Domain · Tranco #29,332

ck12.org

ck12.org is ranked #29,332 among the world's most-visited sites (Tranco). It resolves to 108.138.64.9, hosted on server-108-138-64-9.iad12.r.cloudfront.net, and presents a TLS certificate issued by Amazon.

HTTP 301

Tranco rank	#29,332
IPv4	108.138.64.9, 108.138.64.75, 108.138.64.12, 108.138.64.110
IPv6	2600:9000:2508:5200:19:965:db40:93a1, 2600:9000:2508:2200:19:965:db40:93a1
Hosting / reverse DNS	server-108-138-64-9.iad12.r.cloudfront.net
Hosting network	AS16509 · AMAZON-02 - Amazon.com, Inc., US
Nameservers	ns-1136.awsdns-14.org, ns-161.awsdns-20.com, ns-1687.awsdns-18.co.uk, ns-977.awsdns-58.net
Mail servers (MX)	aspmx.l.google.com (10), alt2.aspmx.l.google.com (30), alt1.aspmx.l.google.com (30)
HTTP status	301 → https://www.ck12.org/
Web server	AmazonS3
Detected tech	AmazonS3
TLS certificate	Amazon · expires 2026-11-27

Notable DNS TXT records

MS=83D3333E19A93E86CB7555359D6048EE1B9BCFEA
google-site-verification=5I-w_GO6CfZA1FDARhrWTvsloNHQJnWB3WpzO96Q5mI
google-site-verification=E3NQxLaOaxNDjKuRkg4JntlxjO0OkaV7R1i0iMIVMMI
cursor-domain-verification-ew622e=uyKh14stiqt17t91aYjIpgM0E
apple-domain-verification=QF7bv1DM6D2BfMs3
v=spf1 ip4:174.129.252.43 ip4:63.236.100.0/24 ip4:66.77.16.0/24 include:emsd1.com include:amazonses.com include:_spf.google.com include:mail.zendesk.com -all

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FAQ

What is the IP address of ck12.org?

ck12.org resolves to 108.138.64.9, 108.138.64.75, 108.138.64.12 (server-108-138-64-9.iad12.r.cloudfront.net).

Who issued the SSL certificate for ck12.org?

The TLS/SSL certificate for ck12.org was issued by Amazon, valid until 2026-11-27.

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DNS/HTTP/TLS observed 2026-08-06; registration data via RDAP. Informational only. Download JSON · CSV · Browse domains