`io520.com`

DNSSEC	⚠️ Not signed
A	60.199.193.248^{🇹🇼 TFN-NET60.199.193.0/24 Taiwan Fixed Network}
		PTR	`60-199-193-248.static.tfn.net.tw`
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	`io520.com` ⭐
		A	60.199.193.248^{🇹🇼 TFN-NET60.199.193.0/24 Taiwan Fixed Network}
			PTR	`60-199-193-248.static.tfn.net.tw`
MX	`www.io520.com`⁽¹⁴⁾
		A	60.199.193.248^{🇹🇼 TFN-NET60.199.193.0/24 Taiwan Fixed Network}
			PTR	`60-199-193-248.static.tfn.net.tw`
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=1774431112

MX for

io520.com

Subdomains

www.io520.com

Same first word

io520.com

DNS History

10 records (8 active, 2 former)

●NSdns1.f1.com.tw2015-06-08 → 2026-03-25 · 2 obs

● 2015-06-08 22:10:58
● 2026-03-25 09:51:06

●NSdns2.f1.com.tw2015-06-08 → 2026-03-25 · 2 obs

● 2015-06-08 22:10:58
● 2026-03-25 09:51:06

●NSns1.icstock.com.tw2026-02-23 → 2026-03-25 · 3 obs

○ 2015-06-08 22:10:58
● 2026-02-23 20:33:32
● 2026-03-25 09:51:06

●NSns2.icstock.com.tw2026-02-23 → 2026-03-25 · 3 obs

○ 2015-06-08 22:10:58
● 2026-02-23 20:33:32
● 2026-03-25 09:51:06

●NSsp234.f1.com.tw2026-02-23 → 2026-03-25 · 3 obs

○ 2015-06-08 22:10:58
● 2026-02-23 20:33:32
● 2026-03-25 09:51:06

●MXio520.com2015-06-08 → 2026-03-25 · 2 obs

● 2015-06-08 22:10:58
● 2026-03-25 09:51:06

●MXwww.io520.com2015-06-08 → 2026-03-25 · 2 obs

● 2015-06-08 22:10:58
● 2026-03-25 09:51:06

○A220.229.238.262015-06-08 → 2016-08-09 · 4 obs

● 2015-06-08 22:10:58
● 2016-08-09 02:15:02
○ 2017-03-23 22:09:10
○ 2026-03-25 09:51:06

○A60.199.193.2032017-03-23 → 2017-03-23 · 4 obs

○ 2016-08-09 02:15:02
● 2017-03-23 22:09:10
○ 2026-02-23 20:33:32
○ 2026-03-25 09:51:06

●A60.199.193.2482026-02-23 → 2026-03-25 · 3 obs

○ 2017-03-23 22:09:10
● 2026-02-23 20:33:32
● 2026-03-25 09:51:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, d.gtld-servers.net, a.gtld-servers.net, l.gtld-servers.net...	-
io520.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 io520.com (unsigned zone)

⏱️ Timing

Total: 1212ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`60.199.193.248`
NS	2	`dns2.f1.com.tw, dns1.f1.com.tw`
MX	2	`io520.com (pri: 10), www.io520.com (pri: 14)`
SOA	1	`dns1.f1.com.tw ohgo.ms23.hinet.net`

Analysis

Hierarchy

io520.com is the parent of www.io520.com.

Mail Server Role

io520.com serves as the mail server for io520.com.

www.io520.com is commonly used as a mail server with io520.com.

IP Addresses

io520.com points to IP number 60.199.193.248.

For instance, other host names www.jubeeb.com, 88dgo.com, ry37u.com, www.io520.com and 60-199-193-248.static.tfn.net.tw share IP numbers with io520.com.

Name Servers

io520.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.

io520.com shares name servers with other domains at least partially, for example bb-145.com, av235.com, bndvr.com, jin2s.com and afg057.com.