gso.nl has both AAAA (IPv6) and A (IPv4) records. While they both appear to be accessible on the network, we have detected that they produce differing results when sent an ACME HTTP validation request. This may indicate that the IPv4 and IPv6 addresses may unintentionally point to different servers, which would cause validation to fail.
[Address Type=IPv4,Server=Microsoft-IIS/8.0,HTTP Status=404] vs [Address Type=IPv6,Server=Apache,HTTP Status=404]
Requests made to the domain
Request to: gso.nl/2a02:2268:ffff:ffff::4, Result: [Address Type=IPv6,Server=Apache,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://gso.nl/.well-known/acme-challenge/letsdebug-test (using initial IP 2a02:2268:ffff:ffff::4)
@0ms: Dialing 2a02:2268:ffff:ffff::4
@151ms: Server response: HTTP 404 Not Found
Request to: gso.nl/95.170.77.135, Result: [Address Type=IPv4,Server=Microsoft-IIS/8.0,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://gso.nl/.well-known/acme-challenge/letsdebug-test (using initial IP 95.170.77.135)
@0ms: Dialing 95.170.77.135
@598ms: Server response: HTTP 404 Not Found
A and AAAA records found for this domain
gso.nl. 0 IN A 95.170.77.135
gso.nl. 0 IN AAAA 2a02:2268:ffff:ffff::4
Challenge update failures for gso.nl in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/13885191
acme: error code 403 "urn:ietf:params:acme:error:unauthorized": Invalid response from http://gso.nl/.well-known/acme-challenge/QR9dWneG2b3fh4ds8dglxycu_RJmRQgqZNx2IoEnhWI: "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n<html><head>\n<title>404 Not Found</title>\n</head><body>\n<h1>Not Found</h1>\n<p"
The IANA public suffix is the TLD of the Registered Domain
The TLD for gso.nl is: nl
1 Certificates contributing to rate limits for this domain
Serial: 342494691444802134740257476662245370137753
NotBefore: 2018-11-19 16:56:46 +0000 UTC
Names: [gso.nl www.gso.nl]
The current status.io status for Let's Encrypt
Operational