jsdc.tw - dns.ninja

jsdc.tw

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:3ad0🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:a4ab🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.58.208Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.164.171🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScass.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a51🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcass.ns.cloudflare.com
A2803:f800:50::6ca2:c051🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRcass.ns.cloudflare.com
A2a06:98c1:50::ac40:2051🇺🇸 Cloudflare2a06:98c1:50::/45
PTRcass.ns.cloudflare.com
A108.162.192.81🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcass.ns.cloudflare.com
A172.64.32.81🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcass.ns.cloudflare.com
A173.245.58.81🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcass.ns.cloudflare.com
NStom.ns.cloudflare.com
A2606:4700:58::adf5:3b93🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtom.ns.cloudflare.com
A2803:f800:50::6ca2:c193🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRtom.ns.cloudflare.com
A2a06:98c1:50::ac40:2193🇺🇸 Cloudflare2a06:98c1:50::/45
PTRtom.ns.cloudflare.com
A108.162.193.147🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtom.ns.cloudflare.com
A172.64.33.147🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtom.ns.cloudflare.com
A173.245.59.147🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRtom.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c23::1a🇺🇸 Google2607:f8b0:4004::/48
PTRyuiadrs-in-f26.1e100.net
A142.250.31.27🇺🇸 Google142.250.31.0/24
PTRbj-in-f27.1e100.net
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.58.208, 172.67.164.171
IPv6 hints2606:4700:3032::6815:3ad0, 2606:4700:3037::ac43:a4ab
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=111, name=cloudflare-ech.com
SOAcass.ns.cloudflare.comdns@cloudflare.com serial=2411116539

tw

DNSSEC🔒 Signed (DS record present)
NSa.dns.tw ⭐
NSanytld.apnic.net
NSb.dns.tw
NSc.dns.tw
NSd.dns.tw
NSe.dns.tw
NSf.dns.tw
NSg.dns.tw
NSh.dns.tw
SOAa.dns.twsnw@twnic.net.tw 2011-04-30 #9

Subdomains

2014.jsdc.tw

Same first word

jsdc.in
jsdc.net
jsdc.de
jsdc.org
jsdc.tw
jsdc.ag
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jsdc.top
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jsdc.se
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cjsd.blogspot.ug

DNS History

13 records (7 active, 6 former)

20162017201820192020202120222023202420252026NScass.ns.cloudflare.comtom.ns.cloudflare.comlocalhost\@pdns1.pchome.com.twpdns2.pchome.com.twMXaspmx.l.google.comA104.21.58.208172.67.164.1712606:4700:3032::6815:3ad02606:4700:3037::ac43:a4ab192.30.252.153192.30.252.1542606:4700:3033::ac43:a4ab
●NScass.ns.cloudflare.com2026-02-16 → 2026-08-03 · 3 obs
○ 2017-07-03 11:03:38
● 2026-02-16 04:52:54
● 2026-08-03 04:16:06
○NSlocalhost\@2015-08-10 → 2017-07-03 · 4 obs
● 2015-08-10 07:36:34
● 2017-07-03 11:03:38
○ 2026-02-16 04:52:54
○ 2026-08-03 04:16:06
○NSpdns1.pchome.com.tw2015-08-10 → 2017-07-03 · 4 obs
● 2015-08-10 07:36:34
● 2017-07-03 11:03:38
○ 2026-02-16 04:52:54
○ 2026-08-03 04:16:06
○NSpdns2.pchome.com.tw2015-08-10 → 2017-07-03 · 4 obs
● 2015-08-10 07:36:34
● 2017-07-03 11:03:38
○ 2026-02-16 04:52:54
○ 2026-08-03 04:16:06
●NStom.ns.cloudflare.com2026-02-16 → 2026-08-03 · 3 obs
○ 2017-07-03 11:03:38
● 2026-02-16 04:52:54
● 2026-08-03 04:16:06
●MXaspmx.l.google.com2015-08-10 → 2026-08-03 · 2 obs
● 2015-08-10 07:36:34
● 2026-08-03 04:16:06
●A104.21.58.2082026-02-16 → 2026-08-03 · 3 obs
○ 2017-07-03 11:03:38
● 2026-02-16 04:52:54
● 2026-08-03 04:16:06
●A172.67.164.1712026-02-16 → 2026-08-03 · 3 obs
○ 2017-07-03 11:03:38
● 2026-02-16 04:52:54
● 2026-08-03 04:16:06
○A192.30.252.1532015-08-10 → 2017-07-03 · 4 obs
● 2015-08-10 07:36:34
● 2017-07-03 11:03:38
○ 2026-02-16 04:52:54
○ 2026-08-03 04:16:06
○A192.30.252.1542015-08-10 → 2017-07-03 · 4 obs
● 2015-08-10 07:36:34
● 2017-07-03 11:03:38
○ 2026-02-16 04:52:54
○ 2026-08-03 04:16:06
●A2606:4700:3032::6815:3ad02026-02-16 → 2026-08-03 · 3 obs
○ 2017-07-03 11:03:38
● 2026-02-16 04:52:54
● 2026-08-03 04:16:06
○A2606:4700:3033::ac43:a4ab2026-02-16 → 2026-02-16 · 4 obs
○ 2017-07-03 11:03:38
● 2026-02-16 04:52:54
○ 2026-07-09 04:58:28
○ 2026-08-03 04:16:06
●A2606:4700:3037::ac43:a4ab2026-07-09 → 2026-08-03 · 3 obs
○ 2026-02-16 04:52:54
● 2026-07-09 04:58:28
● 2026-08-03 04:16:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
twa.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw...16 records
jsdc.twcass.ns.cloudflare.com, tom.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.192.81

