auth.duca.com - dns.ninja

`auth.duca.com`

CNAME	`d2fdkkmi3tvtkl.cloudfront.net`
DNSSEC	⚠️ Not signed
A	18.238.4.13^{🇺🇸 Amazon18.238.4.0/22}
		PTR	`server-18-238-4-13.phl51.r.cloudfront.net`
A	18.238.4.88^{🇺🇸 Amazon18.238.4.0/22}
A	18.238.4.97^{🇺🇸 Amazon18.238.4.0/22}
A	18.238.4.116^{🇺🇸 Amazon18.238.4.0/22}
NS	`ns-1935.awsdns-49.co.uk` ⭐
		A	2600:9000:5307:8f00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1935.awsdns-49.co.uk`
		A	205.251.199.143^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1935.awsdns-49.co.uk`
NS	`ns-1227.awsdns-25.org`
		A	2600:9000:5304:cb00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1227.awsdns-25.org`
		A	205.251.196.203^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1227.awsdns-25.org`
NS	`ns-504.awsdns-63.com`
		A	2600:9000:5301:f800::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-504.awsdns-63.com`
		A	205.251.193.248^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-504.awsdns-63.com`
NS	`ns-789.awsdns-34.net`
		A	2600:9000:5303:1500::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-789.awsdns-34.net`
		A	205.251.195.21^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-789.awsdns-34.net`
HTTPS	HTTP/2
SOA	`ns-1935.awsdns-49.co.uk`awsdns-hostmaster@amazon.com serial=1

`duca.com`

	DNSSEC	⚠️ Not signed
	A	13.35.107.13^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
	A	13.35.107.14^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
	A	13.35.107.27^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
	A	13.35.107.77^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
	NS	`ns-1924.awsdns-48.co.uk` ⭐
	NS	`ns-1234.awsdns-26.org`
	NS	`ns-504.awsdns-63.com`
	NS	`ns-739.awsdns-28.net`
	MX	`duca-com.mail.protection.outlook.com` ⭐
	TXT	`MS=ms30740006`
	TXT	`apple-domain-verification=hhZHJU1S1FLziGDe`
	TXT	`atlassian-domain-verification=uLEtKgg2esaC4nqQJYRzIeBgS/T8QysyiGST8RJUfANz/EU...`
	TXT	`docusign=63c2f361-64e2-4603-a6f2-7181006f6a5a`
	TXT	`facebook-domain-verification=ko3pefzo098m9tvlwmnu40iagyf6ik`
	TXT	`google-site-verification=RG1wRI19Qo5ek_mHqi6UhxM4NLR0QdWDzk2rbAk4kBQ`
	TXT	`v=spf1 ip4:67.69.107.14 ip4:69.46.98.68 include:spf.protection.outlook.com in...`
	SOA	`ns-1924.awsdns-48.co.uk`awsdns-hostmaster@amazon.com serial=1

WOT: SAFE (61/100)
rank #828128 globally
rank #353826 in the tld
WOT: SAFE (64/100)

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DNS History

1 record (1 active, 0 former)

●CNAMEd2fdkkmi3tvtkl.cloudfront.net2026-07-31 → 2026-07-31 · 2 obs

● 2026-07-31 17:27:20
● 2026-07-31 17:27:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, e.gtld-servers.net, l.gtld-servers.net, b.gtld-servers.net...	-
duca.com	ns-739.awsdns-28.net, ns-504.awsdns-63.com, ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk	2 records
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-
duca.com	ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net	-

✅ Authoritative Response

Server:205.251.199.132

NS records: ns-1234.awsdns-26.org, ns-1924.awsdns-48.co.uk, ns-504.awsdns-63.com, ns-739.awsdns-28.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for duca.com (unsigned zone)

⏱️ Timing

Total: 1909ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`d2fdkkmi3tvtkl.cloudfront.net`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-504.awsdns-63.com, ns-504.awsdns-63.com)

Analysis

IP Addresses

auth.duca.com has four IP addresses: 18.238.4.13, 18.238.4.88, 18.238.4.97 and 18.238.4.116.

amp.digitalstudiome.com, renatohormazabal.com.br, boom-r.jp plus two other host names have IP numbers in common with auth.duca.com.

Name Servers

Four name servers handle the delegation for auth.duca.com: ns-504.awsdns-63.com, ns-789.awsdns-34.net, ns-1227.awsdns-25.org and ns-1935.awsdns-49.co.uk.

auth.duca.com has at least partial name server overlap with other domains, such as bigcountrycrematory.com, honeyinsurance.com, tones.com and two others.

These name servers tend to appear together with the name servers ns-293.awsdns-36.com, ns-1418.awsdns-49.org and ns-1947.awsdns-51.co.uk.

ns-504.awsdns-63.com, ns-789.awsdns-34.net, ns-1227.awsdns-25.org and ns-1935.awsdns-49.co.uk all point to exactly two IP numbers each: ns-504.awsdns-63.com → 205.251.193.248 and 2600:9000:5301:f800::1; ns-789.awsdns-34.net → 205.251.195.21 and 2600:9000:5303:1500::1; ns-1227.awsdns-25.org → 205.251.196.203 and 2600:9000:5304:cb00::1; ns-1935.awsdns-49.co.uk → 205.251.199.143 and 2600:9000:5307:8f00::1.