codinginterviewprep.org - dns.ninja
codinginterviewprep.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3033::6815:450d🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:ca93🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.69.13Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.202.147🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | amanda.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3a3f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | amanda.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c03f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | amanda.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:203f🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | amanda.ns.cloudflare.com | ||||||
| A | 108.162.192.63🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | amanda.ns.cloudflare.com | ||||||
| A | 172.64.32.63🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | amanda.ns.cloudflare.com | ||||||
| A | 173.245.58.63🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | amanda.ns.cloudflare.com | ||||||
| NS | duke.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3b6e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | duke.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c16e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | duke.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:216e🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | duke.ns.cloudflare.com | ||||||
| A | 108.162.193.110🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | duke.ns.cloudflare.com | ||||||
| A | 172.64.33.110🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | duke.ns.cloudflare.com | ||||||
| A | 173.245.59.110🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | duke.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.69.13, 172.67.202.147 | ||||||
| IPv6 hints | 2606:4700:3033::6815:450d, 2606:4700:3037::ac43:ca93 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=22, name=cloudflare-ech.com | ||||||
| SOA | amanda.ns.cloudflare.comdns@cloudflare.com serial=2411887167 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1787944708 | ||||||
Same first word
codinginterviewprep.org |
Previous names
Next names
DNS History
6 records (6 active, 0 former)
●NSamanda.ns.cloudflare.com2026-08-25 → 2026-08-28 · 2 obs
● 2026-08-28 20:24:18
●NSduke.ns.cloudflare.com2026-08-25 → 2026-08-28 · 2 obs
● 2026-08-28 20:24:18
●A104.21.69.132026-08-25 → 2026-08-28 · 2 obs
● 2026-08-28 20:24:18
●A172.67.202.1472026-08-25 → 2026-08-28 · 2 obs
● 2026-08-28 20:24:18
●A2606:4700:3033::6815:450d2026-08-25 → 2026-08-28 · 2 obs
● 2026-08-28 20:24:18
●A2606:4700:3037::ac43:ca932026-08-25 → 2026-08-28 · 2 obs
● 2026-08-28 20:24:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| codinginterviewprep.org | duke.ns.cloudflare.com, amanda.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.193.110
NS records: duke.ns.cloudflare.com, amanda.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for codinginterviewprep.org (unsigned zone)
⏱️ Timing
Total: 573ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.69.13, 172.67.202.147 |
| AAAA | 2 | 2606:4700:3033::6815:450d, 2606:4700:3037::ac43:ca93 |
| NS | 2 | amanda.ns.cloudflare.com, duke.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | amanda.ns.cloudflare.com dns.cloudflare. |
Analysis
IP Addresses
codinginterviewprep.org points to the four IP addresses 104.21.69.13, 172.67.202.147, 2606:4700:3033::6815:450d and 2606:4700:3037::ac43:ca93.
Additional host names — www.shaba-sports.cc, u.scvkdracingocean3.blogcindario.com, shoptions.net and two others — share IP numbers with codinginterviewprep.org.
Name Servers
codinginterviewprep.org is served by two delegated name servers, amanda.ns.cloudflare.com and duke.ns.cloudflare.com.
codinginterviewprep.org shares its name server setup with other domains, including tonasco.com, petal-marble-chime.pages.dev, heremaia.com.au and two others.
The name servers of codinginterviewprep.org overlap at least partially with those of other domains — among them myraproperties.ae, westernunionalumni.com, privatefamilygroupllc.com and two more.
These name servers commonly appear alongside the name servers andy.ns.cloudflare.com and huxley.ns.cloudflare.com.
Host names with 6 IP numbers:
amanda.ns.cloudflare.com carries IP addresses 108.162.192.63, 172.64.32.63 and 173.245.58.63, with 3 other addresses beyond those.
duke.ns.cloudflare.com carries IP addresses 108.162.193.110, 172.64.33.110 and 173.245.59.110, with 3 other addresses beyond those.