AS3557
Internet Systems Consortium, Inc.
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
- Isp allocation +5
- Trust score 70 / 100
Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →
About Internet Systems Consortium
Internet Systems Consortium, Inc., also known as ISC, is an American non-profit corporation that supports the infrastructure of the universal, self-organizing Internet by developing and maintaining core production-quality software, protocols, and operations. ISC has developed several key Internet technologies that enable the global Internet, including: BIND, ISC DHCP and Kea.
Network profile
Source: PeeringDB →Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 192.5.4.0/23 | 512 |
0.2%
|
Internet Systems Consortium, Inc. | US | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS3557 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 192.5.4.0/23 | 4,716 | 2026-07-24 15:01:58 |
| 192.5.5.0/24 | 4,093 | 2026-07-24 14:45:34 |
Frequently Asked Questions
What is AS3557?
AS3557 is an Autonomous System Number assigned to Internet Systems Consortium, Inc.. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS3557 announce?
AS3557 announces 512 IPv4 addresses distributed across 1 routed CIDR prefixes. The network is registered in United States.
Who operates AS3557?
AS3557 is operated by Internet Systems Consortium, Inc.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.
What country is AS3557 registered in?
AS3557 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