NS records: cass.ns.cloudflare.com, tom.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jsdc.tw (unsigned zone)

⏱️ Timing

Total: 904ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.164.171, 104.21.58.208
AAAA22606:4700:3032::6815:3ad0, 2606:4700:3037::ac43:a4ab
NS2cass.ns.cloudflare.com, tom.ns.cloudflare.com
MX1aspmx.l.google.com (pri: 10)
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1cass.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

Hierarchy

2014.jsdc.tw is a subdomain of jsdc.tw.

IP Addresses

jsdc.tw points to the four IP addresses 104.21.58.208, 172.67.164.171, 2606:4700:3032::6815:3ad0 and 2606:4700:3037::ac43:a4ab.

eastlakenormannews.com, www.ywjxtx.com.cn, ycxtjz.com plus two other host names have IP numbers in common with jsdc.tw.

Name Servers

jsdc.tw has two authoritative name servers — cass.ns.cloudflare.com and tom.ns.cloudflare.com.

The name server configuration of jsdc.tw is shared with other domains, for instance doteveryone.org.uk, fmps.org, safewise.com and two others.

The name servers of jsdc.tw overlap at least partially with those of other domains — among them unbox.be, teriniisgroupco.click, mehrannet.com and two more.

These name servers commonly co-occur with the name servers kia.ns.cloudflare.com, lynn.ns.cloudflare.com, nitin.ns.cloudflare.com and josh.ns.cloudflare.com.

Hosts with 6 IP addresses each:

cass.ns.cloudflare.com points to 108.162.192.81, 172.64.32.81, 173.245.58.81 and 3 other IP addresses.

tom.ns.cloudflare.com points to 108.162.193.147, 172.64.33.147, 173.245.59.147 and 3 other IP addresses.

Mail Servers

jsdc.tw uses one mail server — aspmx.l.google.com.

The mail server setup of jsdc.tw matches that of other domains such as nixfiction.net, ilearnus.com, uspropre.com and two others.

At least some of the mail servers used by jsdc.tw are shared with other domains: teachersworkstation.com, ns500671.ns500731.ns500742.ns500742.ns500688.ns500705.ns500705.ns500649.ns500649.ns500291.ns500131.lustychickser.com, ns500758.ns500758.ns500758.ns500698.ns500735.ns500698.ns500736.ns500735.ns500576.ns500698.ns500708.ns500708.ns500619.ns500652.trackreceptor.com and two others among them.

These mail servers are often deployed together with alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 other mail servers.

aspmx.l.google.com resolves to two IP numbers — 142.250.31.27 and 2607:f8b0:4004:c23::1a.