`gctech21.com`

DNSSEC	⚠️ Not signed
A	119.205.211.251^{🇰🇷 KT-NET119.200.0.0/13 Korea Telecom, Seoul, Korea}
NS	`ns1.namesvr.net` ⭐ ⚠️ Not in zone NS records
		A	112.175.14.100^{🇰🇷 KT-NET112.168.0.0/13}
NS	`ns2.namesvr.net` ⚠️ Not in zone NS records
		A	183.111.144.126^{🇰🇷 KT-NET183.104.0.0/13 KORNET KOREA TELECOM}
MX	`mail.gctech21.com` ⭐
		A	119.205.211.163^{🇰🇷 KT-NET119.200.0.0/13 Korea Telecom, Seoul, Korea}
			PTR	`mail.uro.kr`
			PTR	`mail2.dotnetpia.co.kr`
			PTR	`mail.giduzon.co.kr`
			PTR	`mail.woojungsa.co.kr`
SOA	`ns1.namesvr.net`root@gctech21.com 2022-03-07 #14

`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=1777357106

rank #252311 globally
rank #105178 in the tld
📈 Tranco rank: #907,273

Subdomains

mail.gctech21.com

Same first word

gctech21.com

DNS History

6 records (4 active, 2 former)

○NS(root)2015-11-11 → 2017-12-02 · 4 obs

● 2015-11-11 05:54:50
● 2017-12-02 21:58:20
○ 2026-03-02 05:45:42
○ 2026-04-28 06:42:28

●NSns1.namesvr.net2026-03-02 → 2026-04-28 · 3 obs

○ 2017-12-02 21:58:20
● 2026-03-02 05:45:42
● 2026-04-28 06:42:28

●NSns2.namesvr.net2026-03-02 → 2026-04-28 · 3 obs

○ 2017-12-02 21:58:20
● 2026-03-02 05:45:42
● 2026-04-28 06:42:28

○NSroot.gctech21.com2015-11-11 → 2017-12-02 · 4 obs

● 2015-11-11 05:54:50
● 2017-12-02 21:58:20
○ 2026-03-02 05:45:42
○ 2026-04-28 06:42:28

●MXmail.gctech21.com2015-11-11 → 2026-04-28 · 2 obs

● 2015-11-11 05:54:50
● 2026-04-28 06:42:28

●A119.205.211.2512015-11-11 → 2026-04-28 · 2 obs

● 2015-11-11 05:54:50
● 2026-04-28 06:42:28

🔍 DNS Trace

Analysis

Hierarchy

The parent of mail.gctech21.com is gctech21.com.

IP Addresses

gctech21.com points to a single IP address: 119.205.211.251.

Other host names such as leejaisoo.com, www.ti-um.kr, se6096.com, thb.kr and www.jongrogx.com share IPs with gctech21.com.

Name Servers

Two name servers ns1.namesvr.net and ns2.namesvr.net handle the delegation for gctech21.com.

gctech21.com shares the same name server setup as other domains, for example kmgd.co.kr, intermediary.co.kr, tveng.co.kr, smstud.com and hongkyungmin.co.kr.

gctech21.com at least partially shares name servers with other domains, for example ds-home.co.kr, sundown.kr, seoeunfa.co.kr, secokomos.co.kr and mglogis.co.kr.

These name servers are often used together with ns1.inpiad.kr and ns2.inpiad.kr.

Host names with one IP number:

ns1.namesvr.net points to 112.175.14.100; ns2.namesvr.net points to 183.111.144.126.

Mail Servers

The mail.gctech21.com mail server handles gctech21.com.

mail.gctech21.com points to a single IP number: 119.205.211.163.

gctech21.com - robtex.com

gctech21.com

com