`techroll.co.kr`

DNSSEC	⚠️ Not signed
A	220.73.161.27^{🇰🇷 KT-NET220.72.0.0/13 KORnet Powered BY Korea Telecom}
NS	`techroll.co.kr` ⭐
		A	220.73.161.27^{🇰🇷 KT-NET220.72.0.0/13 KORnet Powered BY Korea Telecom}
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` ⚠️ Not in parent delegation
		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` ⚠️ Not in parent delegation
		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	`mx1.daouoffice.com` ⭐
		A	35.216.20.220^{🇰🇷 Google35.216.0.0/17}
			PTR	`prod-dose-smtp-3.daouoffice.com`
		A	35.216.41.104^{🇰🇷 Google35.216.0.0/17}
			PTR	`prod-dose-smtp-2.daouoffice.com`
		A	35.216.61.236^{🇰🇷 Google35.216.0.0/17}
			PTR	`prod-dose-smtp-1.daouoffice.com`
MX	`mx2.daouoffice.com`⁽²⁰⁾
		A	35.216.20.220^{🇰🇷 Google35.216.0.0/17}
			PTR	`prod-dose-smtp-3.daouoffice.com`
		A	35.216.41.104^{🇰🇷 Google35.216.0.0/17}
			PTR	`prod-dose-smtp-2.daouoffice.com`
		A	35.216.61.236^{🇰🇷 Google35.216.0.0/17}
			PTR	`prod-dose-smtp-1.daouoffice.com`
TXT	`v=spf1 include:_spf.daouoffice.com ~all`
SOA	`techroll.co.kr`postmaster@techroll.co.kr serial=20180628

`co.kr`

	DNSSEC	⚠️ Not signed
	NS	`g.dns.kr` ⭐ ⚠️ Not in parent delegation
	NS	`b.dns.kr` ⚠️ Not in parent delegation
	NS	`c.dns.kr` ⚠️ Not in parent delegation
	NS	`d.dns.kr` ⚠️ Not in parent delegation
	NS	`e.dns.kr` ⚠️ Not in parent delegation
	NS	`f.dns.kr` ⚠️ Not in parent delegation
	SOA	`g.dns.kr`domain-manager@nic.or.kr serial=2604270596

WOT: UNKNOWN (62/100)

NS for

techroll.co.kr

Subdomains

www.techroll.co.kr

Same first word

techroll.nl

techroll.com.au

techroll.net

techroll.de

techroll.pro

techroll.ru

techroll.co.kr

Similar names

DNS History

13 records (8 active, 5 former)

●NSns1.cafe24.co.kr2019-12-25 → 2026-04-27 · 3 obs

○ 2017-02-11 20:13:56
● 2019-12-25 12:07:22
● 2026-04-27 02:08:06

●NSns1.cafe24.com2019-12-25 → 2026-04-27 · 3 obs

○ 2017-02-11 20:13:56
● 2019-12-25 12:07:22
● 2026-04-27 02:08:06

○NSns1.maruhosting.com2015-06-06 → 2017-02-11 · 4 obs

● 2015-06-06 05:52:40
● 2017-02-11 20:13:56
○ 2019-12-25 12:07:22
○ 2026-04-27 02:08:06

●NSns2.cafe24.co.kr2019-12-25 → 2026-04-27 · 11 obs

○ 2017-02-11 20:13:56
● 2019-12-25 12:07:22
○ 2026-04-23 08:30:58
○ 2026-04-23 12:38:10
● 2026-04-23 22:50:18
○ 2026-04-26 00:14:42
● 2026-04-26 07:58:46
○ 2026-04-26 17:25:58
○ 2026-04-26 20:33:48
● 2026-04-27 02:08:04
● 2026-04-27 02:08:06

●NSns2.cafe24.com2019-12-25 → 2026-04-27 · 11 obs

○NSns2.maruhosting.com2015-06-06 → 2017-02-11 · 4 obs

● 2015-06-06 05:52:40
● 2017-02-11 20:13:56
○ 2019-12-25 12:07:22
○ 2026-04-27 02:08:06

