heade.rs
JSON

Domain

example.com

Hosted by Cloudflare in the United States. Only the country is known, which is common for anycast and CDN addresses.

Location

United States

United States

Country level only

Network Every network on the internet has an autonomous system number (ASN). This is the one that announces this address.

AS13335

Cloudflare

Cloudflare, Inc.

BGP prefix The block of addresses this IP is announced in to the rest of the internet. RPKI valid means the block's owner signed off on the network announcing it.

RPKI valid

172.66.144.0/20

Seen by 3,469 peers

Latency Round trip for an HTTPS request from your browser to the site and back, including the server's reply time.

— ms

Measuring from your browser…

Route

From Columbus on Anthropic, PBC

There's no location for this address, so it can't be drawn on a map.

Tracing the route from a probe near you…

    Details

    Network

    IPv4
    172.66.147.243
    ASNThe autonomous system number of the network that announces this address.
    AS13335
    Operator
    Cloudflare, Inc.
    PrefixThe block of addresses announced over BGP that contains this address.
    172.66.144.0/20
    RPKIWhether a signed record (ROA) authorizes this network to announce this prefix.
    Valid
    VisibilityHow many bgp.tools peers carry this announcement.
    3,469 peers
    Type
    Content
    Registry
    ARIN

    Location

    Country level
    Country
    United StatesUnited States
    Continent
    North America

    Registration

    RDAP
    Registrar
    RESERVED-Internet Assigned Numbers Authority
    Registered
    Aug 14, 199531 years ago
    Expires
    Aug 13, 2027in 10 months
    Updated
    Aug 14, 2026
    StatusRegistry flags on the domain, such as locks that stop unauthorized transfers or changes.
    Delete lockedTransfer lockedUpdate locked
    DNSSECDNSSEC signs DNS answers so they can't be forged on the way to you.
    Signed
    Name servers
    elliott.ns.cloudflare.comhera.ns.cloudflare.com
    Registrant
    Redacted for privacy

    DNS records

    12 records · name servers at Cloudflare · DNSSEC signed

    TypeNameValueTTL
    Aexample.com172.66.147.24339 sec
    Aexample.com104.20.23.15439 sec
    AAAAexample.com2606:4700:10::6814:179a3 min
    AAAAexample.com2606:4700:10::ac42:93f33 min
    NSexample.comhera.ns.cloudflare.com20 hr
    NSexample.comelliott.ns.cloudflare.com20 hr
    MXexample.com0 5 min
    TXTexample.com"v=spf1 -all"5 min
    TXTexample.com"_k2n1y4vw3qtb4skdx9e7dxt97qrmmq9"5 min
    TXT_dmarc.example.com"v=DMARC1;p=reject;sp=reject;adkim=s;aspf=s"5 min
    HTTPSexample.com1 . alpn=h2 ipv4hint=104.20.23.154,172.66.147.243 ipv6hint=2606:4700:10::6814:179a,2606:4700:10::ac42:93f34 min
    DSexample.com2371 13 2 c988ec423e3880eb8dd8a46fe06ca230ee23f35b578d64e78b29c3e1c83d245a1 day

    HTTPS

    https://example.com/

    Certificate

    Valid
    Issuer
    Sectigo
    Issuing CA
    Sectigo Public Server Authentication CA DV E36
    Covers
    *.example.com, example.com
    Issued
    Sep 24, 2026
    Expires
    Dec 21, 2026 · in 2 months
    Lifetime
    88 days
    Also validOther unexpired certificates for this name, found in Certificate Transparency logs.
    8 more certificates

    From Certificate Transparency logs, via Cert Spotter.

    Response headers

    200 OK4 ms from CMH
    HTTP → HTTPSWhether the plain http:// address redirects visitors to the secure one.
    Doesn't redirect
    HTTP/3Advertised through the alt-svc header; browsers switch to it on later requests.
    Not advertised
    accept-ranges
    bytes
    age
    1433
    allow
    GET, HEAD
    cf-cache-status
    HIT
    cf-ray
    a40d19c5ef28224d-CMH
    connection
    close
    content-type
    text/html
    date
    Fri, 25 Sep 2026 21:25:18 GMT
    last-modified
    Tue, 22 Sep 2026 21:15:25 GMT
    server
    cloudflare
    transfer-encoding
    chunked
    Security headers 0 of 6
    • HSTS
    • CSP
    • No sniffing
    • Framing
    • Referrer
    • Permissions