`doubleday.com.tw`

DNSSEC	⚠️ Not signed
A	210.59.228.247^{🇹🇼 HiNet210.59.128.0/17 (HiNet) Chunghwa Telecom Co., Ltd.}
		PTR	`pollux7.url.com.tw`
NS	`dns2.twmail.org` ⭐
		A	2001:b034:201:400:211:72:204:250^{🇹🇼 HiNet2001:b020::/27}
			PTR	`2001-b034-0201-0400-0211-0072-0204-0250.hinet-ip6.hinet.net`
		A	211.72.204.250^{🇹🇼 HiNet211.72.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
NS	`dns.twmail.org`
		A	2001:b034:1:800:210:59:228:119^{🇹🇼 HiNet2001:b020::/27}
			PTR	`2001-b034-0001-0800-0210-0059-0228-0119.hinet-ip6.hinet.net`
		A	210.59.228.119^{🇹🇼 HiNet210.59.128.0/17 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`dns.twmail.org`
			PTR	`vweb.url.com.tw`
MX	`ntvirus.url.com.tw` ⭐
		A	210.59.228.117^{🇹🇼 HiNet210.59.128.0/17 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`ntvirus4.url.com.tw`
		A	210.59.228.172^{🇹🇼 HiNet210.59.128.0/17 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`ntvirus.url.com.tw`
		A	210.59.228.173^{🇹🇼 HiNet210.59.128.0/17 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`ntvirus2.url.com.tw`
		A	210.59.228.178^{🇹🇼 HiNet210.59.128.0/17 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`ntvirus3.url.com.tw`
MX	`ntvirus2.url.com.tw` ⭐
		A	210.59.228.117^{🇹🇼 HiNet210.59.128.0/17 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`ntvirus4.url.com.tw`
		A	210.59.228.172^{🇹🇼 HiNet210.59.128.0/17 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`ntvirus.url.com.tw`
		A	210.59.228.173^{🇹🇼 HiNet210.59.128.0/17 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`ntvirus2.url.com.tw`
		A	210.59.228.178^{🇹🇼 HiNet210.59.128.0/17 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`ntvirus3.url.com.tw`
TXT	`v=spf1 a mx ip4:210.59.228.0/24 ip4:210.59.229.0/25`
SOA	`dns.twmail.org`admin@corp.url.com.tw serial=1774399208

`com.tw`

	DNSSEC	⚠️ Not signed
	NS	`a.twnic.net.tw` ⭐
	NS	`anytld.apnic.net`
	NS	`b.twnic.net.tw`
	NS	`c.twnic.net.tw`
	NS	`d.twnic.net.tw`
	NS	`e.twnic.net.tw`
	NS	`f.twnic.net.tw`
	NS	`g.twnic.net.tw`
	NS	`h.dns.tw`
	NS	`h.twnic.net.tw`
	SOA	`a.twnic.net.tw`snw@twnic.net.tw serial=2006336975

WOT: SAFE (58/100)

Same first word

doubleday.com

doubleday.co.uk

doubleday.org

doubleday.me

doubleday.jp

doubleday.it

doubleday.de

doubleday.co.kr

doubleday.biz

doubleday.com.tw

doubleday.io

doubleday.ru

doubleday.com.au

doubleday.ca

doubleday.eu

doubleday.us

doubleday.co.nz

doubleday.net

DNS History

5 records (5 active, 0 former)

●NSdns.twmail.org2018-05-15 → 2026-03-25 · 2 obs

● 2018-05-15 17:54:44
● 2026-03-25 01:38:02

●NSdns2.twmail.org2018-05-15 → 2026-03-25 · 2 obs

● 2018-05-15 17:54:44
● 2026-03-25 01:38:02

●MXntvirus.url.com.tw2018-05-15 → 2026-03-25 · 2 obs

● 2018-05-15 17:54:44
● 2026-03-25 01:38:02

●MXntvirus2.url.com.tw2018-05-15 → 2026-03-25 · 2 obs

● 2018-05-15 17:54:44
● 2026-03-25 01:38:02

●A210.59.228.2472018-05-15 → 2026-03-25 · 2 obs

● 2018-05-15 17:54:44
● 2026-03-25 01:38:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
tw	a.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw...	-
doubleday.com.tw	dns.twmail.org, dns2.twmail.org	-

✅ Authoritative Response

Server:211.72.204.250

NS records: dns.twmail.org, dns2.twmail.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 1474ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.59.228.247`
NS	2	`dns2.twmail.org, dns.twmail.org`
MX	2	`ntvirus.url.com.tw (pri: 10), ntvirus2.url.com.tw (pri: 10)`
TXT	1	`v=spf1 a mx ip4:210.59.228.0/24 ip4:210.`
SOA	1	`dns.twmail.org admin.corp.url.com.tw`

Analysis

IP Addresses

doubleday.com.tw points to a single IP number: 210.59.228.247.

other host names for instance sintron.com.tw, syy3.com.tw, twntea.com.tw, sunga.com.tw and ubn-elite.com share IP numbers with doubleday.com.tw.

Name Servers

doubleday.com.tw is delegated to two name servers: dns2.twmail.org and dns.twmail.org.

doubleday.com.tw shares the same name server setup as other domains, for example jen-hsien.com.tw, lansirlin.org.tw, ipglory.com, higear.url.tw and bidbuy4u.com.tw.

doubleday.com.tw partially shares name servers with other domains, for instance sax.net.tw, zentw.com and ch168.com.tw.

Host names with two IP numbers:

dns2.twmail.org points to 2001:b034:201:400:211:72:204:250 and 211.72.204.250

dns.twmail.org points to 2001:b034:1:800:210:59:228:119 and 210.59.228.119

Mail Servers

doubleday.com.tw is handled by two mail servers: ntvirus2.url.com.tw and ntvirus.url.com.tw.

doubleday.com.tw shares the same mail server setup as other domains, for instance mega-chip.com, emedia.tw, shu-me.net, mth.com.tw and go-yes.url.tw.

doubleday.com.tw shares mail servers with other domains at least partially, including erpkc.com, detoti.com, archlife.com, hao-cheng.com.tw and tw-andrews.com.