Addresses
16,384
16.4K
Sub-ranges
4+
within this block
PTR Density
39.2%
6.4K of 16.4K IPs have PTR
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.
82/100
Trusted
How this score is built
- Baseline (neutral) 65
- Academic allocation +6
- Long-established allocation (39y) +6
- Has a reverse-DNS (PTR) record +5
- Trust score 82 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
Ranges inside 128.230.128.0/18
| CIDR | IPs | Organization | ASN | Country |
|---|---|---|---|---|
| 128.230.128.0/20 | 4.1K | Syracuse University | AS11872 | US |
| 128.230.144.0/20 | 4.1K | Syracuse University | AS11872 | US |
| 128.230.160.0/20 | 4.1K | Syracuse University | AS11872 | US |
| 128.230.176.0/20 | 4.1K | Syracuse University | AS11872 | US |
Geolocation
First 256 of 16,384 IP addresses in 128.230.128.0/18
128.230.128.0
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+ 16.1K more (range too large to list inline)
BGP Routing
Live BGP anomalies →This block is announced in BGP, observed across our RIPE RIS collectors.
Announced prefix
Origin AS
Announcement samples
124
Last seen
2026-07-23 09:35:44
Frequently Asked Questions
What is 128.230.128.0/18?
128.230.128.0/18 is a CIDR network block containing 16,384 IPv4 addresses (from 128.230.128.0 to 128.230.191.255). CIDR notation combines an IP address with a prefix length to define a range of addresses.
Who owns the 128.230.128.0/18 network?
The 128.230.128.0/18 range is allocated to Syracuse University and announced via AS11872 from United States.
Last updated: 2026-07-24 18:40:32 UTC
