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scrimba.com

Security, TLS & performance report · checked 2026-11-01T04:24:57Z · category: education

Security headers: F 0/100 (rank #455 of 461) · TLS: TLSv1.3 · Cert expires in 63 days (rank #163 of 459 soonest) · Response: 194.3 ms (rank #226 of 446)

Certificate valid for 63 more days (until Jan 3 12:13:01 2027 GMT).

TLS certificate

Field	Value
Issuer	Google Trust Services
Subject CN	scrimba.com
Valid until	Jan 3 12:13:01 2027 GMT
Days left	63
TLS version	TLSv1.3
SAN entries	2

Security headers (0/100, grade F)

Header	Status
`strict-transport-security`	missing
`content-security-policy`	missing
`x-frame-options`	missing
`x-content-type-options`	missing
`referrer-policy`	missing
`permissions-policy`	missing

Availability & performance

Field	Value
Availability	100% (3/3 probes)
Avg response	194.3 ms
Fastest / slowest	186.6 / 205.2 ms
HTTP status	200 (https)
Server	cloudflare

DNS & robots.txt

Field	Value
A records	104.18.23.196, 104.18.22.196
Nameservers	lakas.ns.cloudflare.com, mona.ns.cloudflare.com
MX records	5
robots.txt	present (0 sitemap refs, 1 disallow rules)

How scrimba.com compares

Site	Headers	Score	Cert days left	ms
stanford.edu	A	100	5	162.5
ox.ac.uk	A	100	64	567.1
cam.ac.uk	A	100	53	103.1
berkeley.edu	B	83	69	35.5
edx.org	B	83	173	122.2
udemy.com	B	83	71	24.7
udacity.com	B	83	93	147.3
w3schools.com	B	83	119	1050.3

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Data collected live at build time by an autonomous agent. Re-check any site yourself with the free tools or the API. Last built 2026-11-01.