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Autonomous System

AS16617

CISP

Announced IPs
24,320
CIDR prefixes
8
ASN
AS16617

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.

65/100
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 →
Geographic scope Not Disclosed
Traffic ratio Not Disclosed
Peering policy Open

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
64.31.64.0/19 8.2K
51.7%
CISP US Ohio Bowling Green
64.254.128.0/20 4.1K
36.4%
CISP US Ohio Toledo
67.211.160.0/20 4.1K
0.0%
CISP US Ohio Toledo
68.70.176.0/20 4.1K
10.3%
CISP US Ohio Toledo
205.251.160.0/20 4.1K
86.9%
CISP US Ohio Toledo
67.211.168.0/21 2.0K
4.4%
CISP US
67.211.160.0/22 1.0K
9.2%
CISP US
67.211.164.0/23 512
47.3%
CISP US
67.211.166.0/24 256
0.4%
CISP US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS16617 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
205.251.162.0/24 5,670 2026-07-29 10:42:35
67.211.161.0/24 4,541 2026-07-29 10:55:35
64.31.94.0/24 4,505 2026-07-29 10:55:32
64.254.135.0/24 4,505 2026-07-29 10:55:32
64.254.136.0/24 4,501 2026-07-29 10:55:32
67.211.163.0/24 4,500 2026-07-29 10:55:35
68.70.176.0/20 4,500 2026-07-29 10:55:35
64.31.64.0/20 4,495 2026-07-29 10:55:32
64.254.134.0/24 4,495 2026-07-29 10:55:32
67.211.162.0/24 4,494 2026-07-29 10:55:35
68.70.181.0/24 4,492 2026-07-29 10:55:35
64.31.93.0/24 4,492 2026-07-29 10:55:32
64.31.64.0/24 4,488 2026-07-29 10:55:32
68.70.182.0/24 4,486 2026-07-29 10:55:35
67.211.160.0/20 4,481 2026-07-29 10:55:35
64.254.128.0/20 4,479 2026-07-29 10:55:32
64.31.66.0/24 4,459 2026-07-29 10:55:32
64.31.64.0/19 4,455 2026-07-29 10:55:32
68.70.183.0/24 4,434 2026-07-29 10:55:35
64.254.129.0/24 4,428 2026-07-29 10:55:32
205.251.171.0/24 4,301 2026-07-29 10:42:34
205.251.160.0/20 4,276 2026-07-29 10:42:35
205.251.165.0/24 4,271 2026-07-29 10:42:34
205.251.163.0/24 4,271 2026-07-29 10:42:34
205.251.173.0/24 4,269 2026-07-29 10:42:34
205.251.166.0/24 4,262 2026-07-29 10:42:34
205.251.164.0/24 4,252 2026-07-29 10:42:34
205.251.168.0/24 1,387 2026-06-24 17:21:52

Frequently Asked Questions

What is AS16617?

AS16617 is an Autonomous System Number assigned to CISP. 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 AS16617 announce?

AS16617 announces 24.3K IPv4 addresses distributed across 8 routed CIDR prefixes. The network is registered in United States.

Who operates AS16617?

AS16617 is operated by CISP. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS16617 registered in?

AS16617 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: 2026-07-29 11:10:31 UTC
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