engineeringinterview.org - dns.ninja
engineeringinterview.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3033::6815:c74🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:9847🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.12.116Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.152.71🇺🇸 Cloudflare172.67.144.0/20 , 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 | 104.21.12.116, 172.67.152.71 | ||||||
| IPv6 hints | 2606:4700:3033::6815:c74, 2606:4700:3037::ac43:9847 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=192, name=cloudflare-ech.com | ||||||
| SOA | amanda.ns.cloudflare.comdns@cloudflare.com serial=2410973834 | ||||||
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=1785497147 | ||||||
Same first word
engineeringinterview.org |
DNS History
6 records (6 active, 0 former)
●NSamanda.ns.cloudflare.com2026-07-13 → 2026-07-31 · 2 obs
● 2026-07-31 11:59:34
●NSduke.ns.cloudflare.com2026-07-13 → 2026-07-31 · 2 obs
● 2026-07-31 11:59:34
●A104.21.12.1162026-07-13 → 2026-07-31 · 2 obs
● 2026-07-31 11:59:34
●A172.67.152.712026-07-13 → 2026-07-31 · 2 obs
● 2026-07-31 11:59:34
●A2606:4700:3033::6815:c742026-07-13 → 2026-07-31 · 2 obs
● 2026-07-31 11:59:34
●A2606:4700:3037::ac43:98472026-07-13 → 2026-07-31 · 2 obs
● 2026-07-31 11:59:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| engineeringinterview.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 engineeringinterview.org (unsigned zone)
⏱️ Timing
Total: 326ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.152.71, 104.21.12.116 |
| AAAA | 2 | 2606:4700:3037::ac43:9847, 2606:4700:3033::6815:c74 |
| 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
engineeringinterview.org points to the four IP addresses 104.21.12.116, 172.67.152.71, 2606:4700:3033::6815:c74 and 2606:4700:3037::ac43:9847.
Among the host names that share IP numbers with engineeringinterview.org are buyasheep.tw, cian-hosts.com, aclespa.com and two others.
Name Servers
DNS delegation for engineeringinterview.org points to two name servers: amanda.ns.cloudflare.com and duke.ns.cloudflare.com.
engineeringinterview.org has the same name server delegation as a number of other domains, such as analystinterview.org, jix.ca, xn--e1af2aza.xn--p1ai and two more.
The name servers of engineeringinterview.org overlap at least partially with those of other domains — among them uploadtodrive.com, marksupplyco.com, chinabuxiugangmen.com and two more.
These name servers commonly appear alongside the name servers colin.ns.cloudflare.com and martha.ns.cloudflare.com.
Host names resolving to 6 IP numbers:
amanda.ns.cloudflare.com has IP addresses 108.162.192.63, 172.64.32.63 and 173.245.58.63, plus 3 other.
duke.ns.cloudflare.com has IP addresses 108.162.193.110, 172.64.33.110 and 173.245.59.110, plus 3 other.