77.73.243.157
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 (19y) +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 →
DNS records
- Reverse DNS (PTR)
- generic243-157.iwbtelekom.net
- Forward-confirmed (FCrDNS)
- ✗ Mismatch
- PTR TTL
- 21600 s
- Reverse DNS last checked
- 2026-10-06 21:54 UTC
- Forward DNS last checked
- 2026-10-06 21:54 UTC
Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.
Domains hosted
as of 2026-10-04 UTC0
issued.live saw no domain resolving to this IP in its latest weekly snapshot.
Domain data provided by issued.live — for full details visit https://issued.live/pricing
Network Allocation for 77.73.243.157
- CIDR range
- 77.73.240.0/21
- IP range (int)
- 1,296,691,200 — 1,296,693,247
- Prefix length
- /21
- Organization
- IWB Industrielle Werke Basel
- ASN
- AS43284
- ASN name
- IWB Industrielle Werke Basel
- Location
- Basel, Basel City, Switzerland
- Coordinates
- 47.540300, 7.608400
- Accuracy radius
- 5 km
- Postal code
- 4052
- Regional Internet Registry
- RIPE
- Allocated
- 2007-04-02
- Data source(s)
- maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
- Last updated
- 2026-10-06 08:44:51
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 77.73.243.157?
77.73.243.157 is allocated to IWB Industrielle Werke Basel (AS43284), registered in Basel, Switzerland.
Where is 77.73.243.157 located?
The geolocation for 77.73.243.157 maps to Basel, Switzerland 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 77.73.243.157 on?
77.73.243.157 belongs to the 77.73.240.0/21 network block announced by AS43284. This range contains 2,048 addresses.
Does 77.73.243.157 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.
