Report for 19524

Name

COMERICA-INC - Comerica Incorporated, 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 AS6447) 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.

19524 COMERICA-INC, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4, US
    AS19905         SECURITYSERVICES, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
9645  AS19524        ORIGIN  Originate:      11264 /18.54  Transit:          0 /0.00  COMERICA-INC, 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       %
 2078 AS19524       COMERICA-INC, US                                  44     38     10     16     28  63.64%


  Prefix               AS Path                              Aggregation Suggestion
  12.15.6.0/23         3257 19905 19524     + Announce - aggregate of 12.15.6.0/24 (3257 19905 19524) and 12.15.7.0/24 (3257 19905 19524)
  12.15.6.0/24         3257 19905 19524     - Withdrawn - aggregated with 12.15.7.0/24 (3257 19905 19524)
  12.15.7.0/24         3257 19905 19524     - Withdrawn - aggregated with 12.15.6.0/24 (3257 19905 19524)
  170.228.0.0/22       3257 19905 19524     + Announce - aggregate of 170.228.0.0/23 (3257 19905 19524) and 170.228.2.0/23 (3257 19905 19524)
  170.228.0.0/24       3257 19905 19524     - Withdrawn - aggregated with 170.228.1.0/24 (3257 19905 19524)
  170.228.1.0/24       3257 19905 19524     - Withdrawn - aggregated with 170.228.0.0/24 (3257 19905 19524)
  170.228.2.0/24       3257 19905 19524     - Withdrawn - aggregated with 170.228.3.0/24 (3257 19905 19524)
  170.228.3.0/24       3257 19905 19524     - Withdrawn - aggregated with 170.228.2.0/24 (3257 19905 19524)
  170.228.4.0/23       3257 19905 19524     + Announce - aggregate of 170.228.4.0/24 (3257 19905 19524) and 170.228.5.0/24 (3257 19905 19524)
  170.228.4.0/24       3257 19905 19524     - Withdrawn - aggregated with 170.228.5.0/24 (3257 19905 19524)
  170.228.5.0/24       3257 19905 19524     - Withdrawn - aggregated with 170.228.4.0/24 (3257 19905 19524)
  170.228.6.0/24       3257 19905 19524       
  170.228.8.0/21       3257 19905 19524     + Announce - aggregate of 170.228.8.0/22 (3257 19905 19524) and 170.228.12.0/22 (3257 19905 19524)
  170.228.8.0/24       3257 19905 19524     - Withdrawn - aggregated with 170.228.9.0/24 (3257 19905 19524)
  170.228.9.0/24       3257 19905 19524     - Withdrawn - aggregated with 170.228.8.0/24 (3257 19905 19524)
  170.228.10.0/24      3257 19905 19524     - Withdrawn - aggregated with 170.228.11.0/24 (3257 19905 19524)
  170.228.11.0/24      3257 19905 19524     - Withdrawn - aggregated with 170.228.10.0/24 (3257 19905 19524)
  170.228.12.0/24      3257 19905 19524     - Withdrawn - aggregated with 170.228.13.0/24 (3257 19905 19524)
  170.228.13.0/24      3257 19905 19524     - Withdrawn - aggregated with 170.228.12.0/24 (3257 19905 19524)
  170.228.14.0/24      3257 19905 19524     - Withdrawn - aggregated with 170.228.15.0/24 (3257 19905 19524)
  170.228.15.0/24      3257 19905 19524     - Withdrawn - aggregated with 170.228.14.0/24 (3257 19905 19524)
  170.228.100.0/24     3257 19905 19524       
  170.228.104.0/22     3257 19905 19524     + Announce - aggregate of 170.228.104.0/23 (3257 19905 19524) and 170.228.106.0/23 (3257 19905 19524)
  170.228.104.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.105.0/24 (3257 19905 19524)
  170.228.105.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.104.0/24 (3257 19905 19524)
  170.228.106.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.107.0/24 (3257 19905 19524)
  170.228.107.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.106.0/24 (3257 19905 19524)
  170.228.156.0/24     3257 19905 19524       
  170.228.180.0/22     3257 19905 19524     + Announce - aggregate of 170.228.180.0/23 (3257 19905 19524) and 170.228.182.0/23 (3257 19905 19524)
  170.228.180.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.181.0/24 (3257 19905 19524)
  170.228.181.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.180.0/24 (3257 19905 19524)
  170.228.182.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.183.0/24 (3257 19905 19524)
  170.228.183.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.182.0/24 (3257 19905 19524)
  170.228.184.0/22     3257 19905 19524     + Announce - aggregate of 170.228.184.0/23 (3257 19905 19524) and 170.228.186.0/23 (3257 19905 19524)
  170.228.184.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.185.0/24 (3257 19905 19524)
  170.228.185.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.184.0/24 (3257 19905 19524)
  170.228.186.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.187.0/24 (3257 19905 19524)
  170.228.187.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.186.0/24 (3257 19905 19524)
  170.228.188.0/24     7018 19524 19524 19524 19524   
  170.228.204.0/24     7018 19524 19524 19524 19524   
  170.228.212.0/22     3257 19905 19524     + Announce - aggregate of 170.228.212.0/23 (3257 19905 19524) and 170.228.214.0/23 (3257 19905 19524)
  170.228.212.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.213.0/24 (3257 19905 19524)
  170.228.213.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.212.0/24 (3257 19905 19524)
  170.228.214.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.215.0/24 (3257 19905 19524)
  170.228.215.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.214.0/24 (3257 19905 19524)
  170.228.216.0/22     3257 19905 19524     + Announce - aggregate of 170.228.216.0/23 (3257 19905 19524) and 170.228.218.0/23 (3257 19905 19524)
  170.228.216.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.217.0/24 (3257 19905 19524)
  170.228.217.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.216.0/24 (3257 19905 19524)
  170.228.218.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.219.0/24 (3257 19905 19524)
  170.228.219.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.218.0/24 (3257 19905 19524)
  170.228.220.0/24     7018 19524             
  170.228.252.0/23     3257 19905 19524     + Announce - aggregate of 170.228.252.0/24 (3257 19905 19524) and 170.228.253.0/24 (3257 19905 19524)
  170.228.252.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.253.0/24 (3257 19905 19524)
  170.228.253.0/24     3257 19905 19524     - Withdrawn - aggregated with 170.228.252.0/24 (3257 19905 19524)

