Skip to main content
Autonomous System

AS17166

Travelers Property Casualty Corp.

Announced IPs
55,296
CIDR prefixes
47
ASN
AS17166

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 →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
170.202.224.0/19 8.2K
1.3%
Travelers Property Casualty Corp. US
170.202.0.0/20 4.1K
3.6%
Travelers Property Casualty Corp. US
170.202.32.0/20 4.1K
0.0%
Travelers Property Casualty Corp. US
170.202.96.0/20 4.1K
0.0%
Travelers Property Casualty Corp. US
170.202.128.0/20 4.1K
0.0%
Travelers Property Casualty Corp. US
170.202.160.0/20 4.1K
0.0%
Travelers Property Casualty Corp. US
12.163.16.0/21 2.0K
0.1%
Travelers Property Casualty Corp. US
170.202.56.0/21 2.0K
0.0%
Travelers Property Casualty Corp. US
170.202.192.0/21 2.0K
0.0%
Travelers Property Casualty Corp. US
170.202.216.0/21 2.0K
3.1%
Travelers Property Casualty Corp. US Connecticut Glastonbury
170.202.16.0/22 1.0K
0.0%
Travelers Property Casualty Corp. US
170.202.28.0/22 1.0K
0.0%
Travelers Property Casualty Corp. US
170.202.48.0/22 1.0K
0.0%
Travelers Property Casualty Corp. US
170.202.68.0/22 1.0K
0.0%
Travelers Property Casualty Corp. US
170.202.92.0/22 1.0K
0.0%
Travelers Property Casualty Corp. US
170.202.116.0/22 1.0K
0.0%
Travelers Property Casualty Corp. US
170.202.124.0/22 1.0K
0.0%
Travelers Property Casualty Corp. US
170.202.212.0/22 1.0K
0.3%
Travelers Property Casualty Corp. US
170.202.20.0/23 512
0.0%
Travelers Property Casualty Corp. US
170.202.54.0/23 512
0.0%
Travelers Property Casualty Corp. US
170.202.74.0/23 512
0.0%
Travelers Property Casualty Corp. US
170.202.76.0/23 512
0.0%
Travelers Property Casualty Corp. US
170.202.82.0/23 512
0.0%
Travelers Property Casualty Corp. US
170.202.84.0/23 512
0.0%
Travelers Property Casualty Corp. US
170.202.112.0/23 512
0.0%
Travelers Property Casualty Corp. US
170.202.120.0/23 512
0.0%
Travelers Property Casualty Corp. US
170.202.178.0/23 512
0.0%
Travelers Property Casualty Corp. US
170.202.180.0/23 512
0.0%
Travelers Property Casualty Corp. US
170.202.204.0/23 512
0.0%
Travelers Property Casualty Corp. US
71.4.224.0/24 256
0.0%
Travelers Property Casualty Corp. US
165.175.128.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.23.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.24.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.27.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.52.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.73.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.79.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.81.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.86.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.115.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.123.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.176.0/24 256
2.3%
Travelers Property Casualty Corp. US
170.202.186.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.190.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.201.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.202.0/24 256
0.0%
Travelers Property Casualty Corp. US
170.202.206.0/24 256
0.0%
Travelers Property Casualty Corp. US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS17166 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
71.4.224.0/24 19,923 2026-09-15 01:24:23
170.202.216.0/24 18,892 2026-09-15 01:25:24
170.202.219.0/24 18,775 2026-09-15 01:25:24
170.202.217.0/24 18,768 2026-09-15 01:25:24
170.202.218.0/24 18,760 2026-09-15 01:25:24
170.202.176.0/24 18,750 2026-09-15 01:25:24
170.202.215.0/24 18,748 2026-09-15 01:25:24
170.202.128.0/17 18,725 2026-09-15 01:25:24
170.202.202.0/24 18,715 2026-09-15 01:25:24
170.202.222.0/24 18,714 2026-09-15 01:25:24
170.202.233.0/24 18,700 2026-09-15 01:25:24
170.202.0.0/17 18,677 2026-09-15 01:25:24
12.163.16.0/21 13,254 2026-09-15 01:18:14
170.202.236.0/23 12,380 2026-09-15 01:21:12
170.202.235.0/24 12,362 2026-09-15 01:21:12
170.202.246.0/23 11,806 2026-09-15 01:22:53
170.202.248.0/22 11,780 2026-09-15 01:22:53
170.202.172.0/23 11,765 2026-09-15 01:22:53
170.202.252.0/22 11,755 2026-09-15 01:22:53
170.202.245.0/24 11,743 2026-09-15 01:22:53
170.202.241.0/24 11,736 2026-09-15 01:22:53
170.202.238.0/23 11,716 2026-09-15 01:22:53
170.202.228.0/22 11,714 2026-09-15 01:22:53
170.202.164.0/22 11,695 2026-09-15 01:22:53
170.202.174.0/24 11,679 2026-09-15 01:22:53
170.202.244.0/24 11,678 2026-09-15 01:22:53
170.202.240.0/24 11,669 2026-09-15 01:22:53
170.202.224.0/22 11,628 2026-09-15 01:22:53
170.202.168.0/24 11,624 2026-09-15 01:22:53
170.202.160.0/22 11,621 2026-09-15 01:22:53
165.175.128.0/24 3,313 2026-06-01 02:19:35

Frequently Asked Questions

What is AS17166?

AS17166 is an Autonomous System Number assigned to Travelers Property Casualty Corp.. 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 AS17166 announce?

AS17166 announces 55.3K IPv4 addresses distributed across 47 routed CIDR prefixes. The network is registered in United States.

Who operates AS17166?

AS17166 is operated by Travelers Property Casualty Corp.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS17166 registered in?

AS17166 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: 2026-09-15 01:54:06 UTC
Share