{
    "name": "Crawler exclusion nameserver candidates",
    "description": "Nameservers associated with sinkhole or research infrastructure. Useful for crawler-side preflight checks. Verify before use.",
    "source_url": "https://dushansavich.com/tools/crawler-exclusion-lists",
    "last_updated_utc": "2026-06-08 14:36:11 UTC",
    "entry_count": 17,
    "skipped_invalid_entries": 0,
    "entries": [
        {
            "nameserver": "74-208-15-160.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 19:12:47"
        },
        {
            "nameserver": "bs551-02.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 18:57:46"
        },
        {
            "nameserver": "bs551-04.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 18:57:46"
        },
        {
            "nameserver": "de-a.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 18:43:53"
        },
        {
            "nameserver": "de-b.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 18:45:23"
        },
        {
            "nameserver": "ka.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 19:17:32"
        },
        {
            "nameserver": "kb.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 19:17:32"
        },
        {
            "nameserver": "kc.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 19:17:32"
        },
        {
            "nameserver": "kd.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 19:17:32"
        },
        {
            "nameserver": "ns1.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 19:02:58"
        },
        {
            "nameserver": "ns2.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 19:02:58"
        },
        {
            "nameserver": "sc-a.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 18:54:52"
        },
        {
            "nameserver": "sc-b.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 18:54:52"
        },
        {
            "nameserver": "sc-c.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 18:54:52"
        },
        {
            "nameserver": "sc-d.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 18:54:52"
        },
        {
            "nameserver": "sunburst-ns-a.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 19:06:39"
        },
        {
            "nameserver": "sunburst-ns-b.sinkhole.shadowserver.org",
            "dt_added": "2025-11-26 19:06:39"
        }
    ]
}