BGP prefixPrefix
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
23.61.96.0/20
Seen by 2,522 peers
Latency
Round trip for an HTTPS request from your browser to the site and back, including the server's reply time.
Live
— ms
Measuring from your browser…
At a glance
Route
From Columbus on Anthropic, PBC
YouColumbus
ndtv.comChicago · — ms
Finding a probe near you…
Networks crossed
Each network is an autonomous system (AS). Your traffic is handed from one to the next where they connect, following
the routes BGP advertises.
AS16509Anthropic, PBC
AS16625Akamai Technologies
#HostNetworkLocationRound trip
AS
⋮
Waiting for a reply——*
Tracing from a probe near you with Globalping. Hop locations that its round-trip times rule out are left off the map.
Email
Protected from spoofing
Mail that fails its checks is rejected under ndtv.com's DMARC policy, so forged mail doesn't reach inboxes.
Receives mail
Microsoft 365
Mail servers
ndtv-com.mail.protection.outlook.com
SPFLists the servers allowed to send mail for the domain. Receivers check it against the sending server.
Soft-fails everything else6 of 10 DNS lookups · includes spf.protection.outlook.com
DMARCTells receivers what to do with mail that fails SPF and DKIM: nothing (none), spam folder (quarantine) or reject.
Rejectsends reports
MTA-STSRequires other mail servers to use encrypted connections (TLS) when delivering to this domain.
Not published
TLS reportsAsks other mail servers to report failed encrypted deliveries (TLS-RPT).
Not requested
BIMIA brand logo that some mail apps show next to authenticated mail from the domain.
The front page answered 403, so only what the response headers and cookies say is shown here.
Built with
Each entry says what gave it away: a response header, a cookie's name, an asset's path or file name, or markup the tool leaves in the page.
Versions are checked against endoflife.date's support schedules and, for JavaScript packages, OSV's vulnerability database, which carries
GitHub's security advisories.
Its bot protection refused heade.rs (403), so agents that fetch pages for people probably get the same answer, and robots.txt couldn't be read either.
Crawlers
robots.txt refused
The site's bot protection answered heade.rs's request for robots.txt (403), so its crawler rules can't be read.
Reading
Without JavaScriptText on the front page before any scripts run: what GPTBot, ClaudeBot, PerplexityBot and most agents read. Google, Bing and Apple's crawlers run scripts.
Page couldn't be read
MarkdownAgents like Claude Code, Cursor and OpenCode ask for Markdown in their Accept header. It's the page without its markup, so it costs them far fewer tokens.
Page couldn't be read
llms.txtA Markdown file listing a site's key pages for AI tools. Coding agents read it; search crawlers mostly don't.
Not published
Structured dataschema.org JSON-LD in the page: facts about the site in a form machines read directly.
Page couldn't be read
Tools
Ways an AI agent can do things on the site, not just read it: an MCP server that apps like Claude, ChatGPT and Cursor connect to, an API
catalog, packaged agent skills, a shopping profile (UCP), or tools the page offers AI in the browser (WebMCP). heade.rs looks in the official
MCP Registry and the files the site publishes under /.well-known/.
Couldn't check: the site didn't answer heade.rs's requests for its agent files.