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

AS19524   45 More Specifics   45 Total Advertisements   COMERICA-INC, US
    12.15.6.0/24                  12.0.0.0/8
    12.15.7.0/24                  12.0.0.0/8
    170.228.0.0/24                170.228.0.0/16
    170.228.1.0/24                170.228.0.0/16
    170.228.2.0/24                170.228.0.0/16
    170.228.3.0/24                170.228.0.0/16
    170.228.4.0/24                170.228.0.0/16
    170.228.5.0/24                170.228.0.0/16
    170.228.6.0/24                170.228.0.0/16
    170.228.8.0/24                170.228.0.0/16
    170.228.9.0/24                170.228.0.0/16
    170.228.10.0/24               170.228.0.0/16
    170.228.11.0/24               170.228.0.0/16
    170.228.12.0/24               170.228.0.0/16
    170.228.13.0/24               170.228.0.0/16
    170.228.14.0/24               170.228.0.0/16
    170.228.15.0/24               170.228.0.0/16
    170.228.28.0/24               170.228.0.0/16
    170.228.100.0/24              170.228.0.0/16
    170.228.104.0/24              170.228.0.0/16
    170.228.105.0/24              170.228.0.0/16
    170.228.106.0/24              170.228.0.0/16
    170.228.107.0/24              170.228.0.0/16
    170.228.156.0/24              170.228.0.0/16
    170.228.180.0/24              170.228.0.0/16
    170.228.181.0/24              170.228.0.0/16
    170.228.182.0/24              170.228.0.0/16
    170.228.183.0/24              170.228.0.0/16
    170.228.184.0/24              170.228.0.0/16
    170.228.185.0/24              170.228.0.0/16
    170.228.186.0/24              170.228.0.0/16
    170.228.187.0/24              170.228.0.0/16
    170.228.188.0/24              170.228.0.0/16
    170.228.204.0/24              170.228.0.0/16
    170.228.212.0/24              170.228.0.0/16
    170.228.213.0/24              170.228.0.0/16
    170.228.214.0/24              170.228.0.0/16
    170.228.215.0/24              170.228.0.0/16
    170.228.216.0/24              170.228.0.0/16
    170.228.217.0/24              170.228.0.0/16
    170.228.218.0/24              170.228.0.0/16
    170.228.219.0/24              170.228.0.0/16
    170.228.220.0/24              170.228.0.0/16
    170.228.252.0/24              170.228.0.0/16
    170.228.253.0/24              170.228.0.0/16

