`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	104.21.12.116^{Cloudflare104.21.0.0/20 , 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=187, name=cloudflare-ech.com
SOA	`amanda.ns.cloudflare.com`dns@cloudflare.com serial=2410986168

`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.info`hostmaster@donuts.email serial=1786075197

Same first word

engineeringinterview.org

DNS History

6 records (6 active, 0 former)

●NSamanda.ns.cloudflare.com2026-07-13 → 2026-08-07 · 2 obs

● 2026-07-13 11:26:40
● 2026-08-07 04:34:56

●NSduke.ns.cloudflare.com2026-07-13 → 2026-08-07 · 2 obs

● 2026-07-13 11:26:40
● 2026-08-07 04:34:56

●A104.21.12.1162026-07-13 → 2026-08-07 · 2 obs

● 2026-07-13 11:26:40
● 2026-08-07 04:34:56

●A172.67.152.712026-07-13 → 2026-08-07 · 2 obs

● 2026-07-13 11:26:40
● 2026-08-07 04:34:56

●A2606:4700:3033::6815:c742026-07-13 → 2026-08-07 · 2 obs

● 2026-07-13 11:26:40
● 2026-08-07 04:34:56

●A2606:4700:3037::ac43:98472026-07-13 → 2026-08-07 · 2 obs

● 2026-07-13 11:26:40
● 2026-08-07 04:34:56

🔍 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	amanda.ns.cloudflare.com, duke.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.110

NS records: amanda.ns.cloudflare.com, duke.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for engineeringinterview.org (unsigned zone)

⏱️ Timing

Total: 479ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.12.116, 172.67.152.71`
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 has four IP addresses: 104.21.12.116, 172.67.152.71, 2606:4700:3033::6815:c74 and 2606:4700:3037::ac43:9847.

buyasheep.tw, ovo88n.com, cian-hosts.com plus two other host names have IP numbers in common with engineeringinterview.org.

Name Servers

The NS records for engineeringinterview.org delegate to amanda.ns.cloudflare.com and duke.ns.cloudflare.com.

The name server configuration of engineeringinterview.org is shared with other domains, for instance analystinterview.org, jix.ca, xn--e1af2aza.xn--p1ai and two others.

engineeringinterview.org shares at least some of its name servers with other domains, including uploadtodrive.com, marksupplyco.com, chinabuxiugangmen.com and two others.

These name servers are frequently paired with the name servers colin.ns.cloudflare.com and martha.ns.cloudflare.com.

Hosts with 6 IP addresses each:

amanda.ns.cloudflare.com maps to 108.162.192.63, 172.64.32.63, 173.245.58.63 and 3 additional IP addresses.

duke.ns.cloudflare.com maps to 108.162.193.110, 172.64.33.110, 173.245.59.110 and 3 additional IP addresses.

engineeringinterview.org - robtex.com