What is ASN AS203219?

ASN AS203219 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS203219?

AS203219 is listed under Yahoo UK Limited.

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.

AS203219 Yahoo UK Limited | IPGeolocation.io

ASN Lookup Tool

Yahoo UK Limited verizonmedia.com

GB 4 Routes

AS Data

AS203219

AS203219 – Yahoo UK Limited

AS Number	203219
AS Name	YAHOO-AMA
Organization	Yahoo UK Limited (org-ye1-ripe)
Country	GB
Website	verizonmedia.com
Number of IPv4 Routes	3
Number of IPv6 Routes	1
ASN type	BUSINESS
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2016-03-04

ASN Intelligence API for production workflows

Use ASN data for AS203219 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2a00:1288:84::/48	AS203219	Yahoo UK Limited	Yahoo UK Limited	~1×10²⁴
87.248.117.0/24	AS203219	Yahoo UK Limited	Yahoo Europe	256
87.248.113.0/24	AS203219	Yahoo UK Limited	Yahoo Europe	256
87.248.116.0/24	AS203219	Yahoo UK Limited	Yahoo Europe	256

Raw Whois Response

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to 'AS203113 - AS203887'

as-block:       AS203113 - AS203887
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2024-11-12T15:22:00Z
last-modified:  2024-11-12T15:22:00Z
source:         RIPE

% Information related to 'AS203219'

% Abuse contact for 'AS203219' is 'rir-abuse@verizonmedia.com'

aut-num:        AS203219
as-name:        YAHOO-AMA
org:            ORG-YE1-RIPE
admin-c:        IG1154-RIPE
tech-c:         LV3435-RIPE
import:         from AS3356 accept any
export:         to AS3356 announce AS203219
import:         from AS2828 accept any
export:         to AS2828 announce AS203219
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         YAHOO-MNT
created:        2016-03-04T14:28:48Z
last-modified:  2018-09-04T11:45:47Z
source:         RIPE

organisation:   ORG-YE1-RIPE
org-name:       Yahoo-UK Limited
country:        GB
reg-nr:         03462696
org-type:       LIR
address:        North Wall Quay 5-7 Point Village
address:        D01
address:        Dublin
address:        IRELAND
phone:          +442071311495
fax-no:         +14083497102
tech-c:         LV3435-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        YAHOO-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         YAHOO-MNT
admin-c:        NA1231-RIPE
admin-c:        IG1154-RIPE
admin-c:        LV3435-RIPE
abuse-c:        NA4112-RIPE
created:        2004-04-17T12:24:22Z
last-modified:  2026-05-15T19:36:05Z
source:         RIPE # Filtered

person:         Igor Gashinsky
address:        45 W. 18th St New York, NY 10001
address:
phone:          +1 (917) 807-2213
nic-hdl:        IG1154-RIPE
created:        2007-07-30T11:34:47Z
last-modified:  2016-04-06T22:06:35Z
mnt-by:         RIPE-NCC-LOCKED-MNT
source:         RIPE

person:         Lorena Villanueva
address:        Yahoo! Inc.
address:        391 San Antonio Rd
address:        Mountain View, CA 94040
phone:          +1-408-349-3300
nic-hdl:        LV3435-RIPE
mnt-by:         vlorena2112
created:        2012-12-18T04:45:33Z
last-modified:  2026-01-30T21:04:21Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.122.1 (ABERDEEN)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS203113 - AS203887",
    "description" : [ "RIPE NCC ASN block" ],
    "remarks" : [ "These AS Numbers are assigned to network operators in the RIPE NCC service region." ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT" ],
    "date_created" : "2024-11-12",
    "date_updated" : "2024-11-12",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS203219",
    "as_name" : "YAHOO-AMA",
    "status" : "ASSIGNED",
    "import" : [ "from AS3356 accept any", "from AS2828 accept any" ],
    "export" : [ "to AS3356 announce AS203219", "to AS2828 announce AS203219" ],
    "organization" : "ORG-YE1-RIPE",
    "admin_contacts" : [ "IG1154-RIPE" ],
    "tech_contacts" : [ "LV3435-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "YAHOO-MNT" ],
    "date_created" : "2016-03-04",
    "date_updated" : "2018-09-04",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-YE1-RIPE",
    "name" : "Yahoo-UK Limited",
    "type" : "LIR",
    "address" : [ "North Wall Quay 5-7 Point Village", "D01", "Dublin", "IRELAND" ],
    "street" : "North Wall Quay 5-7 Point Village D01",
    "city" : "Dublin",
    "country" : [ "GB" ],
    "phone" : [ "+442071311495" ],
    "fax_no" : [ "+14083497102" ],
    "admin_contacts" : [ "NA1231-RIPE", "IG1154-RIPE", "LV3435-RIPE" ],
    "tech_contacts" : [ "LV3435-RIPE" ],
    "abuse_contacts" : [ "NA4112-RIPE" ],
    "mnt_ref" : [ "RIPE-NCC-HM-MNT", "YAHOO-MNT" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "YAHOO-MNT" ],
    "date_created" : "2004-04-17",
    "date_updated" : "2026-05-15",
    "source" : "RIPE",
    "addressCountry" : "IRELAND"
  },
  "administrative_contacts" : [ {
    "handle" : "IG1154-RIPE",
    "name" : "Igor Gashinsky",
    "address" : [ "45 W. 18th St New York, NY 10001" ],
    "street" : "W. 18th St",
    "city" : "New York",
    "state" : "NY",
    "zip_code" : "10001",
    "phone" : [ "+1 (917) 807-2213" ],
    "mnt_by" : [ "RIPE-NCC-LOCKED-MNT" ],
    "date_created" : "2007-07-30",
    "date_updated" : "2016-04-06",
    "source" : "RIPE"
  } ],
  "technical_contacts" : [ {
    "handle" : "LV3435-RIPE",
    "name" : "Lorena Villanueva",
    "address" : [ "Yahoo! Inc.", "391 San Antonio Rd", "Mountain View, CA 94040" ],
    "street" : "San Antonio Rd",
    "city" : "Mountain View",
    "state" : "CA",
    "zip_code" : "94040",
    "phone" : [ "+1-408-349-3300" ],
    "mnt_by" : [ "vlorena2112" ],
    "date_created" : "2012-12-18",
    "date_updated" : "2026-01-30",
    "source" : "RIPE"
  } ]
}

Peers

AS Number	Description	Country
AS10310	Yahoo Holdings Inc.	US
AS2828	Verizon Business	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS10310	Yahoo Holdings Inc.	US