Report for 11520

Name

ALLSTATE-INSURANCE-CO - Allstate Insurance Company, US

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS2.0) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

11520 ALLSTATE-INSURANCE-CO - Allstate Insurance Company, US

  Adjacency:     5  Upstream:     4  Downstream:     1
  Upstream Adjacent AS list
    AS701           UUNET - Verizon Business, US
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS2685          ATGS-MMD-AS - AT&T Enterprises, LLC, US
    AS32787         PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc., US
  Downstream Adjacent AS list
    AS13583         AIP-AS13583 - Allstate Identity Protection, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
2396  AS11520        ORG+TRN Originate:      96000 /15.45  Transit:        256 /24.00 ALLSTATE-INSURANCE-CO - Allstate Insurance Company, US

Aggregation Suggestions

        Filter: Aggregates, Specifics

This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.

 Rank AS            AS Name                                      Current  Wthdw  Aggte  Annce Redctn       %
 1188 AS11520       ALLSTATE-INSURANCE-CO - Allstate Insurance Co     69     53      4     20     49  71.01%


  Prefix               AS Path                              Aggregation Suggestion
  12.26.124.0/24       4777 2497 7018 11520   
  167.127.0.0/16       4777 2497 7018 11520 + Announce - aggregate of 167.127.0.0/17 (4777 2497 7018 11520) and 167.127.128.0/17 (4777 2497 7018 11520)
  167.127.0.0/19       4777 2497 7018 11520 - Withdrawn - aggregated with 167.127.32.0/19 (4777 2497 7018 11520)
  167.127.25.0/24      4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.0.0/19 4777 2497 7018 11520
  167.127.32.0/19      4777 2497 7018 11520 - Withdrawn - aggregated with 167.127.0.0/19 (4777 2497 7018 11520)
  167.127.40.0/23      4777 2497 701 11520  + Announce - aggregate of 167.127.40.0/24 (4777 2497 701 11520) and 167.127.41.0/24 (4777 2497 701 11520)
  167.127.40.0/24      4777 2497 701 11520  - Withdrawn - aggregated with 167.127.41.0/24 (4777 2497 701 11520)
  167.127.41.0/24      4777 2497 701 11520  - Withdrawn - aggregated with 167.127.40.0/24 (4777 2497 701 11520)
  167.127.50.0/24      4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.32.0/19 4777 2497 7018 11520
  167.127.64.0/19      4777 2497 7018 11520 - Withdrawn - aggregated with 167.127.96.0/19 (4777 2497 7018 11520)
  167.127.88.0/21      4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.64.0/19 4777 2497 7018 11520
  167.127.96.0/19      4777 2497 7018 11520 - Withdrawn - aggregated with 167.127.64.0/19 (4777 2497 7018 11520)
  167.127.97.0/24      4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.100.0/23     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.102.0/23     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.104.0/23     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.104.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.105.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.106.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.107.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.108.0/23     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.109.0/24     4777 32787 11520       
  167.127.110.0/23     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.110.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.112.0/20     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.114.0/23     4777 32787 11520       
  167.127.118.0/24     4777 32787 11520       
  167.127.120.0/23     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.120.0/24     4777 32787 11520       
  167.127.122.0/23     4777 32787 11520     + Announce - aggregate of 167.127.122.0/24 (4777 32787 11520) and 167.127.123.0/24 (4777 32787 11520)
