`cdn.linuxadmin.io`

CNAME	`d1fui1wxe0qhx.cloudfront.net`
DNSSEC	⚠️ Not signed
A	2600:9000:2049:1600:2:842e:940:93a1^{🇺🇸 Amazon2600:9000:2049::/48 - CloudFront}
A	2600:9000:2049:4a00:2:842e:940:93a1^{🇺🇸 Amazon2600:9000:2049::/48 - CloudFront}
A	2600:9000:2049:5600:2:842e:940:93a1^{🇺🇸 Amazon2600:9000:2049::/48 - CloudFront}
A	2600:9000:2049:6800:2:842e:940:93a1^{🇺🇸 Amazon2600:9000:2049::/48 - CloudFront}
A	2600:9000:2049:7400:2:842e:940:93a1^{🇺🇸 Amazon2600:9000:2049::/48 - CloudFront}
A	2600:9000:2049:a600:2:842e:940:93a1^{🇺🇸 Amazon2600:9000:2049::/48 - CloudFront}
A	2600:9000:2049:b200:2:842e:940:93a1^{🇺🇸 Amazon2600:9000:2049::/48 - CloudFront}
A	2600:9000:2049:ca00:2:842e:940:93a1^{🇺🇸 Amazon2600:9000:2049::/48 - CloudFront}
A	13.35.107.16^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
A	13.35.107.31^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
A	13.35.107.105^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
A	13.35.107.108^{🇺🇸 Amazon13.35.107.0/24 -Cloudfront}
NS	`ns-253.awsdns-31.com` ⭐
		A	2600:9000:5300:fd00::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-253.awsdns-31.com`
		A	205.251.192.253^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-253.awsdns-31.com`
NS	`ns-1172.awsdns-18.org`
		A	2600:9000:5304:9400::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1172.awsdns-18.org`
		A	205.251.196.148^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1172.awsdns-18.org`
NS	`ns-1646.awsdns-13.co.uk`
		A	2600:9000:5306:6e00::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1646.awsdns-13.co.uk`
		A	205.251.198.110^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1646.awsdns-13.co.uk`
NS	`ns-776.awsdns-33.net`
		A	2600:9000:5303:800::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-776.awsdns-33.net`
		A	205.251.195.8^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-776.awsdns-33.net`
HTTPS	HTTP/2
SOA	`ns-253.awsdns-31.com`awsdns-hostmaster@amazon.com serial=1

`linuxadmin.io`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:b93f^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:1334^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.19.52^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.185.63^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ingrid.ns.cloudflare.com` ⭐
NS	`pablo.ns.cloudflare.com`
MX	`smtp.secureserver.net` ⭐
MX	`mailstore1.secureserver.net`⁽¹⁰⁾
TXT	`v=spf1 include:sendgrid.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.19.52, 172.67.185.63
		IPv6 hints	2606:4700:3031::ac43:b93f, 2606:4700:3034::6815:1334
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=202, name=cloudflare-ech.com
SOA	`ingrid.ns.cloudflare.com`dns@cloudflare.com serial=2409792347

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DNS History

1 record (1 active, 0 former)

●CNAMEd1fui1wxe0qhx.cloudfront.net2026-03-18 → 2026-07-26 · 2 obs

● 2026-03-18 23:32:00
● 2026-07-26 02:36:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io	-
linuxadmin.io	pablo.ns.cloudflare.com, ingrid.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.165

NS records: pablo.ns.cloudflare.com, ingrid.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for linuxadmin.io (unsigned zone)

⏱️ Timing

Total: 561ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`d1fui1wxe0qhx.cloudfront.net`

Analysis

IP Addresses

cdn.linuxadmin.io directs to 12 IP numbers: 13.35.107.16, 13.35.107.31, 13.35.107.105 and 9 other.

Two other host names, along with studytracker.io, an2-ast.amz.wtchn.net and contrast-law.wetransfer.com, also share IP numbers with cdn.linuxadmin.io.

Name Servers

The NS records for cdn.linuxadmin.io point to four name servers: ns-253.awsdns-31.com, ns-776.awsdns-33.net, ns-1172.awsdns-18.org and ns-1646.awsdns-13.co.uk.

At least some of cdn.linuxadmin.io's name servers are shared with other domains, for example arrocha.net, melodies.mobi, flowcrypt.com and two more.

Four hostnames, each resolving to a pair of IP addresses: ns-253.awsdns-31.com directs to 205.251.192.253 and 2600:9000:5300:fd00::1; ns-776.awsdns-33.net directs to 205.251.195.8 and 2600:9000:5303:800::1; ns-1172.awsdns-18.org directs to 205.251.196.148 and 2600:9000:5304:9400::1; ns-1646.awsdns-13.co.uk directs to 205.251.198.110 and 2600:9000:5306:6e00::1.

cdn.linuxadmin.io - robtex.com