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opentelemetry.io

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

Security headers: B 83/100 (rank #44 of 461) · TLS: TLSv1.3 · Cert expires in 89 days (rank #294 of 459 soonest) · Response: 136.1 ms (rank #175 of 446)
Certificate valid for 89 more days (until Jan 29 16:56:56 2027 GMT).

TLS certificate

FieldValue
IssuerLet's Encrypt
Subject CN*.opentelemetry.io
Valid untilJan 29 16:56:56 2027 GMT
Days left89
TLS versionTLSv1.3
SAN entries2

Security headers (83/100, grade B)

HeaderStatus
strict-transport-securitymax-age=31536000
content-security-policyframe-ancestors 'self';
x-frame-optionsSAMEORIGIN
x-content-type-optionsnosniff
referrer-policystrict-origin-when-cross-origin
permissions-policymissing

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response136.1 ms
Fastest / slowest76.0 / 188.9 ms
HTTP status200 (https)
ServerNetlify

DNS & robots.txt

FieldValue
A records3.33.186.135, 15.197.167.90
Nameserversdns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net
MX records2
robots.txtpresent (0 sitemap refs, 0 disallow rules)

How opentelemetry.io compares

SiteHeadersScoreCert days leftms
docker.comB835683.6
ansible.comB83511193.1
datadoghq.comB83144150.6
puppet.comC6751113.7
chef.ioC676299.4
jenkins.ioC5072287.7
circleci.comC5095170.2
terraform.ioD3381283.7

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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.