156.1.128.136
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 (35y) +6
- Not on any threat blocklist +5
- Trust score 76 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
Network Allocation for 156.1.128.136
- CIDR range
- 156.1.128.0/19
- IP range (int)
- 2,617,344,000 — 2,617,352,191
- Prefix length
- /19
- Organization
- San Francisco Unified School District
- ASN
- AS22226
- ASN name
- San Francisco Unified School District
- Location
- San Francisco, California, United States
- Coordinates
- 37.720100, -122.441400
- Accuracy radius
- 5 km
- Postal code
- 94112
- Regional Internet Registry
- ARIN
- Allocated
- 1991-10-29
- Data source(s)
- maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
- Last updated
- 2026-06-09 06:06:48
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 156.1.128.136?
156.1.128.136 is allocated to San Francisco Unified School District (AS22226), registered in San Francisco, United States.
Where is 156.1.128.136 located?
The geolocation for 156.1.128.136 maps to San Francisco, United States 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 156.1.128.136 on?
156.1.128.136 belongs to the 156.1.128.0/19 network block announced by AS22226. This range contains 8,192 addresses.
Does 156.1.128.136 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.
