Unclassified
AS40021 NL-811-40021ASN lookup: IP ranges, prefixes and network type
AS40021 is the autonomous system number (ASN) announced by NL-811-40021. It announces 53 prefixes, 125,184 IPv4 addresses in total. Every address inside those ranges is routed by this operator, which is what makes the number the shortest answer to who runs a given address.
Directory data is unavailable at the moment, so the prefix list and the range membership counts are missing from this page. What you can see comes from the committed snapshot and is accurate as far as it goes. Try again shortly.
AS40021 at a glance
| Organisation | NL-811-40021 |
|---|---|
| Autonomous system | AS40021 |
| Network type | UnclassifiedThe registered name carries no indication either way, so nothing is claimed. |
| IPv4 prefixes | Unavailable |
| IPv6 prefixes | Unavailable |
| IPv4 addresses | 125,184Summed across every announced prefix. IPv6 is not counted; the numbers are meaningless at that scale. |
| In known VPN ranges | Unavailable |
| In known datacenter ranges | Unavailable |
Look up an address on AS40021
Paste an address from your own logs. You get the network that announces it, the operator, and the verdict for that specific address.
What AS40021 means for detection
Registry data does not say what kind of network NL-811-40021 runs, and this page will not guess. Ownership alone cannot settle it: the name is the only clue an ASN carries about purpose, and this one carries none. A single address on it can still be classified, because that uses behaviour and range membership rather than the operator's name. Run one below and see what comes back.
The verdict for a single address is never settled by the ASN alone. It is the starting point, and IP Detection adds range membership, behaviour and history on top of it before it answers.
The same page as JSON
No key and no signup. This is the endpoint this page is rendered from, so anything you read here you can script against.
curl https://ipscanner.io/v1/asn/directory/AS40021
IPScanner. AS40021 NL-811-40021, ASN directory. https://ipscanner.io/fr/asn/as40021. Derived from MaxMind GeoLite2.