zdstudy.com - dns.ninja

zdstudy.com

DNSSEC⚠️ Not signed
A2606:4700:3035::ac43:d68f🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:3b34🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.59.52Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.214.143🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSlisa.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a83🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlisa.ns.cloudflare.com
A2803:f800:50::6ca2:c083🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRlisa.ns.cloudflare.com
A2a06:98c1:50::ac40:2083🇺🇸 Cloudflare2a06:98c1:50::/45
PTRlisa.ns.cloudflare.com
A108.162.192.131🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlisa.ns.cloudflare.com
A172.64.32.131🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlisa.ns.cloudflare.com
A173.245.58.131🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRlisa.ns.cloudflare.com
NSmax.ns.cloudflare.com
A2606:4700:58::adf5:3b84🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmax.ns.cloudflare.com
A2803:f800:50::6ca2:c184🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRmax.ns.cloudflare.com
A2a06:98c1:50::ac40:2184🇺🇸 Cloudflare2a06:98c1:50::/45
PTRmax.ns.cloudflare.com
A108.162.193.132🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmax.ns.cloudflare.com
A172.64.33.132🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmax.ns.cloudflare.com
A173.245.59.132🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmax.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.59.52, 172.67.214.143
IPv6 hints2606:4700:3035::ac43:d68f, 2606:4700:3037::6815:3b34
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=238, name=cloudflare-ech.com
SOAlisa.ns.cloudflare.comdns@cloudflare.com serial=2405982115

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1782656140

Same first word

zdstudy.com

Similar names

dzstudy.com
studyzd.cn

DNS History

16 records (6 active, 10 former)

2017201820192020202120222023202420252026NSlisa.ns.cloudflare.commax.ns.cloudflare.coma.share-dns.comb.share-dns.netmain2.ns365.netns5.gzidc.comns6.gzidc.comA104.21.59.52172.67.214.1432606:4700:3035::ac43:d68f2606:4700:3037::6815:3b34124.172.139.33188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::
○NSa.share-dns.com2026-04-07 → 2026-06-28 · 2 obs
○ 2026-04-07 19:32:40
○ 2026-06-28 14:31:10
○NSb.share-dns.net2026-04-07 → 2026-06-28 · 2 obs
○ 2026-04-07 19:32:40
○ 2026-06-28 14:31:10
●NSlisa.ns.cloudflare.com2026-04-07 → 2026-06-28 · 3 obs
○ 2016-12-17 01:16:32
● 2026-04-07 19:32:40
● 2026-06-28 14:31:10
○NSmain2.ns365.net2016-12-17 → 2016-12-17 · 3 obs
● 2016-12-17 01:16:32
○ 2026-04-07 19:32:40
○ 2026-06-28 14:31:10
●NSmax.ns.cloudflare.com2026-04-07 → 2026-06-28 · 3 obs
○ 2016-12-17 01:16:32
● 2026-04-07 19:32:40
● 2026-06-28 14:31:10
○NSns5.gzidc.com2016-12-17 → 2016-12-17 · 3 obs
● 2016-12-17 01:16:32
○ 2026-04-07 19:32:40
○ 2026-06-28 14:31:10
○NSns6.gzidc.com2016-12-17 → 2016-12-17 · 3 obs
● 2016-12-17 01:16:32
○ 2026-04-07 19:32:40
○ 2026-06-28 14:31:10
●A104.21.59.522026-04-07 → 2026-06-28 · 4 obs
○ 2016-12-17 01:16:32
● 2026-04-07 19:32:40
○ 2026-04-30 19:25:48
● 2026-06-28 14:31:10
○A124.172.139.332016-12-17 → 2016-12-17 · 3 obs
● 2016-12-17 01:16:32
○ 2026-04-07 19:32:40
○ 2026-06-28 14:31:10
●A172.67.214.1432026-04-07 → 2026-06-28 · 4 obs
○ 2016-12-17 01:16:32
● 2026-04-07 19:32:40
○ 2026-04-30 19:25:48
● 2026-06-28 14:31:10
○A188.114.96.02026-04-30 → 2026-04-30 · 3 obs
○ 2026-04-07 19:32:40
● 2026-04-30 19:25:48
○ 2026-06-28 14:31:10
○A188.114.97.02026-04-30 → 2026-04-30 · 3 obs
○ 2026-04-07 19:32:40
● 2026-04-30 19:25:48
○ 2026-06-28 14:31:10
●A2606:4700:3035::ac43:d68f2026-04-07 → 2026-06-28 · 4 obs
○ 2016-12-17 01:16:32
● 2026-04-07 19:32:40
○ 2026-04-30 19:25:48
● 2026-06-28 14:31:10
●A2606:4700:3037::6815:3b342026-04-07 → 2026-06-28 · 4 obs
○ 2016-12-17 01:16:32
● 2026-04-07 19:32:40
○ 2026-04-30 19:25:48
● 2026-06-28 14:31:10
○A2a06:98c1:3120::2026-04-30 → 2026-04-30 · 3 obs
○ 2026-04-07 19:32:40
● 2026-04-30 19:25:48
○ 2026-06-28 14:31:10
○A2a06:98c1:3121::2026-04-30 → 2026-04-30 · 3 obs
○ 2026-04-07 19:32:40
● 2026-04-30 19:25:48
○ 2026-06-28 14:31:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comd.gtld-servers.net, i.gtld-servers.net, g.gtld-servers.net, c.gtld-servers.net...-
zdstudy.comlisa.ns.cloudflare.com, max.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.132

NS records: lisa.ns.cloudflare.com, max.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for zdstudy.com (unsigned zone)

⏱️ Timing

Total: 181ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.59.52, 172.67.214.143
AAAA22606:4700:3037::6815:3b34, 2606:4700:3035::ac43:d68f
NS2lisa.ns.cloudflare.com, max.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1lisa.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (lisa.ns.cloudflare.com, lisa.ns.cloudflare.com, lisa.ns.cloudflare.com...)

Analysis

IP Addresses

zdstudy.com has four IP addresses: 104.21.59.52, 172.67.214.143, 2606:4700:3035::ac43:d68f and 2606:4700:3037::6815:3b34.

Two other host names, along with orthometrics.com, palette-pellets.be and hookerdeerdrag.com, also share IP numbers with zdstudy.com.

Name Servers

zdstudy.com uses two name servers for its delegation: lisa.ns.cloudflare.com and max.ns.cloudflare.com.

zdstudy.com shares its NS records with other domains, for example xdad56.com, kurand.com, irvbriscoe.com and two others.

zdstudy.com has at least partial name server overlap with other domains, such as ln-wrgd.com, californiapartnership.org, quickstartguides.com and two others.

It is common to find these name servers paired with the name servers ken.ns.cloudflare.com.

DNS names with 6 IP addresses:

Hostname lisa.ns.cloudflare.com directs to 108.162.192.131, 172.64.32.131 and 173.245.58.131 along with 3 other IP addresses.

Hostname max.ns.cloudflare.com directs to 108.162.193.132, 172.64.33.132 and 173.245.59.132 along with 3 other IP addresses.