Reachable 
LINK 4
Participants served
3,682
0.05% of the network · counted, not estimated
Countries served
4
across all 3,682 of their participants
Uptime
100.0%
over 6 hourly checks
Where their participants are
Every participant they publish, split by the national agency each one registered with.
-
Australia 100%
-
Belgium 0.37%
-
United Kingdom 0.09%
-
Netherlands 0.03%
Infrastructure
The publisher itself, and the access points it routes documents to. Access points are read from its published metadata; we do not contact them.
- Service Metadata Publisher
- peppol.link4.cloud
- Peppol id
- PSG000308
- Registered in
- Singapore
- Last response
- 597 ms
- TLS
- TLSv1.3 · Sectigo Limited
- Certificate valid to
- 24 October 2026
- Access point
- LINK 4 · https://peppol.link4.cloud/as4/receiver/v1
Reaching them is not the hard part
Invopop builds each document to its destination country's rules, signs it, and routes it over Peppol, whichever provider is on the other end.