  167.127.122.0/24     4777 32787 11520     - Withdrawn - aggregated with 167.127.123.0/24 (4777 32787 11520)
  167.127.123.0/24     4777 32787 11520     - Withdrawn - aggregated with 167.127.122.0/24 (4777 32787 11520)
  167.127.124.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.125.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.96.0/19 4777 2497 7018 11520
  167.127.128.0/19     4777 2497 7018 11520 - Withdrawn - aggregated with 167.127.160.0/19 (4777 2497 7018 11520)
  167.127.128.0/21     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.128.0/19 4777 2497 7018 11520
  167.127.128.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.128.0/19 4777 2497 7018 11520
  167.127.129.0/24     4777 32787 11520       
  167.127.130.0/23     4777 32787 11520     + Announce - aggregate of 167.127.130.0/24 (4777 32787 11520) and 167.127.131.0/24 (4777 32787 11520)
  167.127.130.0/24     4777 32787 11520     - Withdrawn - aggregated with 167.127.131.0/24 (4777 32787 11520)
  167.127.131.0/24     4777 32787 11520     - Withdrawn - aggregated with 167.127.130.0/24 (4777 32787 11520)
  167.127.132.0/23     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.128.0/19 4777 2497 7018 11520
  167.127.134.0/23     4777 32787 11520       
  167.127.136.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.128.0/19 4777 2497 7018 11520
  167.127.160.0/19     4777 2497 7018 11520 - Withdrawn - aggregated with 167.127.128.0/19 (4777 2497 7018 11520)
  167.127.182.0/24     4777 2497 7018 2685 11520   
  167.127.184.0/21     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.160.0/19 4777 2497 7018 11520
  167.127.192.0/19     4777 2497 7018 11520 - Withdrawn - aggregated with 167.127.224.0/19 (4777 2497 7018 11520)
  167.127.205.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.192.0/19 4777 2497 7018 11520
  167.127.206.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.192.0/19 4777 2497 7018 11520
  167.127.207.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.192.0/19 4777 2497 7018 11520
  167.127.208.0/22     4777 32787 11520       
  167.127.212.0/22     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.192.0/19 4777 2497 7018 11520
  167.127.212.0/24     4777 32787 11520       
  167.127.216.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.192.0/19 4777 2497 7018 11520
  167.127.218.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.192.0/19 4777 2497 7018 11520
  167.127.220.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.192.0/19 4777 2497 7018 11520
  167.127.221.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.192.0/19 4777 2497 7018 11520
  167.127.223.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.192.0/19 4777 2497 7018 11520
  167.127.224.0/19     4777 2497 7018 11520 - Withdrawn - aggregated with 167.127.192.0/19 (4777 2497 7018 11520)
  167.127.224.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.224.0/19 4777 2497 7018 11520
  167.127.225.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.224.0/19 4777 2497 7018 11520
  167.127.226.0/24     4777 32787 11520       
  167.127.228.0/24     4777 32787 11520       
  167.127.229.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.224.0/19 4777 2497 7018 11520
  167.127.244.0/22     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.224.0/19 4777 2497 7018 11520
  167.127.245.0/24     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.224.0/19 4777 2497 7018 11520
  167.127.246.0/24     4777 32787 11520       
  167.127.248.0/22     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.224.0/19 4777 2497 7018 11520
  167.127.248.0/23     4777 2497 7018 11520 - Withdrawn - matching aggregate 167.127.224.0/19 4777 2497 7018 11520
  167.127.251.0/24     4777 32787 11520       
  198.207.185.0/24     4777 2497 7018 11520   
  198.252.138.0/24     4777 2497 7018 11520   

