Organization
Alameda County
ALAMEDACOUNTYDATAPROCESSING
Registered
Jan 17, 2007
19 years ago
IPv4 Prefixes
5
16,384 addresses
IPv6 Prefixes
0
BGP Neighbours
3
3 upstream/peer · 0 downstream
Registration
AS Number AS12054 AS Name ALAMEDACOUNTYDATAPROCESSING Organization Alameda County Organization ID ACDP Address 1221 Oak Street, RM 41, ITD Data Center, Oakland, CA, 94612, United States Country United States (US) Registry ARIN Allocated Jan 17, 2007 Record Created Jan 17, 2007 Last Updated Nov 02, 2017 Status
active
WHOIS Server whois.arin.net AS Description ALAMEDACOUNTYDATAPROCESSING - Alameda County, US Remarks http://www.acgov.org Abuse Email [email protected] Abuse Phone +1-510-383-5000 IPv4 Prefixes
5 prefixes · 16,384 addresses · 1 top-level Routing data as of 2026-10-08 16:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 166.107.64.0/18 | 166.107.64.0 – 166.107.127.255 | 16,384 |
| 166.107.71.0/24 | 166.107.71.0 – 166.107.71.255 | 256 |
| 166.107.72.0/21 | 166.107.72.0 – 166.107.79.255 | 2,048 |
| 166.107.80.0/20 | 166.107.80.0 – 166.107.95.255 | 4,096 |
| 166.107.96.0/20 | 166.107.96.0 – 166.107.111.255 | 4,096 |
IPv6 Prefixes
This AS does not currently announce any IPv6 prefixes.
BGP Neighbours
3 unique neighbours · 3 upstream/peer · 0 downstream. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Upstream & peer side (3)
Raw RDAP Response
{
"endAutnum": 12054,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-07-30T18:06:54-04:00"
},
{
"eventAction": "registration",
"eventDate": "2017-11-01T11:36:48-04:00"
}
],
"handle": "NETWO8351-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NETWO8351-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12054"
},
{
"href": "https://whois.arin.net/rest/poc/NETWO8351-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12054"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Alameda County Network Services"
],
"title": "Registration Comments"
}
],
"roles": [
"administrative",
"abuse",
"technical",
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1221 Oak Street\nOakland\nCA\n94612\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Network Services"
],
[
"org",
{},
"text",
"Alameda County"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-510-383-5000"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2019-11-13T18:54:16-05:00"
},
{
"eventAction": "registration",
"eventDate": "1993-12-03T00:00:00-05:00"
}
],
"handle": "ACDP",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ACDP",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12054"
},
{
"href": "https://whois.arin.net/rest/org/ACDP",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12054"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Alameda County"
],
[
"adr",
{
"label": "1221 Oak Street\nRM 41, ITD Data Center\nOakland\nCA\n94612\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-07-30T18:06:54-04:00"
},
{
"eventAction": "registration",
"eventDate": "2017-11-01T11:36:48-04:00"
}
],
"handle": "NETWO8351-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NETWO8351-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12054"
},
{
"href": "https://whois.arin.net/rest/poc/NETWO8351-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12054"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Alameda County Network Services"
],
"title": "Registration Comments"
}
],
"roles": [
"technical",
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1221 Oak Street\nOakland\nCA\n94612\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Network Services"
],
[
"org",
{},
"text",
"Alameda County"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-510-383-5000"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2017-02-17T15:02:55-05:00"
},
{
"eventAction": "registration",
"eventDate": "2003-07-10T13:02:51-04:00"
}
],
"handle": "IHD2-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/IHD2-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12054"
},
{
"href": "https://whois.arin.net/rest/poc/IHD2-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12054"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2018-02-17"
],
"title": "Unvalidated POC"
}
],
"roles": [
"noc"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1221 Oak STreet\nRm 19\nOakland\nCA\n94612\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"ITD Help Desk"
],
[
"org",
{},
"text",
"Alameda County ITD"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-510-272-3744"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2017-11-02T17:04:51-04:00"
},
{
"eventAction": "registration",
"eventDate": "2007-01-17T15:13:59-05:00"
}
],
"handle": "AS12054",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/12054",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/12054"
},
{
"href": "https://whois.arin.net/rest/asn/AS12054",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/12054"
}
],
"name": "ALAMEDACOUNTYDATAPROCESSING",
"notices": [
{
"description": [
"By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/tou/",
"rel": "terms-of-service",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/12054"
}
],
"title": "Terms of Service"
},
{
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/12054"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"remarks": [
{
"description": [
"http://www.acgov.org"
],
"title": "Registration Comments"
}
],
"startAutnum": 12054,
"status": [
"active"
]
} Contact details of private individuals are redacted.