Report for 27

Name

UMDNET - University of Maryland, 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 AS2.0) 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.

27 UMDNET - University of Maryland, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS10886         MAX-GIGAPOP - University of Maryland, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1778  AS27           ORIGIN  Originate:     134656 /14.96  Transit:          0 /0.00  UMDNET - University of Maryland, 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       %
19923 AS27          UMDNET - University of Maryland, US                5      1      0      4      1  20.00%


  Prefix               AS Path                              Aggregation Suggestion
  128.8.0.0/16         4777 2497 174 10886 27   
  129.2.0.0/16         4777 2497 174 10886 27   
  192.54.94.0/23       4777 2497 3257 10886 27   
  192.54.96.0/21       4777 2497 3257 10886 27   
  192.54.100.0/22      4777 2497 3257 10886 27 - Withdrawn - matching aggregate 192.54.96.0/21 4777 2497 3257 10886 27

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

AS27   1 More Specifics   5 Total Advertisements   UMDNET - University of Maryland, US
    192.54.100.0/22               192.54.96.0/21

Whois Entry

whois: 402332

IANA has recorded AS27 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS27\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:       27
             ASName:         UMDNET
             ASHandle:       AS27
             RegDate:        1984-08-28
             Updated:        2014-02-18
             Ref:            https://rdap.arin.net/registry/autnum/27
             
             
             OrgName:        University of Maryland
             OrgId:          UNIVER-262-Z
             Address:        Office of Information Technology
             Address:        Patuxent Building
             City:           College Park
             StateProv:      MD
             PostalCode:     20742
             Country:        US
             RegDate:        2010-01-06
             Updated:        2010-01-06
             Ref:            https://rdap.arin.net/registry/entity/UNIVER-262-Z
             
             
             OrgAbuseHandle: UARA-ARIN
             OrgAbuseName:   UMD Abuse Role Account
             OrgAbusePhone:  +1-301-405-8787 
             OrgAbuseEmail:  abuse@umd.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/UARA-ARIN
             
             OrgTechHandle: UM-ORG-ARIN
             OrgTechName:   UMD DNS Admin Role Account
             OrgTechPhone:  +1-301-405-9955 
             OrgTechEmail:  dnsadmin@umd.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/UM-ORG-ARIN
             
             RNOCHandle: UM-ORG-ARIN
             RNOCName:   UMD DNS Admin Role Account
             RNOCPhone:  +1-301-405-9955 
             RNOCEmail:  dnsadmin@umd.edu
             RNOCRef:    https://rdap.arin.net/registry/entity/UM-ORG-ARIN
             
             RAbuseHandle: UM-ORG-ARIN
             RAbuseName:   UMD DNS Admin Role Account
             RAbusePhone:  +1-301-405-9955 
             RAbuseEmail:  dnsadmin@umd.edu
             RAbuseRef:    https://rdap.arin.net/registry/entity/UM-ORG-ARIN
             
             RTechHandle: UM-ORG-ARIN
             RTechName:   UMD DNS Admin Role Account
             RTechPhone:  +1-301-405-9955 
             RTechEmail:  dnsadmin@umd.edu
             RTechRef:    https://rdap.arin.net/registry/entity/UM-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.
             #