middle.network
Health check

Saw traffic from us?

middle.network runs network tests that people start by hand from this website, against domains and addresses they type in. If one of our probes reached your network, a person asked for that test. We keep it small, we identify ourselves, and we stop when asked.

How to recognise us

User-Agent
middle.network/0.2 (+https://middle.network/abuse/)
Where from
Microsoft Azure regions listed on our status page. Ping, traceroute and MTR come from fixed addresses; other checks use Azure’s shared outbound addresses for that region.
How often
Each test is capped per person and per target: one host gets at most a few active tests a minute from everyone combined.

What our probes send

  • DNS lookups
    Ordinary queries to public resolvers and to your nameservers, as any resolver would send.
  • Web requests
    One page at a time (HEAD or GET), no form posts, no logins, no crawling beyond a sitemap someone asked us to read.
  • TLS handshakes
    To read your certificate and supported protocol versions. No data is sent after the handshake.
  • Ping and traceroute
    A handful of ICMP or TCP packets per test.
  • Port checks
    At most 20 common service ports per scan (TCP connect only, no payload), and each address at most once a minute from each probe.
  • Mail servers
    An SMTP greeting and STARTTLS only. We never send email.

We don’t run exploit checks, password guessing, vulnerability scans or floods, and we don’t let people test private or internal addresses.

Report a problem or opt out

Email abuse@middle.network with the domains or address ranges, and a time and source address if you have them. We’ll add them to our do-not-test list: after that no ping, port check, web request or traceroute is sent to them from any probe. Lookups that don’t touch your hosts (DNS, WHOIS, spam lists, certificate logs) keep working.

Email abuse@middle.network

For our upstream data sources

We cache answers, keep a daily budget for every free service we use, and back off as soon as one says “slow down”. If our usage bothers you, the same address reaches us.