ASN AS16434 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS16434?

AS16434 is listed under Hitachi Cable Manchester, INC.

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?

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AS16434 Hitachi Cable Manchester, INC

ASN Lookup Tool

Hitachi Cable Manchester, INC mainstream.net

US 1 Routes

AS Data

AS16434

AS16434 – Hitachi Cable Manchester, INC

AS Number	16434
AS Name	HCM
Organization	Hitachi Cable Manchester, INC (hcm-45)
Country	US
Website	mainstream.net
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2010-12-16

ASN Intelligence API for production workflows

Use ASN data for AS16434 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
204.138.167.0/24	AS16434	Hitachi Cable Manchester, INC	Hitachi Cable Manchester, INC	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:       16434
ASName:         HCM
ASHandle:       AS16434
RegDate:        2010-12-16
Updated:        2012-02-24
Ref:            https://rdap.arin.net/registry/autnum/16434


OrgName:        Hitachi Cable Manchester, INC
OrgId:          HCM-45
Address:        900 Holt Ave
City:           Manchester
StateProv:      NH
PostalCode:     03109
Country:        US
RegDate:        2010-11-18
Updated:        2018-12-17
Comment:        NOC is Manned from 9AM to 5PM Eastern Time
Ref:            https://rdap.arin.net/registry/entity/HCM-45


OrgNOCHandle: NOC11645-ARIN
OrgNOCName:   NOC
OrgNOCPhone:  +1-603-966-4607 
OrgNOCEmail:  noc-alert@mainstream.net
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC11645-ARIN

OrgAbuseHandle: NOC11645-ARIN
OrgAbuseName:   NOC
OrgAbusePhone:  +1-603-966-4607 
OrgAbuseEmail:  noc-alert@mainstream.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NOC11645-ARIN

OrgTechHandle: SCP14-ARIN
OrgTechName:   Peterson, Steven Craig
OrgTechPhone:  +1-603-966-4607 
OrgTechEmail:  scp@mainstream.net
OrgTechRef:    https://rdap.arin.net/registry/entity/SCP14-ARIN

OrgTechHandle: CP38-ARIN
OrgTechName:   Peterson, Craig R.
OrgTechPhone:  +1-617-500-3221 
OrgTechEmail:  craig@mainstream.net
OrgTechRef:    https://rdap.arin.net/registry/entity/CP38-ARIN

RNOCHandle: NOC11645-ARIN
RNOCName:   NOC
RNOCPhone:  +1-603-966-4607 
RNOCEmail:  noc-alert@mainstream.net
RNOCRef:    https://rdap.arin.net/registry/entity/NOC11645-ARIN

RTechHandle: SCP14-ARIN
RTechName:   Peterson, Steven Craig
RTechPhone:  +1-603-966-4607 
RTechEmail:  scp@mainstream.net
RTechRef:    https://rdap.arin.net/registry/entity/SCP14-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" : "16434",
    "as_handle" : "AS16434",
    "as_name" : "HCM",
    "tech_contacts" : [ "SCP14-ARIN", "CP38-ARIN", "SCP14-ARIN" ],
    "abuse_contacts" : [ "NOC11645-ARIN" ],
    "date_created" : "2010-12-16",
    "date_updated" : "2012-02-24",
    "source" : "https://rdap.arin.net/registry/autnum/16434"
  } ],
  "organization" : {
    "handle" : "HCM-45",
    "name" : "Hitachi Cable Manchester, INC",
    "address" : [ "900 Holt Ave", "Manchester", "NH", "03109", "US" ],
    "street" : "Holt Ave",
    "city" : "Manchester",
    "state" : "NH",
    "zip_code" : "03109",
    "country" : [ "US" ],
    "date_created" : "2010-11-18",
    "date_updated" : "2018-12-17",
    "source" : "https://rdap.arin.net/registry/entity/HCM-45",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "SCP14-ARIN",
    "name" : "Peterson, Steven Craig",
    "email" : [ "scp@mainstream.net" ],
    "phone" : [ "+1-603-966-4607" ],
    "source" : "https://rdap.arin.net/registry/entity/SCP14-ARIN"
  }, {
    "handle" : "CP38-ARIN",
    "name" : "Peterson, Craig R.",
    "email" : [ "craig@mainstream.net" ],
    "phone" : [ "+1-617-500-3221" ],
    "source" : "https://rdap.arin.net/registry/entity/CP38-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NOC11645-ARIN",
    "name" : "NOC",
    "email" : [ "noc-alert@mainstream.net" ],
    "phone" : [ "+1-603-966-4607" ],
    "source" : "https://rdap.arin.net/registry/entity/NOC11645-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS13536	FirstLight Networks, LLC	US
AS7015	Comcast Cable Communications, LLC	US
AS13536	FirstLight Fiber, Inc.	US

Upstreams

AS Number	Description	Country
AS13536	FirstLight Networks, LLC	US
AS7015	Comcast Cable Communications, LLC	US