 → 2015-11-01 · 4 obs

○ 2015-06-06 07:24:06
● 2015-11-01 20:39:10
○ 2016-01-23 17:37:14
○ 2026-04-30 00:20:00

○A54.209.90.812016-01-23 → 2016-01-23 · 4 obs

○ 2015-11-01 20:39:10
● 2016-01-23 17:37:14
○ 2016-04-24 01:32:56
○ 2026-04-30 00:20:00

○A54.85.144.1972015-06-06 → 2015-06-06 · 3 obs

● 2015-06-06 07:24:06
○ 2018-07-16 06:26:24
○ 2026-04-30 00:20:00

○A54.85.146.1862015-06-06 → 2015-06-06 · 3 obs

● 2015-06-06 07:24:06
○ 2018-07-16 06:26:24
○ 2026-04-30 00:20:00

○A54.85.54.292016-01-23 → 2016-01-23 · 4 obs

○ 2015-11-01 20:39:10
● 2016-01-23 17:37:14
○ 2016-04-24 01:32:56
○ 2026-04-30 00:20:00

○A54.88.107.1402017-01-21 → 2017-01-21 · 4 obs

○ 2016-04-24 01:32:56
● 2017-01-21 09:29:30
○ 2018-07-16 06:26:24
○ 2026-04-30 00:20:00

○CNAMEhdredirect-lb-399551664.us-east-1.elb.amazonaws.com2015-06-06 → 2016-04-24 · 4 obs

● 2015-06-06 07:24:06
● 2016-04-24 01:32:56
○ 2017-01-21 09:29:30
○ 2026-04-30 00:20:00

○CNAMEhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com2017-01-21 → 2018-07-16 · 5 obs

○ 2016-04-24 01:32:56
● 2017-01-21 09:29:30
● 2018-07-16 06:26:24
○ 2026-03-26 21:25:48
○ 2026-04-30 00:20:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net, j.gtld-servers.net...	-
sejongtech.com	miles.ns.cloudflare.com, jasmine.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.170

NS records: miles.ns.cloudflare.com, jasmine.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sejongtech.com (unsigned zone)

⏱️ Timing

Total: 342ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`jasmine.ns.cloudflare.com, miles.ns.cloudflare.com`
MX	1	`gw-spam.mailwood.com (pri: 10)`
TXT	1	`v=spf1 include:spf.onnet21.com ~all`
SOA	1	`jasmine.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (miles.ns.cloudflare.com, miles.ns.cloudflare.com, miles.ns.cloudflare.com...)

Analysis

Name Servers

sejongtech.com's delegation uses two name servers, jasmine.ns.cloudflare.com and miles.ns.cloudflare.com.

sejongtech.com shares the same name server setup as other domains, for example yamesoft.co.kr, e-ppc.co.kr, impacter.kr, arapension.net and synic.co.kr.

sejongtech.com at least partially shares name servers with other domains, including bwplastics.com, homeawaytravels.com, nicoschemberg.de, ziotester.it and outerspacegroup.com.

These name servers are often used together with celine.ns.cloudflare.com.

Host names with six IP numbers:

jasmine.ns.cloudflare.com points to: 2606:4700:50::adf5:3aaa, 2803:f800:50::6ca2:c0aa, 2a06:98c1:50::ac40:20aa, 108.162.192.170, 172.64.32.170 and 173.245.58.170.

miles.ns.cloudflare.com points to: 2606:4700:58::adf5:3bcf, 2803:f800:50::6ca2:c1cf, 2a06:98c1:50::ac40:21cf, 108.162.193.207, 172.64.33.207 and 173.245.59.207.

Mail Servers

sejongtech.com is handled by a single mail server, gw-spam.mailwood.com.

sejongtech.com shares its mail server setup with other domains, including seam.co.kr, linkmachine.co.kr, geoyoung.onnet21.com, mirae-info.net and kppack.com.

sejongtech.com shares some mail servers with other domains, at least partially, for instance cellegain.com.

gw-spam.mailwood.com points to a single IP: 118.128.208.153.

sejongtech.com - robtex.com

sejongtech.com

com