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Autonomous System

AS393303

Ryder System, Inc.

Announced IPs
1,536
CIDR prefixes
5
ASN
AS393303

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 →

⚠ 1 MOAS prefix — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS393303 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)
168.218.5.0/24 AS7046, AS393303 2026-07-24 16:23:50

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
168.218.4.0/23 512
0.0%
Ryder System, Inc. US
168.218.50.0/23 512
0.0%
Ryder System, Inc. US
168.218.4.0/24 256
0.0%
Ryder System, Inc. US
168.218.10.0/24 256
0.4%
Ryder System, Inc. US
168.218.15.0/24 256
0.0%
Ryder System, Inc. US
168.218.18.0/24 256
0.0%
Ryder System, Inc. US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS393303 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
168.218.10.0/24 14,162 2026-07-24 15:46:37
168.218.51.0/24 9,346 2026-07-24 15:46:41
168.218.18.0/24 9,033 2026-07-24 15:46:41
168.218.4.0/24 8,260 2026-07-24 15:46:36
168.218.15.0/24 5,803 2026-07-24 16:17:11
168.218.50.0/24 4,235 2026-07-24 15:46:41
168.218.5.0/24 2,529 2026-07-24 14:57:12

Frequently Asked Questions

What is AS393303?

AS393303 is an Autonomous System Number assigned to Ryder System, Inc.. 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 AS393303 announce?

AS393303 announces 1.5K IPv4 addresses distributed across 5 routed CIDR prefixes. The network is registered in United States.

Who operates AS393303?

AS393303 is operated by Ryder System, Inc.. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS393303 registered in?

AS393303 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 16:25:32 UTC
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