docs.tw - dns.ninja

`docs.tw`

DNSSEC	🔒 Signed (DS record present)
A	2606:4700:3034::6815:204^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:8073^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.2.4^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.128.115^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`elsa.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a6f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elsa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c06f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`elsa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:206f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`elsa.ns.cloudflare.com`
		A	108.162.192.111^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elsa.ns.cloudflare.com`
		A	172.64.32.111^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elsa.ns.cloudflare.com`
		A	173.245.58.111^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elsa.ns.cloudflare.com`
NS	`henry.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bb0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`henry.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1b0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`henry.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21b0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`henry.ns.cloudflare.com`
		A	108.162.193.176^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`henry.ns.cloudflare.com`
		A	172.64.33.176^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`henry.ns.cloudflare.com`
		A	173.245.59.176^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`henry.ns.cloudflare.com`
MX	`route2.mx.cloudflare.net` ⭐
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
MX	`route3.mx.cloudflare.net`⁽²⁴⁾
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route1.mx.cloudflare.net`⁽⁶⁶⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
TXT	`8a821e9edbed66366cbec8469379a8fff1891ed6`
TXT	`v=spf1 include:_spf.mx.cloudflare.net -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.2.4, 172.67.128.115
		IPv6 hints	2606:4700:3034::6815:204, 2606:4700:3037::ac43:8073
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=87, name=cloudflare-ech.com
SOA	`elsa.ns.cloudflare.com`dns@cloudflare.com serial=2407051629

`tw`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.tw` ⭐
	NS	`anytld.apnic.net` ⚠️ Not in parent delegation
	NS	`b.dns.tw`
	NS	`c.dns.tw`
	NS	`d.dns.tw`
	NS	`e.dns.tw`
	NS	`f.dns.tw`
	NS	`g.dns.tw`
	NS	`h.dns.tw`
	SOA	`a.dns.tw`snw@twnic.net.tw serial=2011024278

🔒 HSTS Preload (+subdomains)

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DNS History

24 records (9 active, 15 former)

●NSelsa.ns.cloudflare.com2015-08-18 → 2026-06-18 · 2 obs

● 2015-08-18 09:31:40
● 2026-06-18 23:36:08

●NShenry.ns.cloudflare.com2015-08-18 → 2026-06-18 · 2 obs

● 2015-08-18 09:31:40
● 2026-06-18 23:36:08

○MXalt1.aspmx.l.google.com2015-08-18 → 2017-09-22 · 4 obs

● 2015-08-18 09:31:40
● 2017-09-22 07:30:58
○ 2026-02-26 20:12:10
○ 2026-06-18 23:36:08

○MXalt2.aspmx.l.google.com2015-08-18 → 2017-09-22 · 4 obs

● 2015-08-18 09:31:40
● 2017-09-22 07:30:58
○ 2026-02-26 20:12:10
○ 2026-06-18 23:36:08

○MXaspmx.l.google.com2015-08-18 → 2017-09-22 · 4 obs

● 2015-08-18 09:31:40
● 2017-09-22 07:30:58
○ 2026-02-26 20:12:10
○ 2026-06-18 23:36:08

○MXaspmx2.googlemail.com2015-08-18 → 2017-09-22 · 4 obs

● 2015-08-18 09:31:40
● 2017-09-22 07:30:58
○ 2026-02-26 20:12:10
○ 2026-06-18 23:36:08

○MXaspmx3.googlemail.com2015-08-18 → 2017-09-22 · 4 obs

● 2015-08-18 09:31:40
● 2017-09-22 07:30:58
○ 2026-02-26 20:12:10
○ 2026-06-18 23:36:08

○MXaspmx4.googlemail.com2015-08-18 → 2017-09-22 · 4 obs

● 2015-08-18 09:31:40
● 2017-09-22 07:30:58
○ 2026-02-26 20:12:10
○ 2026-06-18 23:36:08

○MXaspmx5.googlemail.com2015-08-18 → 2017-09-22 · 4 obs

● 2015-08-18 09:31:40
● 2017-09-22 07:30:58
○ 2026-02-26 20:12:10
○ 2026-06-18 23:36:08

●MXroute1.mx.cloudflare.net2026-02-26 → 2026-06-18 · 3 obs

○ 2017-09-22 07:30:58
● 2026-02-26 20:12:10
● 2026-06-18 23:36:08

●MXroute2.mx.cloudflare.net2026-02-26 → 2026-06-18 · 3 obs

○ 2017-09-22 07:30:58
● 2026-02-26 20:12:10
● 2026-06-18 23:36:08

●MXroute3.mx.cloudflare.net2026-02-26 → 2026-06-18 · 3 obs

○ 2017-09-22 07:30:58
● 2026-02-26 20:12:10
● 2026-06-18 23:36:08

●A104.21.2.42026-02-26 → 2026-06-18 · 13 obs

○ 2017-09-22 08:28:20
● 2026-02-26 20:12:10
● 2026-04-23 11:44:14
○ 2026-04-30 14:17:50
○ 2026-04-30 14:54:38
● 2026-05-01 07:43:36
● 2026-05-01 14:07:26
○ 2026-05-01 17:07:08
● 2026-05-02 13:01:16
● 2026-06-13 01:33:38
○ 2026-06-14 15:01:06
● 2026-06-16 06:41:54
● 2026-06-18 23:36:08

