# WHATPORT(8600)

## NAME

port 8600 — Consul DNS (IANA: asterix) — Consul's DNS interface for service discovery; IANA registered it to EUROCONTROL's ASTERIX.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

The IANA name for 8600 is asterix, EUROCONTROL's "Surveillance Data" format for exchanging radar and other ATM surveillance information, registered in 2005. What you meet on a normal network is Consul: its docs list 8600 as "The DNS server", answering queries like <service>.service.consul over both UDP and TCP. It runs on every Consul agent, so it usually appears next to 8500 on the same host. Because it is a DNS responder on a non-standard port, resolvers reach it only via a forwarding rule.

## EXPOSURE

**Expose with care.** It answers unauthenticated queries that enumerate your internal services and their addresses. Keep it on a private interface and forward to it from your own resolver rather than publishing it.

## CHECK

```sh
dig @TARGET -p 8600 consul.service.consul
```

## SEE ALSO

- docs — [Consul — Required ports](https://developer.hashicorp.com/consul/docs/reference/architecture/ports) (developer.hashicorp.com)
- docs — [EUROCONTROL — ASTERIX surveillance data format](https://www.eurocontrol.int/asterix) (eurocontrol.int)
- iana — [IANA Service Name and Transport Protocol Port Number Registry](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml) (iana.org)

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HTML: <https://whatport.net/8600/> · JSON: <https://whatport.net/8600.json> · full dataset: <https://whatport.net/ports.json>