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AS400257 City of Rocklin | IPGeolocation.io

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

City of Rocklin rocklin.ca.us

US 1 Routes

AS Data

AS400257

AS400257 – City of Rocklin

AS Number	400257
AS Name	CITY-OF-ROCKLIN-AS-01
Organization	City of Rocklin (cr-994)
Country	US
Website	rocklin.ca.us
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2021-11-29

ASN Intelligence API for production workflows

Use ASN data for AS400257 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
207.167.125.0/24	AS400257	City of Rocklin	City of Rocklin	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:       400257
ASName:         CITY-OF-ROCKLIN-AS-01
ASHandle:       AS400257
RegDate:        2021-11-29
Updated:        2022-06-03
Comment:        City of Rocklin, California, USA
Ref:            https://rdap.arin.net/registry/autnum/400257


OrgName:        City of Rocklin
OrgId:          CR-994
Address:        3970 Rocklin Road
City:           Rocklin
StateProv:      CA
PostalCode:     95677
Country:        US
RegDate:        2021-10-25
Updated:        2023-09-25
Ref:            https://rdap.arin.net/registry/entity/CR-994


OrgDNSHandle: HOSTM2186-ARIN
OrgDNSName:   Hostmaster
OrgDNSPhone:  +1-916-625-5000 
OrgDNSEmail:  hostmaster@rocklin.ca.us
OrgDNSRef:    https://rdap.arin.net/registry/entity/HOSTM2186-ARIN

OrgAbuseHandle: HOSTM2186-ARIN
OrgAbuseName:   Hostmaster
OrgAbusePhone:  +1-916-625-5000 
OrgAbuseEmail:  hostmaster@rocklin.ca.us
OrgAbuseRef:    https://rdap.arin.net/registry/entity/HOSTM2186-ARIN

OrgRoutingHandle: HOSTM2186-ARIN
OrgRoutingName:   Hostmaster
OrgRoutingPhone:  +1-916-625-5000 
OrgRoutingEmail:  hostmaster@rocklin.ca.us
OrgRoutingRef:    https://rdap.arin.net/registry/entity/HOSTM2186-ARIN

OrgNOCHandle: HOSTM2186-ARIN
OrgNOCName:   Hostmaster
OrgNOCPhone:  +1-916-625-5000 
OrgNOCEmail:  hostmaster@rocklin.ca.us
OrgNOCRef:    https://rdap.arin.net/registry/entity/HOSTM2186-ARIN

OrgTechHandle: HOSTM2186-ARIN
OrgTechName:   Hostmaster
OrgTechPhone:  +1-916-625-5000 
OrgTechEmail:  hostmaster@rocklin.ca.us
OrgTechRef:    https://rdap.arin.net/registry/entity/HOSTM2186-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" : "400257",
    "as_handle" : "AS400257",
    "as_name" : "CITY-OF-ROCKLIN-AS-01",
    "admin_contacts" : [ "HOSTM2186-ARIN" ],
    "tech_contacts" : [ "HOSTM2186-ARIN", "HOSTM2186-ARIN" ],
    "abuse_contacts" : [ "HOSTM2186-ARIN" ],
    "date_created" : "2021-11-29",
    "date_updated" : "2022-06-03",
    "source" : "https://rdap.arin.net/registry/autnum/400257"
  } ],
  "organization" : {
    "handle" : "CR-994",
    "name" : "City of Rocklin",
    "address" : [ "3970 Rocklin Road", "Rocklin", "CA", "95677", "US" ],
    "street" : "Rocklin Road",
    "city" : "Rocklin",
    "state" : "CA",
    "zip_code" : "95677",
    "country" : [ "US" ],
    "date_created" : "2021-10-25",
    "date_updated" : "2023-09-25",
    "source" : "https://rdap.arin.net/registry/entity/CR-994",
    "addressCountry" : "US"
  },
  "administrative_contacts" : [ {
    "handle" : "HOSTM2186-ARIN",
    "name" : "Hostmaster",
    "email" : [ "hostmaster@rocklin.ca.us" ],
    "phone" : [ "+1-916-625-5000" ],
    "source" : "https://rdap.arin.net/registry/entity/HOSTM2186-ARIN"
  } ],
  "technical_contacts" : [ {
    "handle" : "HOSTM2186-ARIN",
    "name" : "Hostmaster",
    "email" : [ "hostmaster@rocklin.ca.us" ],
    "phone" : [ "+1-916-625-5000" ],
    "source" : "https://rdap.arin.net/registry/entity/HOSTM2186-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "HOSTM2186-ARIN",
    "name" : "Hostmaster",
    "email" : [ "hostmaster@rocklin.ca.us" ],
    "phone" : [ "+1-916-625-5000" ],
    "source" : "https://rdap.arin.net/registry/entity/HOSTM2186-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS11404	Wave Broadband	US

Upstreams

AS Number	Description	Country
AS11404	Wave Broadband	US

Frequently Asked Questions

What is ASN AS400257?

ASN AS400257 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS400257?

AS400257 is listed under City of Rocklin.

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.