217.40.192.183
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Long-established allocation (26y) +6
- Not on any threat blocklist +5
- Has a reverse-DNS (PTR) record +5
- Trust score 81 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
Reverse DNS history
How this IP's reverse DNS (PTR) has changed over time, from our scans.
Reverse-DNS changes between Jun 20, 2026 and Sep 28, 2026 were not recorded; the current PTR is shown from its earliest retained observation.
- no PTR — since at least Sep 28, 2026 → present
- host217-40-192-183.in-addr.btopenworld.com stable — Jun 20, 2026 → Sep 28, 2026
Network Allocation for 217.40.192.183
- CIDR range
- 217.40.192.0/22
- IP range (int)
- 3,643,326,464 — 3,643,327,487
- Prefix length
- /22
- Organization
- British Telecommunications PLC
- ASN
- AS2856
- ASN name
- British Telecommunications Limited
- Location
- Catford, England, United Kingdom
- Coordinates
- 51.440200, -0.025900
- Accuracy radius
- 200 km
- Postal code
- SE6
- Regional Internet Registry
- RIPE
- Allocated
- 2000-09-20
- Data source(s)
- maxmind_city, maxmind_asn, ipinfo_lite, maxmind_country
- Last updated
- 2026-09-27 05:26:03
BGP Routing
Live BGP anomalies →Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.
Frequently Asked Questions
Who owns 217.40.192.183?
217.40.192.183 is allocated to British Telecommunications PLC (AS2856), registered in Catford, United Kingdom.
Where is 217.40.192.183 located?
The geolocation for 217.40.192.183 maps to Catford, United Kingdom based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.
What network is 217.40.192.183 on?
217.40.192.183 belongs to the 217.40.192.0/22 network block announced by AS2856. This range contains 1,024 addresses.
Does 217.40.192.183 have a reverse DNS record?
Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.
Neighbors
Other addresses in the same /24.
