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ASN Lookup Tool
AS11971 PFIZERNET-GROTON

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS11971
Organisation
Pfizer Inc.
Name
PFIZERNET-GROTON
Total IPv4 Addresses
55,552
Total IPv4 Prefixes
28
Total IPv6 Prefixes
1
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#3,944 out of 77,686
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1999-02-17
Registration Last Change
2021-07-03
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
AS3356
US flagLevel 3 Parent, LLC
AS209
US flagCenturyLink Communications, LLC
AS2828
US flagVerizon Business
AS6461
US flagZayo Bandwidth
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

Prefix146.240.1.0/24
Range From146.240.1.0
Range To146.240.1.255
Prefix148.168.0.0/19
Range From148.168.0.0
Range To148.168.31.255
Prefix148.168.32.0/19
Range From148.168.32.0
Range To148.168.63.255
Prefix148.168.65.0/24
Range From148.168.65.0
Range To148.168.65.255
Prefix148.168.66.0/23
Range From148.168.66.0
Range To148.168.67.255
Showing 5 of 28
IPv6 Active Prefixes
Prefix2620:1fd:20::/44
Range From2620:1fd:20::
Range To2620:1fd:2f:ffff:ffff:ffff:ffff:ffff
Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.