●NStechroll.co.kr2019-12-25 → 2026-04-27 · 3 obs

○ 2017-02-11 20:13:56
● 2019-12-25 12:07:22
● 2026-04-27 02:08:06

○MXkr1-aspmx1.worksmobile.com2017-02-11 → 2017-02-11 · 3 obs

● 2017-02-11 20:13:56
○ 2019-12-25 12:07:22
○ 2026-04-27 02:08:06

○MXkr1-aspmx2.worksmobile.com2017-02-11 → 2017-02-11 · 3 obs

● 2017-02-11 20:13:56
○ 2019-12-25 12:07:22
○ 2026-04-27 02:08:06

●MXmx1.daouoffice.com2019-12-25 → 2026-04-27 · 3 obs

○ 2017-02-11 20:13:56
● 2019-12-25 12:07:22
● 2026-04-27 02:08:06

●MXmx2.daouoffice.com2019-12-25 → 2026-04-27 · 3 obs

○ 2017-02-11 20:13:56
● 2019-12-25 12:07:22
● 2026-04-27 02:08:06

○A183.111.167.1042015-06-06 → 2017-02-11 · 4 obs

● 2015-06-06 05:52:40
● 2017-02-11 20:13:56
○ 2019-12-25 12:07:22
○ 2026-04-27 02:08:06

●A220.73.161.272019-12-25 → 2026-04-27 · 3 obs

○ 2017-02-11 20:13:56
● 2019-12-25 12:07:22
● 2026-04-27 02:08:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
kr	b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr...	-
techroll.co.kr	ns1.cafe24.com, ns1.cafe24.co.kr	1 record

✅ Authoritative Response

Server:112.175.246.230

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for techroll.co.kr (unsigned zone)

⏱️ Timing

Total: 1304ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`220.73.161.27`
NS	4	`ns1.cafe24.com, ns1.cafe24.co.kr...`
MX	2	`mx2.daouoffice.com (pri: 20), mx1.daouoffice.com (pri: 10)`
TXT	1	`v=spf1 include:_spf.daouoffice.com ~all`
SOA	1	`techroll.co.kr postmaster.techroll.co.kr`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns1.cafe24.co.kr)

Analysis

Hierarchy

techroll.co.kr is a parent of www.techroll.co.kr.

Name Server Role

techroll.co.kr serves as a name server for techroll.co.kr.

Commonly, ns1.cafe24.co.kr and ns1.cafe24.com act as name servers along with techroll.co.kr.

IP Addresses

techroll.co.kr points to a single IP address: 220.73.161.27.

Other host names such as weldingstar.com, woodesign.co.kr, pitnc.co.kr, nationalppe.com and resonarlabs.com share IP numbers with techroll.co.kr.

Name Servers

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

At least part of the name servers for techroll.co.kr are shared with other domains, for instance mobiuswave.com, 1taclass.com, sihyun.shop, designlaby.org and aqara.kr.

these name servers are often used together with the name servers ns.cafe24.com, ns0.cafe24.com, dns1.cafe24.com, dns2.cafe24.com, dns1.cafe24.co.kr, dns2.cafe24.co.kr, ns1.cafe24dns.co.kr and ns3.cafe24dns.co.kr.

Host names with five IP numbers:

The host name ns1.cafe24.com points to: 112.175.246.230, 112.175.246.231, 116.126.143.242, 175.125.93.134 and 175.125.93.135.

Host names with four IP numbers:

The host name ns2.cafe24.com points to: 1.226.85.4, 1.234.0.4, 112.175.11.4 and 112.175.12.4; The host name ns1.cafe24.co.kr points to: 112.175.246.232, 112.175.246.233, 175.125.93.136 and 175.125.93.137; The host name ns2.cafe24.co.kr points to: 112.175.247.232, 112.175.247.233, 175.125.93.146 and 175.125.93.147.

Host names with one IP number:

The host name techroll.co.kr points to: 220.73.161.27.

Mail Servers

techroll.co.kr is handled by two mail servers: mx1.daouoffice.com and mx2.daouoffice.com.

techroll.co.kr uses the same mail server setup as other domains, for instance kcea.or.kr, pest7.com, inbone.kr, championusa.kr and bosomi.net.

techroll.co.kr shares at least some mail servers with other domains, for example kukka.kr, sagawafujii.co.kr, ydpsteel.com, signers.co.kr and eph.co.kr.

these mail servers are frequently used alongside the mail servers mx3.daouoffice.com.

Host names with three IP numbers:

mx1.daouoffice.com points to 35.216.20.220, 35.216.41.104 and 35.216.61.236

mx2.daouoffice.com points to 35.216.20.220, 35.216.41.104 and 35.216.61.236

Host names pointing to 35.216.20.220: mx1.daouoffice.com, mx2.daouoffice.com

Host names pointing to 35.216.41.104: mx1.daouoffice.com, mx2.daouoffice.com

Host names pointing to 35.216.61.236: mx1.daouoffice.com, mx2.daouoffice.com

techroll.co.kr - robtex.com

techroll.co.kr

co.kr

NS for

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

Name Server Role

IP Addresses

Name Servers

Mail Servers

`techroll.co.kr`

`co.kr`