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Autonomous System

AS19257

SUBRIGO CORPORATION

Announced IPs
18,176
CIDR prefixes
22
ASN
AS19257

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.

53/100
Caution
How this score is built

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

⚠ 2 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS19257 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
23.252.77.0/24 AS3257, AS19257 2026-09-10 20:55:49
23.252.78.0/24 AS3257, AS19257 2026-09-10 20:55:49

Network profile

Source: PeeringDB →
Network type NSP
Traffic level 20-50Gbps
Geographic scope North America
Traffic ratio Mostly Outbound
Peering policy Open

Present at 1 internet exchange: Any2West

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
138.229.64.0/19 8.2K
30.9%
SUBRIGO CORPORATION US California Los Angeles
107.150.184.0/21 2.0K
60.4%
SUBRIGO CORPORATION US California Los Angeles
104.255.148.0/22 1.0K
69.7%
SUBRIGO CORPORATION US
107.150.180.0/22 1.0K
25.0%
SUBRIGO CORPORATION US
199.180.152.0/22 1.0K
53.0%
SUBRIGO CORPORATION US California Los Angeles
23.252.64.0/23 512
0.0%
SUBRIGO CORPORATION US
65.171.146.0/23 512
1.0%
SUBRIGO CORPORATION US California Los Angeles
104.255.150.0/23 512
45.1%
SUBRIGO CORPORATION US
107.150.160.0/23 512
0.0%
SUBRIGO CORPORATION US Colorado Denver
216.193.226.0/23 512
8.2%
SUBRIGO CORPORATION US
23.252.69.0/24 256
0.0%
SUBRIGO CORPORATION US Colorado Denver
23.252.70.0/24 256
0.0%
SUBRIGO CORPORATION US
23.252.73.0/24 256
0.0%
SUBRIGO CORPORATION US Virginia Ashburn
23.252.74.0/24 256
0.0%
SUBRIGO CORPORATION US
23.252.77.0/24 256
0.0%
SUBRIGO CORPORATION US
23.252.78.0/24 256
0.0%
SUBRIGO CORPORATION US
66.212.26.0/24 256
0.0%
SUBRIGO CORPORATION US
72.37.136.0/24 256
0.0%
SUBRIGO CORPORATION US
72.37.159.0/24 256
0.0%
SUBRIGO CORPORATION US
104.255.149.0/24 256
94.5%
SUBRIGO CORPORATION US
162.222.91.0/24 256
0.0%
SUBRIGO CORPORATION US
162.222.92.0/24 256
0.0%
SUBRIGO CORPORATION US
162.222.94.0/24 256
0.0%
SUBRIGO CORPORATION US
199.180.158.0/24 256
67.6%
SUBRIGO CORPORATION US California Los Angeles

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS19257 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
23.252.70.0/24 1,477,966 2026-09-10 20:12:37
23.252.64.0/24 1,477,359 2026-09-10 20:47:32
23.252.65.0/24 1,477,275 2026-09-10 20:12:37
23.252.69.0/24 1,477,185 2026-09-10 20:53:40
23.252.73.0/24 1,473,698 2026-09-10 20:53:59
23.252.74.0/24 1,458,855 2026-09-10 20:49:16
107.150.187.0/24 1,425,464 2026-09-10 20:41:58
23.252.77.0/24 1,393,076 2026-09-10 20:12:37
65.171.146.0/24 1,383,348 2026-09-10 20:48:50
23.252.78.0/24 1,367,032 2026-09-10 20:12:37
65.171.147.0/24 1,348,228 2026-09-10 20:48:05
66.212.26.0/24 1,313,222 2026-09-10 20:12:37
199.180.155.0/24 1,294,316 2026-09-10 20:12:44
72.37.136.0/24 1,276,745 2026-09-10 20:51:53
72.37.159.0/24 1,244,989 2026-09-10 20:33:45
104.255.149.0/24 1,217,233 2026-09-10 20:53:40
104.255.150.0/24 1,189,390 2026-09-10 20:47:52
104.255.151.0/24 1,168,809 2026-09-10 18:07:32
107.150.160.0/23 1,147,625 2026-09-10 20:53:31
107.150.180.0/22 1,129,218 2026-09-10 20:49:50
162.222.92.0/24 1,126,749 2026-09-10 20:12:37
107.150.184.0/21 1,117,108 2026-09-10 20:47:28
162.222.91.0/24 1,045,812 2026-09-10 20:12:37
199.180.152.0/24 1,030,371 2026-09-10 20:12:37
199.180.154.0/24 1,027,902 2026-09-10 20:50:23
199.180.158.0/24 1,023,044 2026-09-10 20:33:11
216.193.226.0/24 1,010,633 2026-09-10 20:41:40
138.229.64.0/19 1,004,146 2026-09-10 20:53:48
199.180.153.0/24 1,004,072 2026-09-10 20:33:11
216.193.227.0/24 984,444 2026-09-10 20:52:18
162.222.94.0/24 965,547 2026-09-10 20:53:48
138.229.66.0/24 23,426 2026-09-10 20:51:05
138.229.91.0/24 13,458 2026-09-10 20:12:44
138.229.65.0/24 7,881 2026-09-10 20:12:44
138.229.89.0/24 7,720 2026-09-10 20:12:44
138.229.74.0/24 7,582 2026-09-10 20:12:44
138.229.69.0/24 7,545 2026-09-10 20:12:44
104.255.148.0/24 1,559 2026-06-24 17:22:22

Frequently Asked Questions

What is AS19257?

AS19257 is an Autonomous System Number assigned to SUBRIGO CORPORATION. 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 AS19257 announce?

AS19257 announces 18.2K IPv4 addresses distributed across 22 routed CIDR prefixes. The network is registered in United States.

Who operates AS19257?

AS19257 is operated by SUBRIGO CORPORATION. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS19257 registered in?

AS19257 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: 2026-09-10 20:56:06 UTC
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