`ytechvac.com.tw`

DNSSEC	⚠️ Not signed
A	210.61.163.86^{🇹🇼 HiNet210.61.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
		PTR	`ytechvac.com.tw`
		PTR	`mail.ytechvac.com.tw`
		PTR	`ns1.ytechvac.com.tw`
		PTR	`ns2.ytechvac.com.tw`
		PTR	`ns.ytechvac.com.tw`
		PTR	`www.ytechvac.com.tw`
NS	`ns2.ytechvac.com.tw` ⭐
NS	`ns.ytechvac.com.tw` ⚠️ Not in zone NS records
		A	210.61.163.86^{🇹🇼 HiNet210.61.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`ytechvac.com.tw`
			PTR	`mail.ytechvac.com.tw`
			PTR	`ns1.ytechvac.com.tw`
			PTR	`ns2.ytechvac.com.tw`
			PTR	`ns.ytechvac.com.tw`
			PTR	`www.ytechvac.com.tw`
MX	`mail.ytechvac.com.tw` ⭐
		A	210.61.163.86^{🇹🇼 HiNet210.61.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`ytechvac.com.tw`
			PTR	`mail.ytechvac.com.tw`
			PTR	`ns1.ytechvac.com.tw`
			PTR	`ns2.ytechvac.com.tw`
			PTR	`ns.ytechvac.com.tw`
			PTR	`www.ytechvac.com.tw`
TXT	`v=spf1 ip4:210.61.163.86 mx:mail.ytechvac.com.tw a:mail.ytechvac.com.tw -all`
SOA	`ns.ytechvac.com.tw`service@ytechvac.com.tw 2024-11-05 #17

`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=2006343282

WOT: SAFE (58/100)

PTR for

86.163.61.210.in-addr.arpa

Previously NS for

ytechvac.com.tw

Subdomains

mail.ytechvac.com.tw

www.ytechvac.com.tw

ns.ytechvac.com.tw

ns2.ytechvac.com.tw

Same first word

ytechvac.com.tw

Similar names

vacytech.com

DNS History

6 records (4 active, 2 former)

●NSns.ytechvac.com.tw2015-06-24 → 2026-04-18 · 5 obs

● 2015-06-24 07:16:48
● 2016-06-17 17:03:04
○ 2018-06-30 13:01:28
● 2026-03-08 23:23:46
● 2026-04-18 00:00:52

●NSns2.ytechvac.com.tw2026-03-08 → 2026-04-18 · 3 obs

○ 2018-06-30 13:01:28
● 2026-03-08 23:23:46
● 2026-04-18 00:00:52

○NSytechvac.com.tw2018-06-30 → 2018-06-30 · 4 obs

○ 2016-06-17 17:03:04
● 2018-06-30 13:01:28
○ 2026-03-08 23:23:46
○ 2026-04-18 00:00:52

●MXmail.ytechvac.com.tw2018-06-30 → 2026-04-18 · 3 obs

○ 2016-06-17 17:03:04
● 2018-06-30 13:01:28
● 2026-04-18 00:00:52

○MXns.ytechvac.com.tw2015-06-24 → 2016-06-17 · 4 obs

● 2015-06-24 07:16:48
● 2016-06-17 17:03:04
○ 2018-06-30 13:01:28
○ 2026-04-18 00:00:52

●A210.61.163.862015-06-24 → 2026-04-18 · 2 obs

● 2015-06-24 07:16:48
● 2026-04-18 00:00:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com.tw	h.dns.tw, f.twnic.net.tw, anytld.apnic.net, h.twnic.net.tw...	-
ytechvac.com.tw	ns.ytechvac.com.tw, ns2.ytechvac.com.tw	2 records

✅ Authoritative Response

Server:210.61.163.86

NS records: ns.ytechvac.com.tw, ns2.ytechvac.com.tw

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for com.tw (unsigned zone)

⏱️ Timing

Total: 606ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.61.163.86`
NS	1	`ns.ytechvac.com.tw`
MX	1	`mail.ytechvac.com.tw (pri: 0)`
TXT	1	`v=spf1 ip4:210.61.163.86 mx:mail.ytechva`
SOA	1	`ns.ytechvac.com.tw service.ytechvac.com.`

📌 Glue Records Collected

Total: 2

In-bailiwick: 2 (ns2.ytechvac.com.tw, ns.ytechvac.com.tw)

Analysis

Hierarchy

ytechvac.com.tw is a parent of mail.ytechvac.com.tw, www.ytechvac.com.tw, ns.ytechvac.com.tw and ns2.ytechvac.com.tw.

IP Addresses

ytechvac.com.tw resolves to one IP number: 210.61.163.86.

Other host names, for instance mail.ytechvac.com.tw, www.ytechvac.com.tw and ns.ytechvac.com.tw share IP numbers with ytechvac.com.tw.

Name Servers

ytechvac.com.tw's delegation uses two name servers: ns2.ytechvac.com.tw and ns.ytechvac.com.tw.

ytechvac.com.tw at least partially shares name servers with other domains, for example ns2.ytechvac.com.tw.

Host names with a single IP number: The host name ns.ytechvac.com.tw points to 210.61.163.86.

Mail Servers

A single mail server handles ytechvac.com.tw, mail.ytechvac.com.tw.

Host name mail.ytechvac.com.tw resolves to a single IP: 210.61.163.86.

ytechvac.com.tw - robtex.com

ytechvac.com.tw

com.tw