`cdn.codechef.com`

CNAME	`d3gjrw9ge6kayn.cloudfront.net`
DNSSEC	⚠️ Not signed
A	2600:9000:20ea:1e00:1e:be9c:9fc0:93a1^{🇺🇸 Amazon2600:9000:20ea::/48 - CloudFront}
A	2600:9000:20ea:5200:1e:be9c:9fc0:93a1^{🇺🇸 Amazon2600:9000:20ea::/48 - CloudFront}
A	2600:9000:20ea:5800:1e:be9c:9fc0:93a1^{🇺🇸 Amazon2600:9000:20ea::/48 - CloudFront}
A	2600:9000:20ea:6e00:1e:be9c:9fc0:93a1^{🇺🇸 Amazon2600:9000:20ea::/48 - CloudFront}
A	2600:9000:20ea:7c00:1e:be9c:9fc0:93a1^{🇺🇸 Amazon2600:9000:20ea::/48 - CloudFront}
A	2600:9000:20ea:8c00:1e:be9c:9fc0:93a1^{🇺🇸 Amazon2600:9000:20ea::/48 - CloudFront}
A	2600:9000:20ea:f600:1e:be9c:9fc0:93a1^{🇺🇸 Amazon2600:9000:20ea::/48 - CloudFront}
A	2600:9000:20ea:f800:1e:be9c:9fc0:93a1^{🇺🇸 Amazon2600:9000:20ea::/48 - CloudFront}
A	13.35.78.5^{🇺🇸 Amazon13.35.78.0/23 -Cloudfront}
A	13.35.78.39^{🇺🇸 Amazon13.35.78.0/23 -Cloudfront}
A	13.35.78.73^{🇺🇸 Amazon13.35.78.0/23 -Cloudfront}
A	13.35.78.90^{🇺🇸 Amazon13.35.78.0/23 -Cloudfront}
NS	`ns-526.awsdns-01.net` ⭐
		A	2600:9000:5302:e00::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-526.awsdns-01.net`
		A	205.251.194.14^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-526.awsdns-01.net`
NS	`ns-1478.awsdns-56.org`
		A	2600:9000:5305:c600::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1478.awsdns-56.org`
		A	205.251.197.198^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1478.awsdns-56.org`
NS	`ns-1950.awsdns-51.co.uk`
		A	2600:9000:5307:9e00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1950.awsdns-51.co.uk`
		A	205.251.199.158^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1950.awsdns-51.co.uk`
NS	`ns-499.awsdns-62.com`
		A	2600:9000:5301:f300::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-499.awsdns-62.com`
		A	205.251.193.243^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-499.awsdns-62.com`
HTTPS	HTTP/2
SOA	`ns-526.awsdns-01.net`awsdns-hostmaster@amazon.com serial=1

`codechef.com`

DNSSEC	⚠️ Not signed
A	2606:4700:20::681a:49d^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::681a:59d^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:20::ac43:4b34^{🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.4.157^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.26.5.157^{Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.75.52^{🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`lex.ns.cloudflare.com` ⭐
NS	`vera.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
MX	`alt1.aspmx.l.google.com`⁽²⁰⁾
MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
MX	`aspmx2.googlemail.com`⁽³⁰⁾
MX	`aspmx3.googlemail.com`⁽³⁰⁾
MX	`aspmx4.googlemail.com`⁽³⁰⁾
MX	`aspmx5.googlemail.com`⁽³⁰⁾
TXT	`ahrefs-site-verification_04e642c9c46bc98dafe11b176cc6d5a993ed2012f33afb1ed8af...`
TXT	`ahrefs-site-verification_6e889e2ee688c269d990d481ac87fd8b38f5dc138e8b6e0c14fb...`
TXT	`github-verification=3Vz9HpXqx9n7sDhSFSRP3B3mnz8Hk9FhfXtA6BEZ`
TXT	`google-site-verification=WwEq-x8nLowpMamlJcCxqZF6q_GI65cLfnrBLlMjQ_k`
TXT	`google-site-verification=aofj5h49H6X_5kiZ0iwcqEBsQ292cAjxqXDolg7zO_Y`
TXT	`google-site-verification=c1sCqtaSYtvVbMlr-FHZR0M-TNm4455mXnp6BNqRuWI`
TXT	`v=spf1 +a +mx a:webserver.codechef.com include:amazonses.com include:_spf.goo...`
TXT	`zoho-verification=zb09737561.zmverify.zoho.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.26.4.157, 104.26.5.157, 172.67.75.52
		IPv6 hints	2606:4700:20::681a:49d, 2606:4700:20::681a:59d, 2606:4700:20::ac43:4b34
SOA	`lex.ns.cloudflare.com`dns@cloudflare.com serial=2411395849

WOT: SAFE (93/100)
rank #20616 globally
rank #10095 in the tld
WOT: SAFE (93/100)
📈 Tranco rank: #34,738

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DNS History

1 record (1 active, 0 former)

●CNAMEd3gjrw9ge6kayn.cloudfront.net2026-04-08 → 2026-08-10 · 2 obs

● 2026-04-08 12:39:06
● 2026-08-10 19:28:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
codechef.com	vera.ns.cloudflare.com, lex.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.147

NS records: vera.ns.cloudflare.com, lex.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for codechef.com (unsigned zone)

⏱️ Timing

Total: 801ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`d3gjrw9ge6kayn.cloudfront.net`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (vera.ns.cloudflare.com, vera.ns.cloudflare.com, vera.ns.cloudflare.com...)

Analysis

IP Addresses

cdn.codechef.com directs to 12 IP numbers: 13.35.78.5, 13.35.78.39, 13.35.78.73 and 9 other.

Two other host names, along with d36l2d1r3um3ng.cloudfront.net, continuity.datto.com and caryherwigwriter.com, also share IP numbers with cdn.codechef.com.

Name Servers

The NS records for cdn.codechef.com point to four name servers: ns-499.awsdns-62.com, ns-526.awsdns-01.net, ns-1478.awsdns-56.org and ns-1950.awsdns-51.co.uk.

There is at least partial name server overlap between cdn.codechef.com and other domains — findel-education.com, ym152.com, blizzardall-stars.es and two more among them.

All four hostnames — ns-499.awsdns-62.com, ns-526.awsdns-01.net, ns-1478.awsdns-56.org and ns-1950.awsdns-51.co.uk — resolve to two IP numbers apiece: ns-499.awsdns-62.com to 205.251.193.243 and 2600:9000:5301:f300::1; ns-526.awsdns-01.net to 205.251.194.14 and 2600:9000:5302:e00::1; ns-1478.awsdns-56.org to 205.251.197.198 and 2600:9000:5305:c600::1; ns-1950.awsdns-51.co.uk to 205.251.199.158 and 2600:9000:5307:9e00::1.

cdn.codechef.com - dns.ninja

cdn.codechef.com

codechef.com