Whois Entry

whois: 402590

IANA has recorded AS19524 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS19524\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:       19524
             ASName:         COMERICA-INC
             ASHandle:       AS19524
             RegDate:        2001-01-16
             Updated:        2026-03-31
             Ref:            https://rdap.arin.net/registry/autnum/19524
             
             
             OrgName:        Comerica Incorporated
             OrgId:          COMERI-3
             Address:        3701 Hamlin Rd.
             City:           Auburn Hills
             StateProv:      MI
             PostalCode:     48326
             Country:        US
             RegDate:        2001-01-16
             Updated:        2026-03-31
             Ref:            https://rdap.arin.net/registry/entity/COMERI-3
             
             
             OrgAbuseHandle: OTOOL13-ARIN
             OrgAbuseName:   OToole, Sean 
             OrgAbusePhone:  +1-248-371-4329 
             OrgAbuseEmail:  sotoole@comerica.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/OTOOL13-ARIN
             
             OrgTechHandle: OTOOL13-ARIN
             OrgTechName:   OToole, Sean 
             OrgTechPhone:  +1-248-371-4329 
             OrgTechEmail:  sotoole@comerica.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/OTOOL13-ARIN
             
             OrgTechHandle: FRANK58-ARIN
             OrgTechName:   Frank, George 
             OrgTechPhone:  +1-248-371-4500 
             OrgTechEmail:  gfrank@comerica.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/FRANK58-ARIN
             
             OrgTechHandle: MDC57-ARIN
             OrgTechName:   Caza, Matt D
             OrgTechPhone:  +1-248-371-4395 
             OrgTechEmail:  mdcaza@comerica.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/MDC57-ARIN
             
             OrgAbuseHandle: MDC57-ARIN
             OrgAbuseName:   Caza, Matt D
             OrgAbusePhone:  +1-248-371-4395 
             OrgAbuseEmail:  mdcaza@comerica.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/MDC57-ARIN
             
             RAbuseHandle: MDC57-ARIN
             RAbuseName:   Caza, Matt D
             RAbusePhone:  +1-248-371-4395 
             RAbuseEmail:  mdcaza@comerica.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/MDC57-ARIN
             
             RTechHandle: MDC57-ARIN
             RTechName:   Caza, Matt D
             RTechPhone:  +1-248-371-4395 
             RTechEmail:  mdcaza@comerica.com
             RTechRef:    https://rdap.arin.net/registry/entity/MDC57-ARIN
             
             RTechHandle: OTOOL13-ARIN
             RTechName:   OToole, Sean 
             RTechPhone:  +1-248-371-4329 
             RTechEmail:  sotoole@comerica.com
             RTechRef:    https://rdap.arin.net/registry/entity/OTOOL13-ARIN
             
             RAbuseHandle: OTOOL13-ARIN
             RAbuseName:   OToole, Sean 
             RAbusePhone:  +1-248-371-4329 
             RAbuseEmail:  sotoole@comerica.com
             RAbuseRef:    https://rdap.arin.net/registry/entity/OTOOL13-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.
             #