Censys Inspect

Verifiable

Censys' internet-wide scanner, which probes public IP addresses to build the host/service data behind Censys Search. Censys publishes a fixed set of scanner subnets and ASNs for opt-out purposes.

Operated by Censys · Official documentation

User agents

Patterns this directory matches, with real observed strings.

regexCensysInspect/[\d.]+
observedMozilla/5.0 (compatible; CensysInspect/1.1; +https://about.censys.io/)

How to verify

Look up the announced ranges by ASN

whois -h whois.radb.net -- '-i origin AS398722' | grep route

Documented static ranges: 66.132.159.0/24, 66.132.148.0/24, 66.132.153.0/24, 66.132.224.0/24, 66.132.186.0/24, 66.132.195.0/24, 66.132.172.0/24, 162.142.125.0/24, 167.94.138.0/24, 167.94.145.0/24, 167.94.146.0/24, 167.248.133.0/24, 199.45.154.0/24, 199.45.155.0/24, 206.168.34.0/24, 206.168.35.0/24, 2602:80d:1000:b0cc:e::/80, 2620:96:e000:b0cc:e::/80, 2602:80d:1003::/112, 2602:80d:1004::/112

IP ranges (20)

Refreshed daily from the operator's feed. Also available as /data/ips/censys.ips and /data/bots/censys.json.

162.142.125.0/24
167.248.133.0/24
167.94.138.0/24
167.94.145.0/24
167.94.146.0/24
199.45.154.0/24
199.45.155.0/24
206.168.34.0/24
206.168.35.0/24
2602:80d:1000:b0cc:e::/80
2602:80d:1003::/112
2602:80d:1004::/112
2620:96:e000:b0cc:e::/80
66.132.148.0/24
66.132.153.0/24
66.132.159.0/24
66.132.172.0/24
66.132.186.0/24
66.132.195.0/24
66.132.224.0/24

Good Bot Practices scorecard

Identifies honestly
Stable UA token documented (1 pattern)
Verifiable
Verifiable
Respects robots.txt
Does not honor robots.txt
Behaves
Crawl-rate behavior is operator-declared; not machine-verifiable from this dataset
Reachable operator
Operator and documentation published

Measured against the Good Bot Practices.