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Autonomous System

AS31857

Ziply Fiber

Announced IPs
10,752
CIDR prefixes
8
ASN
AS31857

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.

70/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Traffic level 20-50Gbps
Geographic scope Regional
Traffic ratio Mostly Inbound
Peering policy Open
IRR record ARIN::AS-PTERA

Present at 1 internet exchange: SpokaneIX

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS31857 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
162.213.180.0/22 10,859 2026-09-12 02:26:14
66.117.64.0/21 10,823 2026-09-12 02:26:14
38.94.100.0/22 10,784 2026-09-12 02:26:16
69.28.32.0/20 10,769 2026-09-12 02:26:14
216.229.183.0/24 10,662 2026-09-12 02:26:14
23.157.48.0/24 10,643 2026-09-12 02:26:14
141.193.60.0/22 10,620 2026-09-12 02:26:14
199.127.112.0/22 10,542 2026-09-12 02:26:14

Frequently Asked Questions

What is AS31857?

AS31857 is an Autonomous System Number assigned to Ziply Fiber. 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 AS31857 announce?

AS31857 announces 10.8K IPv4 addresses distributed across 8 routed CIDR prefixes. The network is registered in United States.

Who operates AS31857?

AS31857 is operated by Ziply Fiber. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS31857 registered in?

AS31857 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-09-12 02:41:43 UTC
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