`worldclass.com.tw`

DNSSEC	⚠️ Not signed
A	103.1.220.17^{🇹🇼 YUANJHEN-TW103.1.220.0/23 Yuan-Jhen Info., Co., Ltd 12F., No.866-7, Zhongzheng Rd., Zhonghe Dist.,New Taipei City, 235, R.O.C NewTaipei City}
		PTR	`cp27.g-dns.com`
NS	`ns87.g-dns.com` ⭐
		A	103.1.220.15^{🇹🇼 YUANJHEN-TW103.1.220.0/23 Yuan-Jhen Info., Co., Ltd 12F., No.866-7, Zhongzheng Rd., Zhonghe Dist.,New Taipei City, 235, R.O.C NewTaipei City}
			PTR	`103-1-220-15.static.ip.net.tw`
NS	`ns88.g-dns.com`
		A	103.1.220.16^{🇹🇼 YUANJHEN-TW103.1.220.0/23 Yuan-Jhen Info., Co., Ltd 12F., No.866-7, Zhongzheng Rd., Zhonghe Dist.,New Taipei City, 235, R.O.C NewTaipei City}
			PTR	`103-1-220-16.static.ip.net.tw`
MX	`worldclass.com.tw` ⭐
		A	103.1.220.17^{🇹🇼 YUANJHEN-TW103.1.220.0/23 Yuan-Jhen Info., Co., Ltd 12F., No.866-7, Zhongzheng Rd., Zhonghe Dist.,New Taipei City, 235, R.O.C NewTaipei City}
			PTR	`cp27.g-dns.com`
TXT	`v=spf1 ip4:103.1.220.14 include:_spf.eee.tw +a +mx ~all`
SOA	`ns87.g-dns.com`whmlog@ipmi.tw 2026-03-27 #1

`com.tw`

	DNSSEC	⚠️ Not signed
	NS	`a.twnic.net.tw` ⭐
	SOA	`a.twnic.net.tw`snw@twnic.net.tw serial=2006337791

WOT: SAFE (58/100)

MX for

worldclass.com.tw

Subdomains

mail.worldclass.com.tw

Same first word

Similar names

classworld.org

classworld.net

classworld.com

DNS History

7 records (4 active, 3 former)

○NShinet-145.imtw.net2015-07-10 → 2017-12-09 · 4 obs

● 2015-07-10 15:40:58
● 2017-12-09 18:02:28
○ 2026-03-05 13:40:42
○ 2026-03-27 07:54:34

○NShinet-146.imtw.net2015-07-10 → 2017-12-09 · 4 obs

● 2015-07-10 15:40:58
● 2017-12-09 18:02:28
○ 2026-03-05 13:40:42
○ 2026-03-27 07:54:34

●NSns87.g-dns.com2026-03-05 → 2026-03-27 · 3 obs

○ 2017-12-09 18:02:28
● 2026-03-05 13:40:42
● 2026-03-27 07:54:34

●NSns88.g-dns.com2026-03-05 → 2026-03-27 · 3 obs

○ 2017-12-09 18:02:28
● 2026-03-05 13:40:42
● 2026-03-27 07:54:34

●MXworldclass.com.tw2015-07-10 → 2026-03-27 · 2 obs

● 2015-07-10 15:40:58
● 2026-03-27 07:54:34

●A103.1.220.172026-03-05 → 2026-03-27 · 3 obs

○ 2017-12-09 18:02:28
● 2026-03-05 13:40:42
● 2026-03-27 07:54:34

○A203.69.59.1452015-07-10 → 2017-12-09 · 4 obs

● 2015-07-10 15:40:58
● 2017-12-09 18:02:28
○ 2026-03-05 13:40:42
○ 2026-03-27 07:54:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
tw	a.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw...	16 records
worldclass.com.tw	ns87.g-dns.com, ns88.g-dns.com	-

✅ Authoritative Response

Server:103.1.220.15

NS records: ns87.g-dns.com, ns88.g-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for worldclass.com.tw (unsigned zone)

⏱️ Timing

Total: 1830ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.1.220.17`
NS	2	`ns87.g-dns.com, ns88.g-dns.com`
MX	1	`worldclass.com.tw (pri: 0)`
TXT	1	`v=spf1 ip4:103.1.220.14 include:_spf.eee`
SOA	1	`ns87.g-dns.com whmlog.ipmi.tw`

📌 Glue Records Collected

Total: 16

In-bailiwick: 14 (a.dns.tw, b.dns.tw, c.dns.tw...)

Out-of-bailiwick: 2 (anytld.apnic.net, anytld.apnic.net)

Analysis

Hierarchy

The parent of mail.worldclass.com.tw is worldclass.com.tw.

Mail Server Role

The mail server for worldclass.com.tw is worldclass.com.tw.

IP Addresses

worldclass.com.tw points to a single IP address: 103.1.220.17.

Other host names such as timeforyou.businesstoday.com.tw, lyee.gov.tw, chihong.com.tw, declieu.com.tw and itk.com.tw share IPs with worldclass.com.tw.

Name Servers

Two name servers ns87.g-dns.com and ns88.g-dns.com handle the delegation for worldclass.com.tw.

worldclass.com.tw shares the same name server setup as other domains, for example fresnel-lens.com, sainter.com.tw, happyweb.com.tw, hdh.com.tw and bashido.com.

worldclass.com.tw partially shares name servers with other domains, for example interssci.com and minmin.com.tw.

Host names with one IP number:

ns87.g-dns.com points to 103.1.220.15; ns88.g-dns.com points to 103.1.220.16.

Mail Servers

One mail server handles worldclass.com.tw; that server is worldclass.com.tw.

worldclass.com.tw points to a single IP number: 103.1.220.17.

worldclass.com.tw - robtex.com