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ASN Lookup

Networks, upstreams, peers and prefixes of an autonomous system
AS33657
ASN
ARIN
RIR
28
IPv4 Prefixes
239
IPv6 Prefixes
AS Information
ASNAS33657
NameCMCS
OrganisationComcast Cable Communications, LLC
Country –
RIRARIN
Allocated16.02.2005
Network Overview
IPv4 Prefixes28
IPv6 Prefixes239
Upstreams (Transit)2
Downstreams (Customers)135
BGP Peers0
AS Path (BGP neighbours)
Upstreams (Transit)
AS3356Lumen (Level 3)AS7922Comcast Cable Communications, LLC
AS33657CMCS
Downstreams (Customers)
AS10440Merkle Inc.AS10918Accurant Cloud Services LLCAS11131University of Maryland Baltimore County (UMBC)AS11362Vector Data Systems LLCAS11790Random House, Inc.AS11951Medical Computer Systems+129
Upstreams (Transit) (2)
AS3356Lumen (Level 3)
AS7922Comcast Cable Communications, LLC
Downstreams (Customers) (100)
IPv4 Prefixes (28)
50.202.155.0/24
50.205.74.0/24
50.204.128.0/24
50.223.159.0/24
50.216.214.0/24
50.202.117.0/24
199.249.199.0/24
50.219.87.0/24
192.110.220.0/23
50.232.109.0/24
50.201.252.0/24
50.207.162.0/24
192.189.235.0/24
50.204.116.0/24
50.232.184.0/24
50.223.158.0/24
50.224.212.0/24
50.203.251.0/24
208.87.105.0/24
50.236.234.0/24
50.235.98.0/24
69.67.80.0/20
50.236.38.0/24
107.1.101.0/24
50.232.173.0/24
76.78.2.0/24
50.235.236.0/24
50.238.163.0/24
IPv6 Prefixes (239)
2001:559:a2::/48
2001:559:84af::/48
2001:559:857e::/48
2001:559:c4b0::/48
2001:559:c32e::/48
2001:559:489::/48
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2001:559:c1a1::/48
2001:559:816a::/48
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2001:559:87::/48
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2001:559:c505::/48
2001:559:c2c6::/48
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2001:559:c349::/48
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2001:559:c2b0::/48
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2001:559:c37a::/48
2001:559:833a::/48
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2001:559:c42b::/48
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2001:559:3d2::/48
2001:559:874d::/48
2001:559:c012::/48
2001:559:8581::/48
2001:559:c454::/48
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2001:559:84cc::/48
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2001:559:721::/48
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2001:559:836f::/48
2001:559:574::/48
2001:559:832a::/48
2001:559:80c2::/48
2001:559:c2b1::/48
My IP ASN Lookup IP Lookup WHOIS DNS Lookup

What is an ASN?

An Autonomous System Number (ASN) is a unique number assigned to a network on the internet. Upstreams are the transit providers through which the AS reaches the internet. Peers are networks with which direct traffic exchange takes place. Prefixes are the IP address ranges that the AS announces to the internet. Data via RIPE NCC RDAP and RIPEstat API.

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