Report for 81

Name

NCREN - MCNC, 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.

81 NCREN - MCNC

  Adjacency:    12  Upstream:     4  Downstream:     8
  Upstream Adjacent AS list
    AS174     COGENT Cogent/PSI
    AS209     ASN-QWEST - Qwest
    AS3356    LEVEL3 Level 3 Communications
    AS10490   SOUTHERN-CROSSROADS-SOX - Georgia Institute of Technology
  Downstream Adjacent AS list
    AS32417   ELONU-AS - Elon University
    AS19718   NCNI - NCNI
    AS40245   WAKE-FOREST-UNIVERSITY - Wake Forest University
    AS36850   UNC-CH - University of North Carolina
    AS11442   NCSU - North Carolina State University care of ComTech
    AS6559    NCIH - State of NC - State Telecommunications Services
    AS27446   ERCWC-ASN - Education and Research Consortium of the Western Carolinas
    AS22753   REDHAT-0 - Red Hat, Inc.

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
71    AS81     ORG+TRN Originate:    4623104 /9.86   Transit:     990720 /12.08 NCREN - MCNC

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       %
 1635 AS81    NCREN - MCNC                                 40      7      0     33      7  17.50%


  Prefix               AS Path                              Aggregation Suggestion
  128.109.0.0/16       4637 209 81            
  150.216.0.0/16       4637 209 81            
  152.4.0.0/14         4637 209 81            
  152.4.0.0/16         4637 209 81          - Withdrawn - matching aggregate 152.4.0.0/14 4637 209 81
  152.8.0.0/13         4637 209 81            
  152.11.0.0/16        4637 3356 81           
  152.16.0.0/12        4637 209 81            
  152.32.0.0/12        4637 209 81            
  152.32.0.0/13        4637 3491 10490 81     
  152.40.0.0/15        4637 3491 10490 81     
  152.42.0.0/16        4637 3491 10490 81     
  152.45.0.0/16        4637 3491 10490 81     
  152.46.0.0/15        4637 3491 10490 81     
  152.46.7.0/24        4637 174 81            
  152.48.0.0/14        4637 209 81            
  152.54.0.0/20        4637 209 81            
  192.73.4.0/24        4637 209 81            
  192.101.21.0/24      4637 209 81            
  192.101.22.0/23      4637 209 81            
  192.101.24.0/24      4637 209 81            
  192.137.210.0/24     4637 209 81            
  192.147.30.0/24      4637 209 81            
  192.154.32.0/19      4637 209 81            
  192.154.33.0/24      4637 209 81          - Withdrawn - matching aggregate 192.154.32.0/19 4637 209 81
  192.154.40.0/24      4637 209 81          - Withdrawn - matching aggregate 192.154.32.0/19 4637 209 81
  192.154.41.0/24      4637 209 81          - Withdrawn - matching aggregate 192.154.32.0/19 4637 209 81
  192.154.54.0/24      4637 209 81          - Withdrawn - matching aggregate 192.154.32.0/19 4637 209 81
  192.154.55.0/24      4637 209 81          - Withdrawn - matching aggregate 192.154.32.0/19 4637 209 81
  192.154.62.0/24      4637 209 81          - Withdrawn - matching aggregate 192.154.32.0/19 4637 209 81
  192.154.64.0/24      4637 209 81            
  192.154.95.0/24      4637 209 81            
  198.85.0.0/16        4637 209 81            
  198.86.0.0/16        4637 209 81            
  198.135.235.0/24     4637 209 81            
  198.232.64.0/19      4637 209 81            
  198.232.96.0/21      4637 209 81            
  204.69.248.0/24      4637 209 81            
  204.84.0.0/15        4637 209 81            
  204.238.30.0/24      4637 209 81            
  206.219.96.0/19      4637 209 81            

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

AS81   3 More Specifics   36 Total Advertisements   NCREN - MCNC
    152.46.7.0/24                 152.46.0.0/16
    152.54.0.0/20                 152.54.0.0/16
    192.137.210.0/24              192.137.0.0/16

Prefixes added and withdrawn by this origin AS in the past 7 days.

    + 192.154.43.0/24             Announced
    + 192.154.78.0/24             Announced

Whois Entry

whois: 402603

IANA has recorded AS81 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS81\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:       81
             ASName:         NCREN
             ASHandle:       AS81
             RegDate:        1986-08-07
             Updated:        2021-06-29
             Ref:            https://rdap.arin.net/registry/autnum/81
             
             
             OrgName:        MCNC
             OrgId:          MCNC-Z
             Address:        3021 E. Cornwallis Rd
             City:           Durham
             StateProv:      NC
             PostalCode:     27713-2852
             Country:        US
             RegDate:        2021-06-14
             Updated:        2026-02-12
             Ref:            https://rdap.arin.net/registry/entity/MCNC-Z
             
             
             OrgTechHandle: NCREN-ARIN
             OrgTechName:   NCREN Hostmaster
             OrgTechPhone:  +1-919-248-4111 
             OrgTechEmail:  hostmaster@ncren.net
             OrgTechRef:    https://rdap.arin.net/registry/entity/NCREN-ARIN
             
             OrgAbuseHandle: ABUSE3348-ARIN
             OrgAbuseName:   Abuse Contact
             OrgAbusePhone:  +1-919-248-4111 
             OrgAbuseEmail:  abuse@mcnc.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE3348-ARIN
             
             RTechHandle: NH34-ORG-ARIN
             RTechName:   NCREN Hostmaster
             RTechPhone:  +1-919-248-4111 
             RTechEmail:  hostmaster@ncren.net
             RTechRef:    https://rdap.arin.net/registry/entity/NH34-ORG-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.
             #