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS11520   67 More Specifics   69 Total Advertisements   ALLSTATE-INSURANCE-CO - Allstate Insurance Company, US
    12.26.124.0/24                12.0.0.0/8
    167.127.0.0/19                167.127.0.0/16
    167.127.25.0/24               167.127.0.0/16
    167.127.32.0/19               167.127.0.0/16
    167.127.40.0/24               167.127.0.0/16
    167.127.41.0/24               167.127.0.0/16
    167.127.50.0/24               167.127.0.0/16
    167.127.64.0/19               167.127.0.0/16
    167.127.88.0/21               167.127.0.0/16
    167.127.96.0/19               167.127.0.0/16
    167.127.97.0/24               167.127.0.0/16
    167.127.100.0/23              167.127.0.0/16
    167.127.102.0/23              167.127.0.0/16
    167.127.104.0/23              167.127.0.0/16
    167.127.104.0/24              167.127.0.0/16
    167.127.105.0/24              167.127.0.0/16
    167.127.106.0/24              167.127.0.0/16
    167.127.107.0/24              167.127.0.0/16
    167.127.108.0/23              167.127.0.0/16
    167.127.109.0/24              167.127.0.0/16
    167.127.110.0/23              167.127.0.0/16
    167.127.110.0/24              167.127.0.0/16
    167.127.112.0/20              167.127.0.0/16
    167.127.114.0/23              167.127.0.0/16
    167.127.118.0/24              167.127.0.0/16
    167.127.120.0/23              167.127.0.0/16
    167.127.120.0/24              167.127.0.0/16
    167.127.122.0/24              167.127.0.0/16
    167.127.123.0/24              167.127.0.0/16
    167.127.124.0/24              167.127.0.0/16
    167.127.125.0/24              167.127.0.0/16
    167.127.128.0/19              167.127.0.0/16
    167.127.128.0/21              167.127.0.0/16
    167.127.128.0/24              167.127.0.0/16
    167.127.129.0/24              167.127.0.0/16
    167.127.130.0/24              167.127.0.0/16
    167.127.131.0/24              167.127.0.0/16
    167.127.132.0/23              167.127.0.0/16
    167.127.134.0/23              167.127.0.0/16
    167.127.136.0/24              167.127.0.0/16
    167.127.160.0/19              167.127.0.0/16
    167.127.182.0/24              167.127.0.0/16
    167.127.184.0/21              167.127.0.0/16
    167.127.192.0/19              167.127.0.0/16
    167.127.205.0/24              167.127.0.0/16
    167.127.206.0/24              167.127.0.0/16
    167.127.207.0/24              167.127.0.0/16
    167.127.208.0/22              167.127.0.0/16
    167.127.212.0/22              167.127.0.0/16
    167.127.212.0/24              167.127.0.0/16
    167.127.216.0/24              167.127.0.0/16
    167.127.218.0/24              167.127.0.0/16
    167.127.220.0/24              167.127.0.0/16
    167.127.221.0/24              167.127.0.0/16
    167.127.223.0/24              167.127.0.0/16
    167.127.224.0/19              167.127.0.0/16
    167.127.224.0/24              167.127.0.0/16
    167.127.225.0/24              167.127.0.0/16
    167.127.226.0/24              167.127.0.0/16
    167.127.228.0/24              167.127.0.0/16
    167.127.229.0/24              167.127.0.0/16
    167.127.244.0/22              167.127.0.0/16
    167.127.245.0/24              167.127.0.0/16
    167.127.246.0/24              167.127.0.0/16
    167.127.248.0/22              167.127.0.0/16
    167.127.248.0/23              167.127.0.0/16
    167.127.251.0/24              167.127.0.0/16

Whois Entry

whois: 402603

IANA has recorded AS11520 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS11520\n             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #
             
             
             ASNumber:       11520
             ASName:         ALLSTATE-INSURANCE-CO
             ASHandle:       AS11520
             RegDate:        1998-09-16
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/11520
             
             
             OrgName:        Allstate Insurance Company
             OrgId:          ALLSTA
             Address:        3075 Sanders Road
             City:           Northbrook
             StateProv:      IL
             PostalCode:     60062-7127
             Country:        US
             RegDate:        1993-06-30
             Updated:        2011-09-24
             Ref:            https://rdap.arin.net/registry/entity/ALLSTA
             
             
             OrgAbuseHandle: DOMAI78-ARIN
             OrgAbuseName:   Domain Administrator
             OrgAbusePhone:  +1-847-402-5000 
             OrgAbuseEmail:  dnsadmin@allstate.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/DOMAI78-ARIN
             
             OrgTechHandle: DOMAI78-ARIN
             OrgTechName:   Domain Administrator
             OrgTechPhone:  +1-847-402-5000 
             OrgTechEmail:  dnsadmin@allstate.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/DOMAI78-ARIN
             
             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #