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Attack surface discovery

Find everything you expose, before anyone else does.

From one domain, xSpctr maps the names, addresses, services and certificates that belong to you, and keeps the map current every day.

DiscoveryRunning
example.com mail.vpn.shop.api-dev. 203.0.113.10 :25203.0.113.10 :443198.51.100.7 :443192.0.2.44 :443192.0.2.44 :80192.0.2.90 :3389
4 names · 5 addresses · 6 servicesfrom one domain

What xSpctr finds

Your surface, asset by asset.

Domains and subdomains

Names from certificate logs, DNS and public sources, including forgotten test hosts.

Addresses and network blocks

The addresses your names resolve to and the network blocks registered to you.

Services and ports

What answers on each address: web, mail, VPN, remote access, databases and more.

Certificates

Every certificate issued for your names, with its issuer and expiry, so nothing lapses by surprise.

Web technologies

The software behind each site and service, with versions where they can be read.

Hosting and location

Where each host runs and who operates its network, to tell yours from a supplier’s.

Inventory

Every host, with context.

The inventory lists everything in scope, checked daily. Sort by risk, filter by country, network or port, and add the owner and notes only you know.

  • Sort by highest CVSS, open ports or known-exploited matches
  • Filter by origin, country, network and port
  • Export what you see for your own tools
xSpctr · Assets
Asset inventory

Scope control

Only what is yours, and why.

Every asset carries the reason it is in scope: a verified domain, a name that resolves to it, or a network you registered. You stay in control of what is tested.

  • Domains are verified with a single DNS TXT record
  • Network ranges are approved before they are monitored
  • Each host shows exactly why it belongs to you
xSpctr · Host
Host detail with the reason it is in scope

Questions

Discovery, explained

Where does the discovery data come from?

Certificate transparency logs, DNS, regional internet registries and internet-wide scan data, combined with light checks of the hosts you have verified.

How often is the inventory updated?

Every day. New names, addresses and services appear in the inventory and, if they matter, in your alerts.

Can xSpctr find assets that do not use my main domain?

Yes, when they are linked to it: shared certificates, network blocks registered to you, or names that resolve to your addresses. You can also add further domains to your scope.

Find out what you expose. Start with one domain.

Tell us about your organisation and we will set you up.