What is ASN AS399628?

ASN AS399628 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS399628?

AS399628 is listed under Internet Measurement Research.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS399628 Internet Measurement Research

ASN Lookup Tool

Internet Measurement Research internetmeasurementresearch.com

US 14 Routes

AS Data

AS399628

AS399628 – Internet Measurement Research

AS Number	399628
AS Name	IMR-AS-01
Organization	Internet Measurement Research (sixma)
Country	US
Website	internetmeasurementresearch.com
Number of IPv4 Routes	7
Number of IPv6 Routes	7
ASN type	RESEARCH
Registry	ARIN
Date Allocated	2021-04-30

ASN Intelligence API for production workflows

Use ASN data for AS399628 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2620:96:a006::/48	AS399628	Internet Measurement Research	Internet Measurement Research	~1×10²⁴
2620:96:a004::/48	AS399628	Internet Measurement Research	Internet Measurement Research	~1×10²⁴
2620:96:a001::/48	AS399628	Internet Measurement Research	Internet Measurement Research	~1×10²⁴
64.95.14.0/24	AS399628	Internet Measurement Research	Internet Measurement Research	256
2620:96:a003::/48	AS399628	Internet Measurement Research	Internet Measurement Research	~1×10²⁴
64.95.9.0/24	AS399628	Internet Measurement Research	Liberty Travel	256
64.94.159.0/24	AS399628	Internet Measurement Research	Internet Measurement Research	256
209.188.108.0/24	AS399628	Internet Measurement Research	Internet Measurement Research	256
209.237.154.0/24	AS399628	Internet Measurement Research	Internet Measurement Research	256
64.94.156.0/24	AS399628	Internet Measurement Research	Internet Measurement Research	256
2620:96:a005::/48	AS399628	Internet Measurement Research	Internet Measurement Research	~1×10²⁴
2620:96:a002::/48	AS399628	Internet Measurement Research	Internet Measurement Research	~1×10²⁴
2620:96:a000::/48	AS399628	Internet Measurement Research	Internet Measurement Research	~1×10²⁴
64.94.153.0/24	AS399628	Internet Measurement Research	Internet Measurement Research	256

Raw Whois Response

#
# 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:       399628
ASName:         IMR-AS-01
ASHandle:       AS399628
RegDate:        2021-04-30
Updated:        2021-04-30
Ref:            https://rdap.arin.net/registry/autnum/399628


OrgName:        Internet Measurement Research
OrgId:          SIXMA
Address:        1390 Market Street
City:           San Francisco
StateProv:      CA
PostalCode:     94102
Country:        US
RegDate:        2021-03-26
Updated:        2021-07-23
Ref:            https://rdap.arin.net/registry/entity/SIXMA


OrgTechHandle: IMRNO-ARIN
OrgTechName:   IMR NOC
OrgTechPhone:  +1-510-397-8544 
OrgTechEmail:  noc@internetmeasurementresearch.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IMRNO-ARIN

OrgAbuseHandle: IMRAB-ARIN
OrgAbuseName:   IMR Abuse
OrgAbusePhone:  +1-510-397-8544 
OrgAbuseEmail:  network-abuse@internetmeasurementresearch.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/IMRAB-ARIN

OrgNOCHandle: IMRNO-ARIN
OrgNOCName:   IMR NOC
OrgNOCPhone:  +1-510-397-8544 
OrgNOCEmail:  noc@internetmeasurementresearch.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/IMRNO-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.
#

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "399628",
    "as_handle" : "AS399628",
    "as_name" : "IMR-AS-01",
    "tech_contacts" : [ "IMRNO-ARIN" ],
    "abuse_contacts" : [ "IMRAB-ARIN" ],
    "date_created" : "2021-04-30",
    "date_updated" : "2021-04-30",
    "source" : "https://rdap.arin.net/registry/autnum/399628"
  } ],
  "organization" : {
    "handle" : "SIXMA",
    "name" : "Internet Measurement Research",
    "address" : [ "1390 Market Street", "San Francisco", "CA", "94102", "US" ],
    "street" : "Market Street",
    "city" : "San Francisco",
    "state" : "CA",
    "zip_code" : "94102",
    "country" : [ "US" ],
    "date_created" : "2021-03-26",
    "date_updated" : "2021-07-23",
    "source" : "https://rdap.arin.net/registry/entity/SIXMA",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "IMRNO-ARIN",
    "name" : "IMR NOC",
    "email" : [ "noc@internetmeasurementresearch.com" ],
    "phone" : [ "+1-510-397-8544" ],
    "source" : "https://rdap.arin.net/registry/entity/IMRNO-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "IMRAB-ARIN",
    "name" : "IMR Abuse",
    "email" : [ "network-abuse@internetmeasurementresearch.com" ],
    "phone" : [ "+1-510-397-8544" ],
    "source" : "https://rdap.arin.net/registry/entity/IMRAB-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS6939	Hurricane Electric LLC	US

Upstreams

AS Number	Description	Country
AS6939	Hurricane Electric LLC	US

Contacts

Email Contacts

noc@internetmeasurementresearch.com

Abuse Contacts

network-abuse@internetmeasurementresearch.com