structuralengineering.us - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`structuralengineering.us`

DNSSEC	⚠️ Not signed
A	2606:4700:3037::6815:4183^{Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:917f^{Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.65.131^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.145.127^{Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`beth.ns.cloudflare.com` ⭐
NS	`duke.ns.cloudflare.com`
MX	`route2.mx.cloudflare.net` ⭐
MX	`route1.mx.cloudflare.net`⁽⁹⁵⁾
MX	`route3.mx.cloudflare.net`⁽¹⁰⁰⁾
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.65.131, 172.67.145.127
		IPv6 hints	2606:4700:3037::6815:4183, 2606:4700:3037::ac43:917f
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=245, name=cloudflare-ech.com
SOA	`beth.ns.cloudflare.com`dns@cloudflare.com serial=2415802813

`us`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.cctld.us` ⭐
	NS	`b.cctld.us`
	NS	`f.cctld.us`
	NS	`k.cctld.us`
	NS	`m.cctld.us`
	NS	`n.cctld.us`
	NS	`w.cctld.us`
	NS	`x.cctld.us`
	NS	`y.cctld.us`
	SOA	`a.cctld.us`admin@tldns.godaddy serial=1793586983

DNS History

12 records (9 active, 3 former)

●NSbeth.ns.cloudflare.com2026-09-11 → 2026-11-02 · 3 obs

○ 2017-11-27 20:07:50
● 2026-09-11 03:18:08
● 2026-11-02 03:11:54

●NSduke.ns.cloudflare.com2026-09-11 → 2026-11-02 · 3 obs

○ 2017-11-27 20:07:50
● 2026-09-11 03:18:08
● 2026-11-02 03:11:54

○NSns1.uniregistrymarket.link2016-12-31 → 2016-12-31 · 3 obs

● 2016-12-31 07:15:16
○ 2017-11-27 20:07:50
○ 2026-11-02 03:11:54

○NSns2.uniregistrymarket.link2016-12-31 → 2016-12-31 · 3 obs

● 2016-12-31 07:15:16
○ 2017-11-27 20:07:50
○ 2026-11-02 03:11:54

●MXroute1.mx.cloudflare.net2026-09-11 → 2026-11-02 · 2 obs

● 2026-09-11 03:18:08
● 2026-11-02 03:11:54

●MXroute2.mx.cloudflare.net2026-09-11 → 2026-11-02 · 2 obs

● 2026-09-11 03:18:08
● 2026-11-02 03:11:54

●MXroute3.mx.cloudflare.net2026-09-11 → 2026-11-02 · 2 obs

● 2026-09-11 03:18:08
● 2026-11-02 03:11:54

●A104.21.65.1312026-09-11 → 2026-11-02 · 3 obs

○ 2017-11-27 20:07:50
● 2026-09-11 03:18:08
● 2026-11-02 03:11:54

●A172.67.145.1272026-09-11 → 2026-11-02 · 3 obs

○ 2017-11-27 20:07:50
● 2026-09-11 03:18:08
● 2026-11-02 03:11:54

●A2606:4700:3037::6815:41832026-09-11 → 2026-11-02 · 3 obs

○ 2017-11-27 20:07:50
● 2026-09-11 03:18:08
● 2026-11-02 03:11:54

●A2606:4700:3037::ac43:917f2026-09-11 → 2026-11-02 · 3 obs

○ 2017-11-27 20:07:50
● 2026-09-11 03:18:08
● 2026-11-02 03:11:54

○A69.172.201.1532016-12-31 → 2016-12-31 · 3 obs

● 2016-12-31 07:15:16
○ 2017-11-27 20:07:50
○ 2026-11-02 03:11:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
us	m.cctld.us, k.cctld.us, b.cctld.us, x.cctld.us...	-
structuralengineering.us	beth.ns.cloudflare.com, duke.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.103

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

Root DNSKEY fetch failed: Error: connect EADDRNOTAVAIL 198.41.0.4:53 - Local (0.0.0.0:0)

⏱️ Timing

Total: 475ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.65.131, 172.67.145.127`
AAAA	2	`2606:4700:3037::ac43:917f, 2606:4700:3037::6815:4183`
NS	2	`beth.ns.cloudflare.com, duke.ns.cloudflare.com`
MX	3	`route3.mx.cloudflare.net (pri: 100), route2.mx.cloudflare.net (pri: 28)...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`beth.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

structuralengineering.us points to four IP numbers: 104.21.65.131, 172.67.145.127, 2606:4700:3037::6815:4183 and 2606:4700:3037::ac43:917f.

Name Servers

structuralengineering.us uses two name servers for its delegation: beth.ns.cloudflare.com and duke.ns.cloudflare.com.

Mail Servers

structuralengineering.us is handled by three mail servers, route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.