`opstech.com.tw`

DNSSEC	⚠️ Not signed
A	139.223.200.137^{🇹🇼 TISNET139.223.200.0/24 Far Eastone Telecommunications Co., Ltd}
		PTR	`dns1.tisnet.net.tw`
NS	`localhost` ⭐
NS	`dns1.tisnet.net.tw`
		A	139.223.200.137^{🇹🇼 TISNET139.223.200.0/24 Far Eastone Telecommunications Co., Ltd}
			PTR	`dns1.tisnet.net.tw`
NS	`dns2.tisnet.net.tw`
		A	139.223.200.177^{🇹🇼 TISNET139.223.200.0/24 Far Eastone Telecommunications Co., Ltd}
			PTR	`dns2.tisnet.net.tw`
NS	`dns3.tisnet.net.tw`
		A	207.46.144.168^{🇭🇰 Microsoft207.46.128.0/17 MICROSOFT}
MX	`mx2.zoho.com` ⭐
		A	136.143.183.44^{🇺🇸 ZohoAS136.143.182.0/23 Zoho}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx3.zoho.com`⁽²⁰⁾
		A	136.143.191.44^{🇺🇸 ZohoAS136.143.190.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx.zoho.com`⁽⁵⁰⁾
		A	136.143.183.44^{🇺🇸 ZohoAS136.143.182.0/23 Zoho}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
		A	136.143.191.44^{🇺🇸 ZohoAS136.143.190.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
TXT	`zoho-verification=zb70246639.zmverify.zoho.com.`
TXT	`zoho-verification=zb70246639.zmverify.zoho.com`
TXT	`v=spf1 include:zoho.com ~all`
SOA	`localhost`root@localhost 2026-03-12 #2

`com.tw`

	DNSSEC	⚠️ Not signed
	NS	`a.twnic.net.tw` ⭐ ⚠️ Not in parent delegation
	NS	`anytld.apnic.net` ⚠️ Not in parent delegation
	NS	`b.twnic.net.tw` ⚠️ Not in parent delegation
	NS	`c.twnic.net.tw` ⚠️ Not in parent delegation
	NS	`d.twnic.net.tw` ⚠️ Not in parent delegation
	NS	`e.twnic.net.tw` ⚠️ Not in parent delegation
	NS	`f.twnic.net.tw` ⚠️ Not in parent delegation
	NS	`g.twnic.net.tw` ⚠️ Not in parent delegation
	NS	`h.dns.tw` ⚠️ Not in parent delegation
	NS	`h.twnic.net.tw` ⚠️ Not in parent delegation
	SOA	`a.twnic.net.tw`snw@twnic.net.tw serial=2006341474

WOT: SAFE (58/100)

Previously MX for

opstech.com.tw

Same first word

opstech.net

opstech.com.tw

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DNS History

13 records (8 active, 5 former)

●NSdns1.tisnet.net.tw2026-03-26 → 2026-04-12 · 3 obs

○ 2018-09-23 12:30:34
● 2026-03-26 01:19:50
● 2026-04-12 13:07:08

●NSdns2.tisnet.net.tw2026-03-26 → 2026-04-12 · 3 obs

○ 2018-09-23 12:30:34
● 2026-03-26 01:19:50
● 2026-04-12 13:07:08

●NSdns3.tisnet.net.tw2026-03-26 → 2026-04-12 · 3 obs

○ 2018-09-23 12:30:34
● 2026-03-26 01:19:50
● 2026-04-12 13:07:08

●NSlocalhost2026-03-26 → 2026-04-12 · 3 obs

○ 2018-09-23 12:30:34
● 2026-03-26 01:19:50
● 2026-04-12 13:07:08

○NSns1.my-life04.com2008-11-22 → 2018-09-23 · 4 obs

● 2008-11-22 08:02:06
● 2018-09-23 12:30:34
○ 2026-03-26 01:19:50
○ 2026-04-12 13:07:08

○NSns2.my-life04.com2008-11-22 → 2018-09-23 · 4 obs

● 2008-11-22 08:02:06
● 2018-09-23 12:30:34
○ 2026-03-26 01:19:50
○ 2026-04-12 13:07:08

●MXmx.zoho.com2026-03-26 → 2026-04-12 · 3 obs

○ 2018-09-23 12:30:34
● 2026-03-26 01:19:50
● 2026-04-12 13:07:08

●MXmx2.zoho.com2026-03-26 → 2026-04-12 · 3 obs

○ 2018-09-23 12:30:34
● 2026-03-26 01:19:50
● 2026-04-12 13:07:08

●MXmx3.zoho.com2026-03-26 → 2026-04-12 · 3 obs

○ 2018-09-23 12:30:34
● 2026-03-26 01:19:50
● 2026-04-12 13:07:08

○MXopstech.com.tw2008-11-22 → 2018-09-23 · 4 obs

● 2008-11-22 08:02:06
● 2018-09-23 12:30:34
○ 2026-03-26 01:19:50
○ 2026-04-12 13:07:08

●A139.223.200.1372026-03-26 → 2026-04-12 · 3 obs

○ 2018-09-23 12:30:34
● 2026-03-26 01:19:50
● 2026-04-12 13:07:08

○A192.185.194.992015-08-20 → 2018-09-23 · 5 obs

○ 2008-11-22 08:02:06
● 2015-08-20 02:39:06
● 2018-09-23 12:30:34
○ 2026-03-26 01:19:50
○ 2026-04-12 13:07:08

○A74.53.105.182008-11-22 → 2008-11-22 · 3 obs

● 2008-11-22 08:02:06
○ 2015-08-20 02:39:06
○ 2026-04-12 13:07:08

🔍 DNS Trace

Analysis

IP Addresses

opstech.com.tw resolves to a single IP: 139.223.200.137.

Other host names, for instance meast.com.tw, globaltekww.com, kwanghsieh.com.tw, bigpack.com.tw and channelmaker.com.tw share IP numbers with opstech.com.tw.

Name Servers

opstech.com.tw is delegated to four name servers: localhost, dns1.tisnet.net.tw, dns2.tisnet.net.tw and dns3.tisnet.net.tw.

opstech.com.tw shares some name servers with other domains, for example nph.com.tw, 213.51.209.in-addr.arpa, 238.14.31.in-addr.arpa, sbv.suntory.co.jp and 220.100.204.in-addr.arpa.

Host names with a single IP: dns1.tisnet.net.tw points to 139.223.200.137; dns2.tisnet.net.tw points to 139.223.200.177; dns3.tisnet.net.tw points to 207.46.144.168.

Mail Servers

opstech.com.tw is handled by three mail servers: mx2.zoho.com, mx3.zoho.com and mx.zoho.com.

opstech.com.tw shares some mail servers with other domains, at least partially; for instance hennesys.com, adminalc.com, ataudit.org, prodigm.ca and lonrix.com.