`mail.mastercheng.com.tw`

DNSSEC	⚠️ Not signed
A	60.248.109.57^{🇹🇼 HiNet60.248.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
		PTR	`mail.jfgroup.com.tw`

`mastercheng.com.tw`

	DNSSEC	⚠️ Not signed
	A	60.248.109.57^{🇹🇼 HiNet60.248.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
	NS	`router.mastercheng.com.tw` ⭐ ⚠️ Not in parent delegation
	NS	`dns1.mastercheng.com.tw` ⚠️ Not in zone NS records
	NS	`dns2.mastercheng.com.tw` ⚠️ Not in zone NS records
	MX	`mail.mastercheng.com.tw` ⭐
	TXT	`v=spf1 ip4:60.248.109.57/32 -all`
	SOA	`router.mastercheng.com.tw`root@mastercheng.com.tw 2001-01-01 #1

MX for

mastercheng.com.tw

Same first word

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Similar names

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mlai.in

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amli.cn

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liam.cn

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mail.site

mail.select

DNS History

1 record (1 active, 0 former)

●A60.248.109.572026-04-20 → 2026-04-25 · 2 obs

● 2026-04-20 01:50:14
● 2026-04-25 01:34:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
tw	a.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw...	-
com.tw	h.dns.tw, a.twnic.net.tw, anytld.apnic.net, h.twnic.net.tw...	17 records
mastercheng.com.tw	dns1.mastercheng.com.tw, dns2.mastercheng.com.tw	2 records

✅ Authoritative Response

Server:60.248.109.55

NS records: dns1.mastercheng.com.tw, dns2.mastercheng.com.tw

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 1797ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`60.248.109.57`

📌 Glue Records Collected

Total: 19

In-bailiwick: 2 (dns2.mastercheng.com.tw, dns1.mastercheng.com.tw)

Out-of-bailiwick: 17 (h.twnic.net.tw, g.twnic.net.tw, f.twnic.net.tw...)

Analysis

Mail Server Role

mail.mastercheng.com.tw serves as the mail server for mastercheng.com.tw.

IP Addresses

mail.mastercheng.com.tw points to a single IP address: 60.248.109.57.

Other host names such as router.jfgroup.com.tw, mail.licomled.com, mastercheng.com.tw, dns1.toa-twn.com.tw and bigpower314.com.tw share IP numbers with mail.mastercheng.com.tw.

mail.mastercheng.com.tw - robtex.com