Report for 19311

Name

STEWART-1 - Stewart Title, 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 AS6447) 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.

19311 STEWART-1, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS174           COGENT-174, US
    AS7381          SRS-6-Z-7381, US
    AS812           ROGERS-COMMUNICATIONS, CA

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
23447 AS19311        ORIGIN  Originate:       2304 /20.83  Transit:          0 /0.00  STEWART-1, 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       %
21332 AS19311       STEWART-1, US                                      9      2      1      8      1  11.11%


  Prefix               AS Path                              Aggregation Suggestion
  199.253.16.0/23      49788 174 19311      + Announce - aggregate of 199.253.16.0/24 (49788 174 19311) and 199.253.17.0/24 (49788 174 19311)
  199.253.16.0/24      49788 174 19311      - Withdrawn - aggregated with 199.253.17.0/24 (49788 174 19311)
  199.253.17.0/24      49788 174 19311      - Withdrawn - aggregated with 199.253.16.0/24 (49788 174 19311)
  199.253.18.0/24      49788 174 19311        
  199.253.19.0/24      2914 7381 19311        
  199.253.20.0/24      2914 7381 19311        
  199.253.21.0/24      49788 174 19311        
  199.253.22.0/24      2914 7381 19311        
  199.253.23.0/24      3257 812 19311         
  199.253.25.0/24      49788 174 19311        

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

AS19311   7 More Specifics   7 Total Advertisements   STEWART-1, US
    199.253.16.0/24               199.253.16.0/21
    199.253.17.0/24               199.253.16.0/21
    199.253.18.0/24               199.253.16.0/21
    199.253.19.0/24               199.253.16.0/21
    199.253.20.0/24               199.253.16.0/21
    199.253.21.0/24               199.253.16.0/21
    199.253.25.0/24               199.253.24.0/23

Whois Entry

whois: 402603

IANA has recorded AS19311 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS19311\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:       19311
             ASName:         STEWART-1
             ASHandle:       AS19311
             RegDate:        2000-12-15
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/19311
             
             
             OrgName:        Stewart Title
             OrgId:          STEWAR-1
             Address:        1980 Post Oak BLVD, suite 500
             City:           Houston
             StateProv:      TX
             PostalCode:     77056-3807
             Country:        US
             RegDate:        1994-05-04
             Updated:        2011-09-24
             Ref:            https://rdap.arin.net/registry/entity/STEWAR-1
             
             
             OrgAbuseHandle: ZS61-ARIN
             OrgAbuseName:   DNS Admin
             OrgAbusePhone:  +1-713-625-8100 
             OrgAbuseEmail:  telcoops@stewart.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ZS61-ARIN
             
             OrgTechHandle: ZS61-ARIN
             OrgTechName:   DNS Admin
             OrgTechPhone:  +1-713-625-8100 
             OrgTechEmail:  telcoops@stewart.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ZS61-ARIN
             
             RTechHandle: WB264-ARIN
             RTechName:   Ballinger, Wes 
             RTechPhone:  +1-713-479-2340 
             RTechEmail:  wballing@landata.com
             RTechRef:    https://rdap.arin.net/registry/entity/WB264-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.
             #