Report for 27457

Name

SLG-2 - SL Green Realty Corp, 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 AS4637) 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.

27457 LANDATA-TECHNOLOGIES - Landata Technologies, Inc.

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS4323    TWTC - Time Warner Telecom, Inc.

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
22108 AS27457  ORIGIN  Originate:        256 /24.00  Transit:          0 /0.00  LANDATA-TECHNOLOGIES - Landata Technologies, Inc.

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       %
16894 AS27457 LANDATA-TECHNOLOGIES - Landata Technolog      1      0      0      1      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  206.104.239.0/24     4637 4323 27457        

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

AS27457   1 More Specifics   1 Total Advertisements   LANDATA-TECHNOLOGIES - Landata Technologies, Inc.
    206.104.239.0/24              206.104.0.0/14

Whois Entry

whois: 402603

IANA has recorded AS27457 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS27457\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:       27457
             ASName:         SLG-2
             ASHandle:       AS27457
             RegDate:        2017-10-27
             Updated:        2017-10-27
             Ref:            https://rdap.arin.net/registry/autnum/27457
             
             
             OrgName:        SL Green Realty Corp
             OrgId:          SGRC-1
             Address:        420 Lexington Ave 18th Floor
             City:           NY
             StateProv:      NY
             PostalCode:     10170
             Country:        US
             RegDate:        2008-04-25
             Updated:        2024-11-25
             Ref:            https://rdap.arin.net/registry/entity/SGRC-1
             
             
             OrgTechHandle: ENGIN81-ARIN
             OrgTechName:   Engineering
             OrgTechPhone:  +1-212-216-1644 
             OrgTechEmail:  john.mathews@slgreen.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ENGIN81-ARIN
             
             OrgAbuseHandle: ENGIN81-ARIN
             OrgAbuseName:   Engineering
             OrgAbusePhone:  +1-212-216-1644 
             OrgAbuseEmail:  john.mathews@slgreen.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ENGIN81-ARIN
             
             OrgNOCHandle: ENGIN81-ARIN
             OrgNOCName:   Engineering
             OrgNOCPhone:  +1-212-216-1644 
             OrgNOCEmail:  john.mathews@slgreen.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/ENGIN81-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.
             #