`ywscience.com`

DNSSEC	⚠️ Not signed
A	210.114.6.185^{🇰🇷 KT-NET210.114.0.0/18 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	`ywscience.com` ⭐
		A	210.114.6.185^{🇰🇷 KT-NET210.114.0.0/18 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}
			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`
		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`
		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}
			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	`aspmx.daum.net` ⭐
		A	121.53.85.23^{🇰🇷 KAKAO-AY1121.53.80.0/21 Kakao}
MX	`alt.aspmx.daum.net`⁽²⁰⁾
		A	121.53.85.23^{🇰🇷 KAKAO-AY1121.53.80.0/21 Kakao}
TXT	`v=spf1 ip4:112.175.247.166 include:mail.stibee.com ~all`
SOA	`ywscience.com`postmaster@ywscience.com serial=20140512

`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=1771291435

NS for

ywscience.com

Subdomains

www.ywscience.com

Same first word

ywscience.com

DNS History

10 records (8 active, 2 former)

●NSns1.cafe24.co.kr2015-05-26 → 2026-02-28 · 2 obs

● 2015-05-26 08:00:20
● 2026-02-28 23:27:12

●NSns1.cafe24.com2015-05-26 → 2026-02-28 · 2 obs

● 2015-05-26 08:00:20
● 2026-02-28 23:27:12

●NSns2.cafe24.co.kr2015-05-26 → 2026-02-28 · 2 obs

● 2015-05-26 08:00:20
● 2026-02-28 23:27:12

●NSns2.cafe24.com2015-05-26 → 2026-02-28 · 2 obs

● 2015-05-26 08:00:20
● 2026-02-28 23:27:12

●NSywscience.com2015-05-26 → 2026-02-28 · 2 obs

● 2015-05-26 08:00:20
● 2026-02-28 23:27:12

●MXalt.aspmx.daum.net2015-05-26 → 2026-02-28 · 2 obs

● 2015-05-26 08:00:20
● 2026-02-28 23:27:12

●MXaspmx.daum.net2015-05-26 → 2026-02-28 · 2 obs

● 2015-05-26 08:00:20
● 2026-02-28 23:27:12

○A112.175.247.1662018-05-21 → 2018-05-21 · 4 obs

○ 2016-09-12 09:19:38
● 2018-05-21 17:28:56
○ 2026-02-14 17:04:00
○ 2026-02-28 23:27:12

○A112.175.85.1222015-05-26 → 2016-09-12 · 4 obs

● 2015-05-26 08:00:20
● 2016-09-12 09:19:38
○ 2018-05-21 17:28:56
○ 2026-02-28 23:27:12

●A210.114.6.1852026-02-14 → 2026-02-28 · 3 obs

○ 2018-05-21 17:28:56
● 2026-02-14 17:04:00
● 2026-02-28 23:27:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, k.gtld-servers.net, c.gtld-servers.net, i.gtld-servers.net...	-
ywscience.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 ywscience.com (unsigned zone)

⏱️ Timing

Total: 4572ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.114.6.185`
NS	4	`ns2.cafe24.co.kr, ns1.cafe24.com...`
MX	2	`ALT.ASPMX.daum.net (pri: 20), ASPMX.daum.net (pri: 10)`
TXT	1	`v=spf1 ip4:112.175.247.166 include:mail.`
SOA	1	`ywscience.com postmaster.ywscience.com`

📌 Glue Records Collected

Total: 9

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

Analysis

Hierarchy

The parent of www.ywscience.com is ywscience.com.

Name Server Role

ywscience.com serves as a name server for ywscience.com.

Together with ywscience.com, ns1.cafe24.com, ns2.cafe24.com and ns1.cafe24.co.kr are commonly used as name servers.

IP Addresses

ywscience.com points to a single IP: 210.114.6.185.

Other host names, for instance kbujn.kr, jejusansaemi.com, asiacompetition.org, himo.com and icorecorp.com share IP numbers with ywscience.com.

Name Servers

ywscience.com is delegated to five name servers: ywscience.com, ns1.cafe24.com, ns2.cafe24.com, ns1.cafe24.co.kr and ns2.cafe24.co.kr.

ywscience.com partially shares name servers with other domains; examples include dalkome.com, s-netcompany.com, hankookal.com, saejong.com and ktmi.co.kr.