first1tech.com - dns.ninja

first1tech.com

DNSSEC⚠️ Not signed
NSns75.koreadns.kr ⚠️ Not in zone NS records
NSns84.koreadns.kr ⚠️ Not in zone NS records

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1784813807

Subdomains

smtp.first1tech.com
zmail.first1tech.com

Same first word

first1tech.com

Similar names

1firsttech.com

DNS History

28 records (2 active, 26 former)

20162017201820192020202120222023202420252026NSns75.koreadns.krns84.koreadns.kra.misconfigured.dns.server.invalidns1.asadal.netns1.koreaidc.comns2.asadal.netns2.koreaidc.comns231.dnsever.comns259.dnsever.comns3.koreaidc.comns31.dnsever.comns65.dnsever.comns82.dnsever.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comaspmx4.googlemail.comaspmx5.googlemail.commailapp.hiworks.co.krsmtp.first1tech.comzmail.first1tech.comA110.45.146.164118.129.167.11218.145.71.217
○NSa.misconfigured.dns.server.invalid2026-03-31 → 2026-07-23 · 2 obs
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○NSns1.asadal.net2021-03-19 → 2021-03-30 · 5 obs
○ 2017-05-16 11:33:28
● 2021-03-19 21:52:36
● 2021-03-30 07:13:10
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○NSns1.koreaidc.com2026-03-31 → 2026-07-23 · 2 obs
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○NSns2.asadal.net2021-03-19 → 2021-03-30 · 5 obs
○ 2017-05-16 11:33:28
● 2021-03-19 21:52:36
● 2021-03-30 07:13:10
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○NSns2.koreaidc.com2026-03-31 → 2026-07-23 · 2 obs
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○NSns231.dnsever.com2015-05-28 → 2017-05-16 · 4 obs
● 2015-05-28 23:41:46
● 2017-05-16 11:33:28
○ 2021-03-19 21:52:36
○ 2026-07-23 13:55:56
○NSns259.dnsever.com2015-05-28 → 2017-05-16 · 4 obs
● 2015-05-28 23:41:46
● 2017-05-16 11:33:28
○ 2021-03-19 21:52:36
○ 2026-07-23 13:55:56
○NSns3.koreaidc.com2026-03-31 → 2026-07-23 · 2 obs
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○NSns31.dnsever.com2015-05-28 → 2017-05-16 · 4 obs
● 2015-05-28 23:41:46
● 2017-05-16 11:33:28
○ 2021-03-19 21:52:36
○ 2026-07-23 13:55:56
○NSns65.dnsever.com2015-05-28 → 2017-05-16 · 4 obs
● 2015-05-28 23:41:46
● 2017-05-16 11:33:28
○ 2021-03-19 21:52:36
○ 2026-07-23 13:55:56
●NSns75.koreadns.kr2026-03-31 → 2026-07-23 · 3 obs
○ 2021-03-30 07:13:10
● 2026-03-31 19:25:16
● 2026-07-23 13:55:56
○NSns82.dnsever.com2015-05-28 → 2017-05-16 · 4 obs
● 2015-05-28 23:41:46
● 2017-05-16 11:33:28
○ 2021-03-19 21:52:36
○ 2026-07-23 13:55:56
●NSns84.koreadns.kr2026-03-31 → 2026-07-23 · 3 obs
○ 2021-03-30 07:13:10
● 2026-03-31 19:25:16
● 2026-07-23 13:55:56
○MXalt1.aspmx.l.google.com2015-05-28 → 2021-03-30 · 4 obs
● 2015-05-28 23:41:46
● 2021-03-30 07:13:10
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○MXalt2.aspmx.l.google.com2015-05-28 → 2021-03-30 · 4 obs
● 2015-05-28 23:41:46
● 2021-03-30 07:13:10
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○MXalt3.aspmx.l.google.com2021-03-19 → 2021-03-30 · 5 obs
○ 2017-05-16 11:33:28
● 2021-03-19 21:52:36
● 2021-03-30 07:13:10
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○MXalt4.aspmx.l.google.com2021-03-19 → 2021-03-30 · 5 obs
○ 2017-05-16 11:33:28
● 2021-03-19 21:52:36
● 2021-03-30 07:13:10
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○MXaspmx.l.google.com2015-05-28 → 2021-03-30 · 4 obs
● 2015-05-28 23:41:46
● 2021-03-30 07:13:10
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○MXaspmx2.googlemail.com2015-05-28 → 2017-05-16 · 4 obs
● 2015-05-28 23:41:46
● 2017-05-16 11:33:28
○ 2021-03-19 21:52:36
○ 2026-07-23 13:55:56
○MXaspmx3.googlemail.com2015-05-28 → 2017-05-16 · 4 obs
● 2015-05-28 23:41:46
● 2017-05-16 11:33:28
○ 2021-03-19 21:52:36
○ 2026-07-23 13:55:56
○MXaspmx4.googlemail.com2015-05-28 → 2017-05-16 · 4 obs
● 2015-05-28 23:41:46
● 2017-05-16 11:33:28
○ 2021-03-19 21:52:36
○ 2026-07-23 13:55:56
○MXaspmx5.googlemail.com2015-05-28 → 2017-05-16 · 4 obs
● 2015-05-28 23:41:46
● 2017-05-16 11:33:28
○ 2021-03-19 21:52:36
○ 2026-07-23 13:55:56
○MXmailapp.hiworks.co.kr2026-03-31 → 2026-07-23 · 2 obs
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○MXsmtp.first1tech.com2026-03-31 → 2026-04-08 · 5 obs
○ 2021-03-30 07:13:10
● 2026-03-31 19:25:16
● 2026-04-08 03:46:12
○ 2026-07-08 06:54:32
○ 2026-07-23 13:55:56
○MXzmail.first1tech.com2026-03-31 → 2026-04-08 · 5 obs
○ 2021-03-30 07:13:10
● 2026-03-31 19:25:16
● 2026-04-08 03:46:12
○ 2026-07-08 06:54:32
○ 2026-07-23 13:55:56
○A110.45.146.1642021-03-19 → 2021-03-30 · 5 obs
○ 2017-05-16 11:33:28
● 2021-03-19 21:52:36
● 2021-03-30 07:13:10
○ 2026-03-31 19:25:16
○ 2026-07-23 13:55:56
○A118.129.167.112015-05-28 → 2017-05-16 · 4 obs
● 2015-05-28 23:41:46
● 2017-05-16 11:33:28
○ 2021-03-19 21:52:36
○ 2026-07-23 13:55:56
○A218.145.71.2172026-03-31 → 2026-04-08 · 5 obs
○ 2021-03-30 07:13:10
● 2026-03-31 19:25:16
● 2026-04-08 03:46:12
○ 2026-07-08 06:54:32
○ 2026-07-23 13:55:56

🔍 DNS Trace

Analysis

Hierarchy

The parent domain of smtp.first1tech.com and zmail.first1tech.com is first1tech.com.

Name Servers

first1tech.com is served by two delegated name servers, ns75.koreadns.kr and ns84.koreadns.kr.

first1tech.com has the same name server delegation as a number of other domains, such as keoz.co.kr, pharosars.com, jinrichurch.org and two more.

There is at least partial name server overlap between first1tech.com and other domains — apple21.co.kr, dogtoc.com, sinhera.com and two more among them.

The name servers ns1.koreaidc.com, ns2.koreaidc.com and ns3.koreaidc.com are often found in combination with these name servers.