Report for 21519

Name

SBG-AS2 - Sinclair Broadcast Group, 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 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.

21519 FISHERCOMM - Fisher Communications

  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
12329 AS21519  ORIGIN  Originate:       2048 /21.00  Transit:          0 /0.00  FISHERCOMM - Fisher Communications

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       %
13851 AS21519 FISHERCOMM - Fisher Communications            2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  64.94.112.0/22       4637 4323 21519        
  208.73.28.0/22       4637 4323 21519        

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

AS21519   1 More Specifics   2 Total Advertisements   FISHERCOMM - Fisher Communications
    64.94.112.0/22                64.94.0.0/15

Whois Entry

whois: 402603

IANA has recorded AS21519 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS21519\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.
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             ASNumber:       21519
             ASName:         SBG-AS2
             ASHandle:       AS21519
             RegDate:        2016-03-08
             Updated:        2016-03-08
             Ref:            https://rdap.arin.net/registry/autnum/21519
             
             
             OrgName:        Sinclair Broadcast Group, Inc.
             OrgId:          SINCLA-9
             Address:        10706 Beaver Dam Rd
             City:           Cockeysville
             StateProv:      MD
             PostalCode:     21030
             Country:        US
             RegDate:        2001-06-27
             Updated:        2026-05-15
             Ref:            https://rdap.arin.net/registry/entity/SINCLA-9
             
             
             OrgTechHandle: SMIGA-ARIN
             OrgTechName:   Smigal, Matt 
             OrgTechPhone:  +1-410-891-3567 
             OrgTechEmail:  mjsmigal@sbgtv.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/SMIGA-ARIN
             
             OrgTechHandle: HOOTS6-ARIN
             OrgTechName:   Hoots, Ian 
             OrgTechPhone:  +1-410-568-2179 
             OrgTechEmail:  tihoots@sbgtv.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/HOOTS6-ARIN
             
             OrgTechHandle: JNL15-ARIN
             OrgTechName:   Laughton, John N.
             OrgTechPhone:  +1-410-568-1547 
             OrgTechEmail:  jlaughto@sbgnet.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/JNL15-ARIN
             
             OrgNOCHandle: SINCL70-ARIN
             OrgNOCName:   SinclarNOC
             OrgNOCPhone:  +1-800-228-2873 
             OrgNOCEmail:  ml-Corp-Sinclair-NOC@sbgtv.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/SINCL70-ARIN
             
             OrgAbuseHandle: ABUSE9605-ARIN
             OrgAbuseName:   Abuse
             OrgAbusePhone:  +1-410-568-1500 
             OrgAbuseEmail:  ml-sinclair-it-security@sbgtv.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE9605-ARIN
             
             OrgTechHandle: ROBER1896-ARIN
             OrgTechName:   Robertson, Omar 
             OrgTechPhone:  +1-410-891-3318 
             OrgTechEmail:  oorobertson@sbgtv.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ROBER1896-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.
             #