Report for 16857

Name

CENTEX - Central Texas Telecommunications, 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.

16857 CENTEX, US

  Adjacency:     6  Upstream:     5  Downstream:     1
  Upstream Adjacent AS list
    AS3356          LEVEL3, US
    AS13876         FIBER-64, US
    AS1299          TWELVE99 Arelion, fka Telia Carrier, SE
    AS20058         CCTC-LINK1, US
    AS46849         TLSN-TX, US
  Downstream Adjacent AS list
    AS36658         ANGELOASPRIME, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
8322  AS16857        ORG+TRN Originate:      14848 /18.14  Transit:       8192 /19.00 CENTEX, 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       %
12379 AS16857       CENTEX, US                                        27      4      1     24      3  11.11%


  Prefix               AS Path                              Aggregation Suggestion
  66.208.96.0/24       3257 174 46849 16857   
  66.208.99.0/24       3257 174 46849 16857   
  66.208.102.0/23      49788 1299 16857       
  66.208.105.0/24      3257 13876 16857       
  66.208.110.0/24      3257 13876 16857       
  69.7.80.0/24         3257 13876 16857       
  69.7.81.0/24         6939 46849 16857       
  69.7.82.0/24         3257 13876 16857       
  69.7.85.0/24         6939 46849 16857       
  69.7.88.0/22         49788 1299 16857       
  74.84.8.0/24         6939 46849 16857       
  74.84.9.0/24         3257 26744 20058 16857   
  74.84.10.0/24        3257 13876 16857       
  74.84.20.0/22        49788 1299 16857     + Announce - aggregate of 74.84.20.0/23 (49788 1299 16857) and 74.84.22.0/23 (49788 1299 16857)
  74.84.20.0/23        49788 1299 16857     - Withdrawn - aggregated with 74.84.22.0/23 (49788 1299 16857)
  74.84.22.0/23        49788 1299 16857     - Withdrawn - aggregated with 74.84.20.0/23 (49788 1299 16857)
  74.84.28.0/23        3257 26744 20058 16857   
  209.55.64.0/23       3257 13876 16857       
  209.55.64.0/24       3257 13876 16857     - Withdrawn - matching aggregate 209.55.64.0/23 3257 13876 16857
  209.55.72.0/21       49788 1299 16857       
  209.55.78.0/24       3257 13876 16857       
  209.55.96.0/21       3257 26744 20058 16857   
  209.55.104.0/21      6939 46849 16857       
  209.55.104.0/23      3257 1299 16857        
  209.55.106.0/23      3257 13876 16857       
  209.55.106.0/24      3257 13876 16857     - Withdrawn - matching aggregate 209.55.106.0/23 3257 13876 16857
  209.55.110.0/24      7018 1299 16857        
  209.55.111.0/24      3257 1299 16857        

Whois Entry

whois: 402551

IANA has recorded AS16857 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS16857\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:       16857
             ASName:         CENTEX
             ASHandle:       AS16857
             RegDate:        2000-06-20
             Updated:        2019-09-04
             Ref:            https://rdap.arin.net/registry/autnum/16857
             
             
             OrgName:        Central Texas Telecommunications
             OrgId:          CTTC-7
             Address:        PO Box 627
             City:           Goldthwaite
             StateProv:      TX
             PostalCode:     76844
             Country:        US
             RegDate:        2019-08-12
             Updated:        2026-01-27
             Ref:            https://rdap.arin.net/registry/entity/CTTC-7
             
             
             OrgTechHandle: MWG4-ARIN
             OrgTechName:   Garrison, Mitchell Wayne
             OrgTechPhone:  +1-325-656-7000 
             OrgTechEmail:  mitchg@centexnet.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/MWG4-ARIN
             
             OrgNOCHandle: SYSTE112-ARIN
             OrgNOCName:   System Administrator
             OrgNOCPhone:  +1-325-938-5611 
             OrgNOCEmail:  sysadmin@centex.net
             OrgNOCRef:    https://rdap.arin.net/registry/entity/SYSTE112-ARIN
             
             OrgAbuseHandle: SC1235-ARIN
             OrgAbuseName:   Calder, Shawn 
             OrgAbusePhone:  +1-325-938-5611 
             OrgAbuseEmail:  shawnc@centexnet.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/SC1235-ARIN
             
             OrgTechHandle: SC1235-ARIN
             OrgTechName:   Calder, Shawn 
             OrgTechPhone:  +1-325-938-5611 
             OrgTechEmail:  shawnc@centexnet.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/SC1235-ARIN
             
             OrgNOCHandle: SC1235-ARIN
             OrgNOCName:   Calder, Shawn 
             OrgNOCPhone:  +1-325-938-5611 
             OrgNOCEmail:  shawnc@centexnet.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/SC1235-ARIN
             
             OrgAbuseHandle: SYSTE112-ARIN
             OrgAbuseName:   System Administrator
             OrgAbusePhone:  +1-325-938-5611 
             OrgAbuseEmail:  sysadmin@centex.net
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/SYSTE112-ARIN
             
             OrgTechHandle: SYSTE112-ARIN
             OrgTechName:   System Administrator
             OrgTechPhone:  +1-325-938-5611 
             OrgTechEmail:  sysadmin@centex.net
             OrgTechRef:    https://rdap.arin.net/registry/entity/SYSTE112-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.
             #