`173ut.com`

DNSSEC	⚠️ Not signed
A	220.228.6.241^{🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd.}
NS	`dns1.f1.com.tw` ⭐ ⚠️ Not in parent delegation
		A	218.32.213.234^{🇹🇼 NCIC-TW218.32.192.0/19 New Century InfoComm Tech Co., Ltd.}
			PTR	`sp234.f1.com.tw`
NS	`dns2.f1.com.tw` ⚠️ Not in parent delegation
		A	220.228.6.17^{🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd.}
NS	`ns1.icstock.com.tw` ⚠️ Not in zone NS records
		A	218.32.213.228^{🇹🇼 NCIC-TW218.32.192.0/19 New Century InfoComm Tech Co., Ltd.}
			PTR	`sp228.f1.com.tw`
NS	`ns2.icstock.com.tw` ⚠️ Not in zone NS records
		A	218.32.210.72^{🇹🇼 NCIC-TW218.32.210.0/24 New Century InfoComm Tech Co., Ltd.}
			PTR	`sp72.f1.com.tw`
NS	`sp234.f1.com.tw` ⚠️ Not in zone NS records
		A	218.32.213.234^{🇹🇼 NCIC-TW218.32.192.0/19 New Century InfoComm Tech Co., Ltd.}
			PTR	`sp234.f1.com.tw`
MX	`173ut.com` ⭐
		A	220.228.6.241^{🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd.}
MX	`www.173ut.com`⁽¹⁴⁾
		A	220.228.6.241^{🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd.}
SOA	`dns1.f1.com.tw`ohgo@ms23.hinet.net 2000-11-01 #9

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1774445797

MX for

173ut.com

Subdomains

www.173ut.com

Same first word

173ut.com

DNS History

9 records (8 active, 1 former)

●NSdns1.f1.com.tw2015-07-21 → 2026-03-25 · 2 obs

● 2015-07-21 10:31:24
● 2026-03-25 14:05:52

●NSdns2.f1.com.tw2015-07-21 → 2026-03-25 · 2 obs

● 2015-07-21 10:31:24
● 2026-03-25 14:05:52

●NSns1.icstock.com.tw2026-02-20 → 2026-03-25 · 3 obs

○ 2015-07-21 10:31:24
● 2026-02-20 07:22:50
● 2026-03-25 14:05:52

●NSns2.icstock.com.tw2026-02-20 → 2026-03-25 · 3 obs

○ 2015-07-21 10:31:24
● 2026-02-20 07:22:50
● 2026-03-25 14:05:52

●NSsp234.f1.com.tw2026-02-20 → 2026-03-25 · 3 obs

○ 2015-07-21 10:31:24
● 2026-02-20 07:22:50
● 2026-03-25 14:05:52

●MX173ut.com2015-07-21 → 2026-03-25 · 2 obs

● 2015-07-21 10:31:24
● 2026-03-25 14:05:52

●MXwww.173ut.com2015-07-21 → 2026-03-25 · 2 obs

● 2015-07-21 10:31:24
● 2026-03-25 14:05:52

●A220.228.6.2412026-02-20 → 2026-03-25 · 3 obs

○ 2016-09-20 18:34:36
● 2026-02-20 07:22:50
● 2026-03-25 14:05:52

○A220.228.6.62015-07-21 → 2016-09-20 · 4 obs

● 2015-07-21 10:31:24
● 2016-09-20 18:34:36
○ 2026-02-20 07:22:50
○ 2026-03-25 14:05:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, h.gtld-servers.net, f.gtld-servers.net, c.gtld-servers.net...	-
173ut.com	ns1.icstock.com.tw, ns2.icstock.com.tw, sp234.f1.com.tw	-

✅ Authoritative Response

Server:218.32.213.234

NS records: ns1.icstock.com.tw, ns2.icstock.com.tw, sp234.f1.com.tw

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 173ut.com (unsigned zone)

⏱️ Timing

Total: 1380ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`220.228.6.241`
NS	2	`dns1.f1.com.tw, dns2.f1.com.tw`
MX	2	`173ut.com (pri: 10), www.173ut.com (pri: 14)`
SOA	1	`dns1.f1.com.tw ohgo.ms23.hinet.net`

Analysis

Hierarchy

173ut.com is a parent of www.173ut.com.

Mail Server Role

173ut.com serves as the mail server for 173ut.com.

www.173ut.com often functions as the mail server, commonly paired with 173ut.com.

IP Addresses

173ut.com points to a single IP address: 220.228.6.241.

Other host names such as gr159.zm159.com, www.(0x736578)pww.com, xx507.com, mwe079.com and 01asia(0x736578).com share IP numbers with 173ut.com.

Name Servers

173ut.com is delegated to five name servers: dns1.f1.com.tw, dns2.f1.com.tw, sp234.f1.com.tw, ns1.icstock.com.tw and ns2.icstock.com.tw.

At least part of the name servers for 173ut.com are shared with other domains, for instance king467.com, u647.com, av581.com, gigi396.com and xx314.com.