○A104.27.190.1642015-08-18 → 2017-09-22 · 4 obs

● 2015-08-18 09:31:40
● 2017-09-22 07:30:58
○ 2026-02-26 20:12:10
○ 2026-06-18 23:36:08

○A104.27.191.1642015-08-18 → 2017-09-22 · 4 obs

● 2015-08-18 09:31:40
● 2017-09-22 07:30:58
○ 2026-02-26 20:12:10
○ 2026-06-18 23:36:08

●A172.67.128.1152026-02-26 → 2026-06-18 · 13 obs

○A188.114.96.02026-04-30 → 2026-06-14 · 11 obs

○ 2026-04-23 11:44:14
● 2026-04-30 14:17:50
● 2026-04-30 14:54:38
○ 2026-05-01 07:43:36
○ 2026-05-01 14:07:26
● 2026-05-01 17:07:08
○ 2026-05-02 13:01:16
○ 2026-06-13 01:33:38
● 2026-06-14 15:01:06
○ 2026-06-16 06:41:54
○ 2026-06-18 23:36:08

○A188.114.97.02026-04-30 → 2026-06-14 · 11 obs

○A2400:cb00:2048:1::681b:bea42015-08-18 → 2017-09-22 · 4 obs

● 2015-08-18 09:31:40
● 2017-09-22 08:28:20
○ 2026-02-26 20:12:10
○ 2026-06-18 23:36:08

○A2400:cb00:2048:1::681b:bfa42015-08-18 → 2017-09-22 · 4 obs

● 2015-08-18 09:31:40
● 2017-09-22 08:28:20
○ 2026-02-26 20:12:10
○ 2026-06-18 23:36:08

●A2606:4700:3034::6815:2042026-02-26 → 2026-06-18 · 13 obs

●A2606:4700:3037::ac43:80732026-02-26 → 2026-06-18 · 13 obs

○A2a06:98c1:3120::2026-04-30 → 2026-06-14 · 11 obs

○A2a06:98c1:3121::2026-04-30 → 2026-06-14 · 11 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
tw	a.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw...	16 records
docs.tw	henry.ns.cloudflare.com, elsa.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.111

NS records: henry.ns.cloudflare.com, elsa.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1043ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.2.4, 172.67.128.115`
AAAA	2	`2606:4700:3034::6815:204, 2606:4700:3037::ac43:8073`
NS	2	`elsa.ns.cloudflare.com, henry.ns.cloudflare.com`
MX	3	`route2.mx.cloudflare.net (pri: 15), route3.mx.cloudflare.net (pri: 24)...`
TXT	2	`8a821e9edbed66366cbec8469379a8fff1891ed6, v=spf1 include:_spf.mx.cloudflare.net -a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`elsa.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 16

In-bailiwick: 14 (a.dns.tw, a.dns.tw, b.dns.tw...)

Out-of-bailiwick: 2 (anytld.apnic.net, anytld.apnic.net)

Analysis

IP Addresses

docs.tw resolves to four IP addresses: 104.21.2.4, 172.67.128.115, 2606:4700:3034::6815:204 and 2606:4700:3037::ac43:8073.

Two other host names, along with photonics-science.com, yesxby.com and dentaneva.com, also share IP numbers with docs.tw.

Name Servers

Two name servers handle the delegation for docs.tw: elsa.ns.cloudflare.com and henry.ns.cloudflare.com.

docs.tw shares its NS records with other domains, for example best-practice-business.de, hearty.gift, tycaa.org and two others.

docs.tw partially shares its NS delegation with several other domains, including hifiguides.com, vinewisehub.click, ooahs.com and two others.

The name servers zainab.ns.cloudflare.com, jade.ns.cloudflare.com, candy.ns.cloudflare.com and trace.ns.cloudflare.com are often found in use alongside these name servers.

DNS names with 6 IP addresses:

elsa.ns.cloudflare.com resolves to 108.162.192.111, 172.64.32.111 and 173.245.58.111 among others, with 3 other IP addresses in total.

henry.ns.cloudflare.com resolves to 108.162.193.176, 172.64.33.176 and 173.245.59.176 among others, with 3 other IP addresses in total.

Mail Servers

docs.tw uses three mail servers — route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

There is at least a partial MX overlap between docs.tw and other domains, including sharelov.com, lsshermanconsulting.com, thechictribe.com and two others.

DNS names with 6 IP addresses:

route1.mx.cloudflare.net resolves to 162.159.205.11, 162.159.205.12 and 162.159.205.13 among others, with 3 other IP addresses in total.

route2.mx.cloudflare.net resolves to 162.159.205.17, 162.159.205.18 and 162.159.205.19 among others, with 3 other IP addresses in total.

route3.mx.cloudflare.net resolves to 162.159.205.23, 162.159.205.24 and 162.159.205.25 among others, with 3 other IP addresses in total.