Report for 31770

Name

CMMC-I2 - Ann & Robert H. Lurie Children's Hospital of Chicago, 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.

31770 CMMC-I2, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS13499         ASCENTRALCOLO, US
    AS6461          ZAYO-6461, US
    AS22335         MREN, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
23510 AS31770        ORIGIN  Originate:       2304 /20.83  Transit:          0 /0.00  CMMC-I2, 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       %
16534 AS31770       CMMC-I2, US                                        9      4      2      7      2  22.22%


  Prefix               AS Path                              Aggregation Suggestion
  192.206.211.0/24     6939 1828 13499 31770 31770   
  192.206.212.0/24     6939 1828 13499 31770 31770   
  192.206.216.0/24     11537 22335 31770      
  199.125.16.0/23      6939 1828 13499 31770 31770 + Announce - aggregate of 199.125.16.0/24 (6939 1828 13499 31770 31770) and 199.125.17.0/24 (6939 1828 13499 31770 31770)
  199.125.16.0/24      6939 1828 13499 31770 31770 - Withdrawn - aggregated with 199.125.17.0/24 (6939 1828 13499 31770 31770)
  199.125.17.0/24      6939 1828 13499 31770 31770 - Withdrawn - aggregated with 199.125.16.0/24 (6939 1828 13499 31770 31770)
  199.125.18.0/24      6939 1828 13499 31770 31770   
  199.125.20.0/24      6939 1828 13499 31770 31770   
  199.125.30.0/23      7018 6461 31770      + Announce - aggregate of 199.125.30.0/24 (7018 6461 31770) and 199.125.31.0/24 (7018 6461 31770)
  199.125.30.0/24      7018 6461 31770      - Withdrawn - aggregated with 199.125.31.0/24 (7018 6461 31770)
  199.125.31.0/24      7018 6461 31770      - Withdrawn - aggregated with 199.125.30.0/24 (7018 6461 31770)

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

AS31770   6 More Specifics   9 Total Advertisements   CMMC-I2, US
    199.125.16.0/24               199.125.16.0/20
    199.125.17.0/24               199.125.16.0/20
    199.125.18.0/24               199.125.16.0/20
    199.125.20.0/24               199.125.16.0/20
    199.125.30.0/24               199.125.16.0/20
    199.125.31.0/24               199.125.16.0/20

Whois Entry

whois: 402549

IANA has recorded AS31770 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS31770\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:       31770
             ASName:         CMMC-I2
             ASHandle:       AS31770
             RegDate:        2003-12-17
             Updated:        2003-12-17
             Ref:            https://rdap.arin.net/registry/autnum/31770
             
             
             OrgName:        Ann & Robert H. Lurie Children's Hospital of Chicago
             OrgId:          CMMC
             Address:        225 East Chicago Avenue
             City:           Chicago
             StateProv:      IL
             PostalCode:     60611
             Country:        US
             RegDate:        1992-09-17
             Updated:        2014-05-13
             Ref:            https://rdap.arin.net/registry/entity/CMMC
             
             
             OrgTechHandle: POC1-ARIN
             OrgTechName:   POC
             OrgTechPhone:  +1-312-227-4000 
             OrgTechEmail:  poc@luriechildrens.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/POC1-ARIN
             
             OrgAbuseHandle: POC1-ARIN
             OrgAbuseName:   POC
             OrgAbusePhone:  +1-312-227-4000 
             OrgAbuseEmail:  poc@luriechildrens.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/POC1-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.
             #