Report for 3571

Name

EY-AS - Ernst & Young LLP, 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.

3571 EY-AS - Ernst & Young LLP, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
15802 AS3571         ORIGIN  Originate:       4608 /19.83  Transit:          0 /0.00  EY-AS - Ernst & Young LLP, 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       %
 4526 AS3571        EY-AS - Ernst & Young LLP, US                     18     14      3      7     11  61.11%


  Prefix               AS Path                              Aggregation Suggestion
  199.49.16.0/21       4777 2516 3356 3571 3571 3571 3571 + Announce - aggregate of 199.49.16.0/22 (4777 2516 3356 3571 3571 3571 3571) and 199.49.20.0/22 (4777 2516 3356 3571 3571 3571 3571)
  199.49.16.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.49.17.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.49.17.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.49.16.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.49.18.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.49.19.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.49.19.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.49.18.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.49.20.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.49.21.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.49.21.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.49.20.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.49.22.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.49.23.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.49.23.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.49.22.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.49.81.0/24       4777 2497 7018 3571 3571 3571 3571   
  199.52.8.0/24        4777 2497 7018 3571 3571 3571 3571   
  199.52.9.0/24        4777 2516 3356 3571 3571 3571 3571   
  199.52.10.0/23       4777 2516 3356 3571 3571 3571 3571 + Announce - aggregate of 199.52.10.0/24 (4777 2516 3356 3571 3571 3571 3571) and 199.52.11.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.52.10.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.52.11.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.52.11.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.52.10.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.52.12.0/22       4777 2516 3356 3571 3571 3571 3571 + Announce - aggregate of 199.52.12.0/23 (4777 2516 3356 3571 3571 3571 3571) and 199.52.14.0/23 (4777 2516 3356 3571 3571 3571 3571)
  199.52.12.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.52.13.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.52.13.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.52.12.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.52.14.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.52.15.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.52.15.0/24       4777 2516 3356 3571 3571 3571 3571 - Withdrawn - aggregated with 199.52.14.0/24 (4777 2516 3356 3571 3571 3571 3571)
  199.52.101.0/24      4777 2516 3356 3571 3571 3571 3571   

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

AS3571   18 More Specifics   18 Total Advertisements   EY-AS - Ernst & Young LLP, US
    199.49.16.0/24                199.49.0.0/16
    199.49.17.0/24                199.49.0.0/16
    199.49.18.0/24                199.49.0.0/16
    199.49.19.0/24                199.49.0.0/16
    199.49.20.0/24                199.49.0.0/16
    199.49.21.0/24                199.49.0.0/16
    199.49.22.0/24                199.49.0.0/16
    199.49.23.0/24                199.49.0.0/16
    199.49.81.0/24                199.49.0.0/16
    199.52.8.0/24                 199.52.0.0/16
    199.52.9.0/24                 199.52.0.0/16
    199.52.10.0/24                199.52.0.0/16
    199.52.11.0/24                199.52.0.0/16
    199.52.12.0/24                199.52.0.0/16
    199.52.13.0/24                199.52.0.0/16
    199.52.14.0/24                199.52.0.0/16
    199.52.15.0/24                199.52.0.0/16
    199.52.101.0/24               199.52.0.0/16

Whois Entry

whois: 402332

IANA has recorded AS3571 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS3571\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:       3571
             ASName:         EY-AS
             ASHandle:       AS3571
             RegDate:        1994-04-28
             Updated:        2022-07-08
             Ref:            https://rdap.arin.net/registry/autnum/3571
             
             
             OrgName:        Ernst & Young LLP
             OrgId:          EYL-Z
             Address:        395 9th Avenue
             City:           New York
             StateProv:      NY
             PostalCode:     10001
             Country:        US
             RegDate:        2022-06-08
             Updated:        2025-05-26
             Ref:            https://rdap.arin.net/registry/entity/EYL-Z
             
             
             OrgRoutingHandle: IAM12-ARIN
             OrgRoutingName:   IP Address Management
             OrgRoutingPhone:  +1-201-872-2200 
             OrgRoutingEmail:  Internet@ey.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/IAM12-ARIN
             
             OrgTechHandle: IAM12-ARIN
             OrgTechName:   IP Address Management
             OrgTechPhone:  +1-201-872-2200 
             OrgTechEmail:  Internet@ey.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/IAM12-ARIN
             
             OrgNOCHandle: IAM12-ARIN
             OrgNOCName:   IP Address Management
             OrgNOCPhone:  +1-201-872-2200 
             OrgNOCEmail:  Internet@ey.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/IAM12-ARIN
             
             OrgAbuseHandle: IAM12-ARIN
             OrgAbuseName:   IP Address Management
             OrgAbusePhone:  +1-201-872-2200 
             OrgAbuseEmail:  Internet@ey.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/IAM12-ARIN
             
             OrgDNSHandle: IAM12-ARIN
             OrgDNSName:   IP Address Management
             OrgDNSPhone:  +1-201-872-2200 
             OrgDNSEmail:  Internet@ey.com
             OrgDNSRef:    https://rdap.arin.net/registry/entity/IAM12-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.
             #