tk87u.com - dns.ninja

`tk87u.com`

DNSSEC	⚠️ Not signed
A	220.228.6.6^{🇹🇼 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	`tk87u.com` ⭐
		A	220.228.6.6^{🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd.}
MX	`www.tk87u.com`⁽¹⁴⁾
		A	220.228.6.6^{🇹🇼 NCIC-TW220.228.0.0/19 New Century InfoComm Tech Co., Ltd.}
SOA	`dns1.f1.com.tw`ohgo@ms23.hinet.net 2000-11-01 #8

`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=1783228816

MX for

tk87u.com

Subdomains

www.tk87u.com

Same first word

tk87u.com

Similar names

ktu87.com

DNS History

9 records (8 active, 1 former)

●NSdns1.f1.com.tw2019-12-14 → 2026-07-05 · 2 obs

● 2019-12-14 18:20:28
● 2026-07-05 05:42:30

●NSdns2.f1.com.tw2019-12-14 → 2026-07-05 · 2 obs

● 2019-12-14 18:20:28
● 2026-07-05 05:42:30

●NSns1.icstock.com.tw2026-02-14 → 2026-07-05 · 3 obs

○ 2019-12-14 18:20:28
● 2026-02-14 16:22:56
● 2026-07-05 05:42:30

●NSns2.icstock.com.tw2026-02-14 → 2026-07-05 · 3 obs

○ 2019-12-14 18:20:28
● 2026-02-14 16:22:56
● 2026-07-05 05:42:30

●NSsp234.f1.com.tw2026-02-14 → 2026-07-05 · 3 obs

○ 2019-12-14 18:20:28
● 2026-02-14 16:22:56
● 2026-07-05 05:42:30

●MXtk87u.com2019-12-14 → 2026-07-05 · 2 obs

● 2019-12-14 18:20:28
● 2026-07-05 05:42:30

●MXwww.tk87u.com2019-12-14 → 2026-07-05 · 2 obs

● 2019-12-14 18:20:28
● 2026-07-05 05:42:30

○A220.228.6.42019-12-14 → 2019-12-14 · 3 obs

● 2019-12-14 18:20:28
○ 2026-02-14 16:22:56
○ 2026-07-05 05:42:30

●A220.228.6.62026-02-14 → 2026-07-05 · 3 obs

○ 2019-12-14 18:20:28
● 2026-02-14 16:22:56
● 2026-07-05 05:42:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, e.gtld-servers.net, h.gtld-servers.net, i.gtld-servers.net...	-
tk87u.com	ns1.icstock.com.tw, ns2.icstock.com.tw, sp234.f1.com.tw	-

✅ Authoritative Response

Server:218.32.213.228

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tk87u.com (unsigned zone)

⏱️ Timing

Total: 1896ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`220.228.6.6`
NS	2	`dns2.f1.com.tw, dns1.f1.com.tw`
MX	2	`www.tk87u.com (pri: 14), tk87u.com (pri: 10)`
SOA	1	`dns1.f1.com.tw ohgo.ms23.hinet.net`

Analysis

Hierarchy

www.tk87u.com is delegated beneath tk87u.com.

Mail Server Role

tk87u.com is listed as a mail server for itself.

www.tk87u.com routinely functions as a mail server together with tk87u.com.

IP Addresses

tk87u.com resolves to one IP address: 220.228.6.6.

kgtk37.com, www.e0401.com, srm.idv.tw and two other host names share IP numbers with tk87u.com.

Name Servers

tk87u.com has five name servers, which are dns1.f1.com.tw, dns2.f1.com.tw, sp234.f1.com.tw and two others.

There is at least partial name server overlap between tk87u.com and other domains — c764.com, kiss-ut.com, tm88h.com and two more among them.

It is common to find these name servers alongside the name servers ns1.icstock.com.tw, ns2.icstock.com.tw, ns1.oknet.tw and two others.

Hosts with just one IP address:

dns1.f1.com.tw resolves to the IP address 218.32.213.234.

dns2.f1.com.tw resolves to the IP address 220.228.6.17.

sp234.f1.com.tw resolves to the IP address 218.32.213.234.

ns1.icstock.com.tw resolves to the IP address 218.32.213.228.

ns2.icstock.com.tw resolves to the IP address 218.32.210.72.

dns1.f1.com.tw and sp234.f1.com.tw each have 218.32.213.234 IP addresses.

Mail Servers

tk87u.com delegates mail to two mail servers, namely tk87u.com and www.tk87u.com.

Each of tk87u.com and www.tk87u.com points to exactly one IP address: 220.228.6.6.

tk87u.com and www.tk87u.com each have 220.228.6.6 IP addresses.