IANA Blackhole Network

Detection Information

The following page provides details on IP networks and domains used by IANA Blackhole. You can use this information to manage or block IANA Blackhole apps, web access and more.


IANA Blackhole - Logo

Blackhole servers to detect private addresses on the public Internet. Certain addresses (e.g. 192.168.x.x) should never appear on the public internet. If you see this traffic, please investigate DNS on your network. It's always DNS.



External Resources

Manage Bandwidth

Do you know how much IANA Blackhole traffic flows through your network? Netify's application detection engine and reporting provides insights to help manage your network.

What gets measured, gets managed.

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Primary Domains

  • blackhole-1.iana.org
  • blackhole-2.iana.org
  • prisoner.iana.org

Data Feed API

The data shown here is also available via our Netify Informatics API. Please contact us for subscription details.

"data": {
    "tag": "netify.twitter",
    "label": "Twitter",
    "shared_ip_detected": true,
    "category": {
        "id": 24,
        "tag": "social-media",
        "label": "Social Media"
    "network_list": [
            "network": "",
            "version": "ipv4",
            "detection_type": "ai",
            "shared": false,
            "platform": {
                "id": 1002,
                "tag": "akamai",
                "label": "Akamai",
                "category": {
                    "id": 2,
                    "tag": "cdn",
                    "label": "CDN"

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