coursework.app - dns.ninja

coursework.app

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:990a🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:2891🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.40.145Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.153.10🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSajay.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b38🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRajay.ns.cloudflare.com
A2803:f800:50::6ca2:c138🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRajay.ns.cloudflare.com
A2a06:98c1:50::ac40:2138🇺🇸 Cloudflare2a06:98c1:50::/45
PTRajay.ns.cloudflare.com
A108.162.193.56🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRajay.ns.cloudflare.com
A172.64.33.56🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRajay.ns.cloudflare.com
A173.245.59.56🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRajay.ns.cloudflare.com
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
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.40.145, 172.67.153.10
IPv6 hints2606:4700:3030::ac43:990a, 2606:4700:3036::6815:2891
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=147, name=cloudflare-ech.com
SOAajay.ns.cloudflare.comdns@cloudflare.com serial=2411326597

app

DNSSEC🔒 Signed (DS record present)
NSns-tld1.charlestonroadregistry.com ⭐
NSns-tld2.charlestonroadregistry.com
NSns-tld3.charlestonroadregistry.com
NSns-tld4.charlestonroadregistry.com
NSns-tld5.charlestonroadregistry.com
SOAns-tld1.charlestonroadregistry.comcloud-dns-hostmaster@google.com serial=101427
🔒 HSTS Preload (+subdomains)

Same first word

coursework.co
coursework.de
coursework.info
coursework.co.uk
coursework.net
coursework.com
coursework.app

Similar names

workcourse.com
sucoworker.cz
worksource.net
worksource.co
worksource.io
cuoreworks.com
worksource.com
coeurworks.xyz
sourcework.com
sourcework.nl
worksource.de
workcourse.de

DNS History

8 records (6 active, 2 former)

NSajay.ns.cloudflare.comlisa.ns.cloudflare.comA104.21.40.145172.67.153.102606:4700:3030::ac43:990a2606:4700:3036::6815:28912606:4700:3031::6815:28912606:4700:3035::ac43:990a
●NSajay.ns.cloudflare.com2026-02-16 → 2026-08-07 · 2 obs
● 2026-02-16 07:35:56
● 2026-08-07 16:35:00
●NSlisa.ns.cloudflare.com2026-02-16 → 2026-08-07 · 2 obs
● 2026-02-16 07:35:56
● 2026-08-07 16:35:00
●A104.21.40.1452026-02-16 → 2026-08-07 · 2 obs
● 2026-02-16 07:35:56
● 2026-08-07 16:35:00
●A172.67.153.102026-02-16 → 2026-08-07 · 2 obs
● 2026-02-16 07:35:56
● 2026-08-07 16:35:00
●A2606:4700:3030::ac43:990a2026-07-05 → 2026-08-07 · 3 obs
○ 2026-06-12 22:36:00
● 2026-07-05 00:37:24
● 2026-08-07 16:35:00
○A2606:4700:3031::6815:28912026-02-16 → 2026-06-12 · 4 obs
● 2026-02-16 07:35:56
● 2026-06-12 22:36:00
○ 2026-07-05 00:37:24
○ 2026-08-07 16:35:00
○A2606:4700:3035::ac43:990a2026-02-16 → 2026-06-12 · 4 obs
● 2026-02-16 07:35:56
● 2026-06-12 22:36:00
○ 2026-07-05 00:37:24
○ 2026-08-07 16:35:00
●A2606:4700:3036::6815:28912026-07-05 → 2026-08-07 · 3 obs
○ 2026-06-12 22:36:00
● 2026-07-05 00:37:24
● 2026-08-07 16:35:00

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
appns-tld2.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com...-
coursework.appajay.ns.cloudflare.com, lisa.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.33.56

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coursework.app (unsigned zone)

⏱️ Timing

Total: 651ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.40.145, 172.67.153.10
AAAA22606:4700:3036::6815:2891, 2606:4700:3030::ac43:990a
NS2ajay.ns.cloudflare.com, lisa.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1ajay.ns.cloudflare.com dns.cloudflare.co

Analysis

IP Addresses

coursework.app has four IP addresses: 104.21.40.145, 172.67.153.10, 2606:4700:3030::ac43:990a and 2606:4700:3036::6815:2891.

Two other host names, along with cansionpesca.com, 8f35.com and 5mb.co.id, also share IP numbers with coursework.app.

Name Servers

The NS records for coursework.app delegate to ajay.ns.cloudflare.com and lisa.ns.cloudflare.com.

coursework.app shares its NS records with other domains, for example stevepratley.com, marketingautomationguide.com, ppgames.net and two others.

coursework.app has at least partial name server overlap with other domains, such as thereformedinvestor.com, zodowuvonoperations.sbs, bulantogel.club and two others.

These name servers tend to appear together with the name servers paityn.ns.cloudflare.com, olivia.ns.cloudflare.com and ken.ns.cloudflare.com.

DNS names with 6 IP addresses:

ajay.ns.cloudflare.com maps to 108.162.193.56, 172.64.33.56, 173.245.59.56 and 3 additional IP addresses.

lisa.ns.cloudflare.com maps to 108.162.192.131, 172.64.32.131, 173.245.58.131 and 3 additional IP addresses.