Report for 12147

Name

DFS-RWD - Discover Financial Services, 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.

12147 DFS-RWD - Discover Financial Services, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS3356          LEVEL3 - Level 3 Parent, LLC, US
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS32787         PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
21983 AS12147        ORIGIN  Originate:       2560 /20.68  Transit:          0 /0.00  DFS-RWD - Discover Financial Services, 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       %
20553 AS12147       DFS-RWD - Discover Financial Services, US         10      2      1      9      1  10.00%


  Prefix               AS Path                              Aggregation Suggestion
  170.217.161.0/24     4777 2497 7018 12147   
  170.217.252.0/24     4777 2497 7018 12147   
  170.217.254.0/24     4777 2497 3356 12147   
  199.38.149.0/24      4777 32787 12147       
  199.38.150.0/24      4777 32787 12147       
  199.38.153.0/24      4777 2497 3356 12147   
  199.38.154.0/24      4777 2497 7018 12147   
  208.88.88.0/24       4777 2497 7018 12147   
  208.88.90.0/23       4777 2497 7018 12147 + Announce - aggregate of 208.88.90.0/24 (4777 2497 7018 12147) and 208.88.91.0/24 (4777 2497 7018 12147)
  208.88.90.0/24       4777 2497 7018 12147 - Withdrawn - aggregated with 208.88.91.0/24 (4777 2497 7018 12147)
  208.88.91.0/24       4777 2497 7018 12147 - Withdrawn - aggregated with 208.88.90.0/24 (4777 2497 7018 12147)

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

AS12147   6 More Specifics   10 Total Advertisements   DFS-RWD - Discover Financial Services, US
    170.217.161.0/24              170.217.0.0/16
    170.217.252.0/24              170.217.0.0/16
    170.217.254.0/24              170.217.0.0/16
    208.88.88.0/24                208.88.88.0/22
    208.88.90.0/24                208.88.88.0/22
    208.88.91.0/24                208.88.88.0/22

Whois Entry

whois: 402591

IANA has recorded AS12147 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS12147\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:       12147
             ASName:         DFS-RWD
             ASHandle:       AS12147
             RegDate:        2005-06-10
             Updated:        2020-09-08
             Ref:            https://rdap.arin.net/registry/autnum/12147
             
             
             OrgName:        Discover Financial Services
             OrgId:          DFS-35
             Address:        2500 Lake Cook Rd
             City:           Riverwoods
             StateProv:      IL
             PostalCode:     60015
             Country:        US
             RegDate:        2003-03-25
             Updated:        2022-05-17
             Ref:            https://rdap.arin.net/registry/entity/DFS-35
             
             
             OrgRoutingHandle: PMA213-ARIN
             OrgRoutingName:   Appling, Paul Matthew
             OrgRoutingPhone:  +1-224-405-8960 
             OrgRoutingEmail:  mattappling@discover.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/PMA213-ARIN
             
             OrgDNSHandle: WOODL3-ARIN
             OrgDNSName:   Wood, Lance 
             OrgDNSPhone:  +1-801-902-4175 
             OrgDNSEmail:  lancewood@discover.com
             OrgDNSRef:    https://rdap.arin.net/registry/entity/WOODL3-ARIN
             
             OrgTechHandle: OLSEN205-ARIN
             OrgTechName:   Olsen, Jason 
             OrgTechPhone:  +1-224-405-2566 
             OrgTechEmail:  jasonolsen@discover.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/OLSEN205-ARIN
             
             OrgTechHandle: SEPAN3-ARIN
             OrgTechName:   Sepanski, David 
             OrgTechPhone:  +1-224-405-0900 
             OrgTechEmail:  dave.sepanski@capitalone.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/SEPAN3-ARIN
             
             OrgTechHandle: PMA213-ARIN
             OrgTechName:   Appling, Paul Matthew
             OrgTechPhone:  +1-224-405-8960 
             OrgTechEmail:  mattappling@discover.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/PMA213-ARIN
             
             OrgAbuseHandle: DSE9-ARIN
             OrgAbuseName:   Sepanski, Dave 
             OrgAbusePhone:  +1-224-405-2048 
             OrgAbuseEmail:  davesepanski@discoverfinancial.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/DSE9-ARIN
             
             OrgTechHandle: WOODL3-ARIN
             OrgTechName:   Wood, Lance 
             OrgTechPhone:  +1-801-902-4175 
             OrgTechEmail:  lancewood@discover.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/WOODL3-ARIN
             
             RTechHandle: PMA213-ARIN
             RTechName:   Appling, Paul Matthew
             RTechPhone:  +1-224-405-8960 
             RTechEmail:  mattappling@discover.com
             RTechRef:    https://rdap.arin.net/registry/entity/PMA213-ARIN
             
             RTechHandle: DSE10-ARIN
             RTechName:   Sepanski, Dave 
             RTechPhone:  +1-224-405-2048 
             RTechEmail:  davesepanski@discoverfinancial.com
             RTechRef:    https://rdap.arin.net/registry/entity/DSE10-ARIN
             
             RTechHandle: OLSEN205-ARIN
             RTechName:   Olsen, Jason 
             RTechPhone:  +1-224-405-2566 
             RTechEmail:  jasonolsen@discover.com
             RTechRef:    https://rdap.arin.net/registry/entity/OLSEN205-ARIN
             
             RTechHandle: WOODL3-ARIN
             RTechName:   Wood, Lance 
             RTechPhone:  +1-801-902-4175 
             RTechEmail:  lancewood@discover.com
             RTechRef:    https://rdap.arin.net/registry/entity/WOODL3-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.
             #