IANA Blackhole Application

Application Information

The following page provides details on domains, platforms, networks and IPs used by IANA Blackhole.


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.

Category Technology
Web Link IANA Blackhole - Home Page

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Primary Domains

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

IP Details

Other Networks

IP ASN Description ASN Route Location Shared DNS-OARC AS112 United States DNS-OARC AS112 United States

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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