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Autonomous System

AS13273

Alter Way SAS

Announced IPs
27,392
CIDR prefixes
6
ASN
AS13273

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
  • Baseline (neutral) 65
  • Trust score 65 / 100

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

About Alter Way

Founded
2006
Headquarters
France

Network profile

Source: PeeringDB →
Network type Content
Traffic level 1-5Gbps
Geographic scope Europe
Traffic ratio Mostly Outbound
Peering policy Open
IRR record AS-SMILE-OSS

Present at 2 internet exchanges: Equinix Paris: Equinix IX - PA Metro, France-IX Paris

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
213.91.0.0/18 16.4K
0.4%
Alter Way SAS FR — —
213.162.32.0/19 8.2K
1.4%
Alter Way SAS FR — —
185.21.152.0/22 1.0K
6.2%
Alter Way SAS FR — —
185.114.208.0/22 1.0K
0.2%
Alter Way SAS FR — —
195.54.62.0/23 512
8.8%
Alter Way SAS FR — —
91.216.209.0/24 256
26.6%
Alter Way SAS FR — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS13273 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
185.114.208.0/22 61,489 2026-11-13 17:07:44
185.21.152.0/22 61,405 2026-11-13 17:07:44
213.162.32.0/19 55,274 2026-11-13 17:07:44
195.54.62.0/23 53,117 2026-11-13 17:07:44
213.91.0.0/18 47,989 2026-11-13 17:01:58
185.21.152.0/23 12,400 2026-11-13 16:57:20
185.21.154.0/23 12,261 2026-11-13 16:57:20
213.91.32.0/19 12,217 2026-11-13 16:57:20
213.91.0.0/19 12,201 2026-11-13 16:57:20
91.216.209.0/24 11,511 2026-11-13 16:57:19
185.114.208.0/23 11,217 2026-11-13 16:57:19
185.114.210.0/23 10,811 2026-11-13 16:57:19
195.54.63.0/24 10,727 2026-11-13 16:57:19
213.162.32.0/20 10,725 2026-11-13 16:57:19
195.54.62.0/24 10,680 2026-11-13 16:57:19
213.162.48.0/20 10,657 2026-11-13 16:57:19

Frequently Asked Questions

What is AS13273?

AS13273 is an Autonomous System Number assigned to Alter Way SAS. 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 AS13273 announce?

AS13273 announces 27.4K IPv4 addresses distributed across 6 routed CIDR prefixes. The network is registered in France.

Who operates AS13273?

AS13273 is operated by Alter Way SAS. The organization is based in France. You can view all IP ranges and related ASNs on the organization page.

What country is AS13273 registered in?

AS13273 is registered in France. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-11-13 17:09:05 UTC
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