Report for 13599

Name

13599 - Eisai Inc., 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.

13599 13599 - Eisai Inc., US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS54004         LIGHTPATH - Cablevision Lightpath LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
58969 AS13599        ORIGIN  Originate:        256 /24.00  Transit:          0 /0.00  13599 - Eisai 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       %
32955 AS13599       13599 - Eisai Inc., US                             1      0      0      1      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  173.251.54.0/24      4777 2516 3356 6128 54004 13599   

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

AS13599   1 More Specifics   1 Total Advertisements   13599 - Eisai Inc., US
    173.251.54.0/24               173.251.0.0/17

Whois Entry

whois: 402599

IANA has recorded AS13599 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS13599\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:       13599
             ASName:         13599
             ASHandle:       AS13599
             RegDate:        2015-10-27
             Updated:        2024-08-14
             Ref:            https://rdap.arin.net/registry/autnum/13599
             
             
             OrgName:        Eisai Inc.
             OrgId:          EISAI-1
             Address:        500 Frank W. Burr Blvd.
             Address:        5th Floor
             City:           Teaneck
             StateProv:      NJ
             PostalCode:     07666
             Country:        US
             RegDate:        2004-03-04
             Updated:        2015-09-09
             Ref:            https://rdap.arin.net/registry/entity/EISAI-1
             
             
             OrgTechHandle: MPH11-ARIN
             OrgTechName:   Phillips, Michael 
             OrgTechPhone:  +1-201-746-2392 
             OrgTechEmail:  Michael_Phillips@eisai.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/MPH11-ARIN
             
             OrgAbuseHandle: MPH11-ARIN
             OrgAbuseName:   Phillips, Michael 
             OrgAbusePhone:  +1-201-746-2392 
             OrgAbuseEmail:  Michael_Phillips@eisai.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/MPH11-ARIN
             
             OrgTechHandle: CALAH-ARIN
             OrgTechName:   Calahorrano, Edwin 
             OrgTechPhone:  +1-201-364-8161 
             OrgTechEmail:  Edwin_Calahorrano@eisai.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/CALAH-ARIN
             
             RTechHandle: DINGL28-ARIN
             RTechName:   Dinglasan, Ivan 
             RTechPhone:  +1-862-440-5260 
             RTechEmail:  Ivan_Dinglasan@eisai.com
             RTechRef:    https://rdap.arin.net/registry/entity/DINGL28-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.
             #