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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 v1.1.0 — 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)
23.252.78.0/24 AS3257, AS19257 2026-07-23 19:23:41
23.252.77.0/24 AS3257, AS19257 2026-07-22 23:23:24

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

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 1,471,319 2026-07-23 19:18:28
23.252.64.0/24 1,470,692 2026-07-23 19:18:28
23.252.65.0/24 1,470,612 2026-07-23 19:18:28
23.252.69.0/24 1,470,556 2026-07-23 19:18:28
23.252.73.0/24 1,467,054 2026-07-23 19:18:28
23.252.74.0/24 1,452,212 2026-07-23 19:18:28
107.150.187.0/24 1,419,099 2026-07-23 19:18:28
23.252.77.0/24 1,382,307 2026-07-23 19:25:52
65.171.146.0/24 1,377,612 2026-07-23 19:18:28
23.252.78.0/24 1,356,290 2026-07-23 19:25:52
65.171.147.0/24 1,342,482 2026-07-23 19:18:28
66.212.26.0/24 1,306,682 2026-07-23 19:18:28
199.180.155.0/24 1,288,558 2026-07-23 19:18:28
72.37.136.0/24 1,270,943 2026-07-23 19:18:28
72.37.159.0/24 1,239,186 2026-07-23 19:18:28
104.255.149.0/24 1,211,252 2026-07-23 19:18:28
104.255.150.0/24 1,183,359 2026-07-23 19:18:28
104.255.151.0/24 1,162,791 2026-07-23 19:18:28
107.150.160.0/23 1,141,600 2026-07-23 19:18:28
107.150.180.0/22 1,123,026 2026-07-23 19:18:28
162.222.92.0/24 1,120,641 2026-07-23 19:18:28
107.150.184.0/21 1,111,023 2026-07-23 19:18:28
162.222.91.0/24 1,039,866 2026-07-23 19:18:28
199.180.152.0/24 1,024,677 2026-07-23 19:18:28
199.180.154.0/24 1,022,200 2026-07-23 19:18:28
199.180.158.0/24 1,017,350 2026-07-23 19:18:28
216.193.226.0/24 1,003,024 2026-07-23 19:18:58
199.180.153.0/24 998,089 2026-07-23 19:18:28
138.229.64.0/19 998,084 2026-07-23 19:18:28
216.193.227.0/24 979,024 2026-07-23 19:18:58
162.222.94.0/24 959,518 2026-07-23 19:18:28
138.229.66.0/24 9,456 2026-07-23 19:18:25
138.229.91.0/24 8,486 2026-07-23 19:18:28
138.229.65.0/24 4,113 2026-07-23 19:18:28
138.229.89.0/24 4,004 2026-07-23 19:18:28
138.229.74.0/24 3,922 2026-07-23 19:18:28
138.229.69.0/24 3,889 2026-07-23 19:18:28
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: 2026-07-23 19:25:31 UTC
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