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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
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 7,617 2026-07-24 18:46:57
170.202.216.0/24 7,573 2026-07-24 15:46:37
170.202.176.0/24 7,562 2026-07-24 15:46:37
170.202.219.0/24 7,539 2026-07-24 15:46:37
170.202.218.0/24 7,532 2026-07-24 15:46:37
170.202.215.0/24 7,527 2026-07-24 15:46:37
170.202.217.0/24 7,518 2026-07-24 15:46:37
170.202.233.0/24 7,517 2026-07-24 15:46:37
170.202.222.0/24 7,515 2026-07-24 15:46:37
170.202.128.0/17 7,514 2026-07-24 15:46:37
170.202.202.0/24 7,511 2026-07-24 15:46:37
170.202.0.0/17 7,509 2026-07-24 15:46:37
12.163.16.0/21 6,489 2026-07-24 18:46:19
170.202.236.0/23 5,953 2026-07-24 15:47:24
170.202.235.0/24 5,944 2026-07-24 15:47:24
170.202.246.0/23 5,546 2026-07-24 15:47:24
170.202.172.0/23 5,542 2026-07-24 15:47:24
170.202.252.0/22 5,500 2026-07-24 15:47:24
170.202.245.0/24 5,481 2026-07-24 15:47:24
170.202.240.0/24 5,476 2026-07-24 15:47:24
170.202.241.0/24 5,475 2026-07-24 15:47:24
170.202.244.0/24 5,474 2026-07-24 15:47:24
170.202.174.0/24 5,470 2026-07-24 15:47:24
170.202.238.0/23 5,465 2026-07-24 15:47:24
170.202.228.0/22 5,456 2026-07-24 15:47:24
170.202.164.0/22 5,454 2026-07-24 15:47:24
170.202.248.0/22 5,441 2026-07-24 15:47:24
170.202.160.0/22 5,440 2026-07-24 15:47:24
170.202.224.0/22 5,436 2026-07-24 15:47:24
170.202.168.0/24 5,424 2026-07-24 15:47:24
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: 2026-07-24 19:25:32 UTC
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