What is ASN AS210004?

ASN AS210004 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS210004?

AS210004 is listed under Stichting Internet Domeinregistratie Nederland.

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.

AS210004 Stichting Internet Domeinregistratie Nederland

ASN Lookup Tool

Stichting Internet Domeinregistratie Nederland sidn.nl

NL 4 Routes

AS Data

AS210004

AS210004 – Stichting Internet Domeinregistratie Nederland

AS Number	210004
AS Name	SIDN-ANYCAST2
Organization	Stichting Internet Domeinregistratie Nederland(org-sidn1-ripe)
Country	NL
Website	sidn.nl
Number of IPv4 Routes	2
Number of IPv6 Routes	2
ASN type	ISP
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2020-02-03

ASN Intelligence API for production workflows

Use ASN data for AS210004 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
194.0.29.0/24	AS210004	Stichting Internet Domeinregistratie Nederland	Stichting Internet Domeinregistratie Nederland	256
2001:678:8::/48	AS210004	Stichting Internet Domeinregistratie Nederland	Stichting Internet Domeinregistratie Nederland	~1×10²⁴
194.0.5.0/24	AS210004	Stichting Internet Domeinregistratie Nederland	Stichting Internet Domeinregistratie Nederland	256
2001:678:30::/48	AS210004	Stichting Internet Domeinregistratie Nederland	Stichting Internet Domeinregistratie Nederland	~1×10²⁴

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 'AS208189 - AS214345'

as-block:       AS208189 - AS214345
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:        2026-02-12T14:40:05Z
last-modified:  2026-02-12T14:40:05Z
source:         RIPE

% Information related to 'AS210004'

% Abuse contact for 'AS210004' is 'abuse@sidn.nl'

aut-num:        AS210004
as-name:        SIDN-ANYCAST2
org:            ORG-SIDN1-RIPE
import:         from AS20473 accept ANY
export:         to AS20473 announce AS210004
admin-c:        SIDN2
tech-c:         SIDN1
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SIDN-MNT
created:        2020-02-03T09:57:35Z
last-modified:  2024-07-05T06:53:56Z
source:         RIPE

organisation:   ORG-SIDN1-RIPE
org-name:       Stichting Internet Domeinregistratie Nederland
country:        NL
org-type:       LIR
address:        Postbus 5022
address:        6802 EA
address:        Arnhem
address:        NETHERLANDS
phone:          +31263525500
fax-no:         +31263525505
tech-c:         SIDN1
admin-c:        SIDN2
abuse-c:        SIDN3
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        SIDN-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SIDN-MNT
created:        2008-10-13T10:54:48Z
last-modified:  2020-12-16T12:36:23Z
source:         RIPE # Filtered

role:           SIDN netmaster
address:        Meander 501
address:        PO Box 5022
address:        6802 EA Arnhem
admin-c:        SIDN2
tech-c:         JB18540-RIPE
tech-c:         DM21506-RIPE
tech-c:         JJ6842-RIPE
nic-hdl:        SIDN1
mnt-by:         SIDN-MNT
created:        2013-01-14T11:56:25Z
last-modified:  2025-04-08T07:49:50Z
source:         RIPE # Filtered

role:           SIDN admin
address:        Meander 501
address:        PO Box 5022
address:        6802 EA Arnhem
admin-c:        LB19738-RIPE
tech-c:         SIDN1
nic-hdl:        SIDN2
mnt-by:         SIDN-MNT
created:        2013-01-14T11:53:46Z
last-modified:  2025-04-08T08:03:39Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.121.2 (BUSA)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS208189 - AS214345",
    "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" : "2026-02-12",
    "date_updated" : "2026-02-12",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS210004",
    "as_name" : "SIDN-ANYCAST2",
    "status" : "ASSIGNED",
    "import" : [ "from AS20473 accept ANY" ],
    "export" : [ "to AS20473 announce AS210004" ],
    "organization" : "ORG-SIDN1-RIPE",
    "admin_contacts" : [ "SIDN2" ],
    "tech_contacts" : [ "SIDN1" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "SIDN-MNT" ],
    "date_created" : "2020-02-03",
    "date_updated" : "2024-07-05",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-SIDN1-RIPE",
    "name" : "Stichting Internet Domeinregistratie Nederland",
    "type" : "LIR",
    "address" : [ "Postbus 5022", "6802 EA", "Arnhem", "NETHERLANDS" ],
    "city" : "Arnhem",
    "zip_code" : "6802 EA",
    "country" : [ "NL" ],
    "phone" : [ "+31263525500" ],
    "fax_no" : [ "+31263525505" ],
    "admin_contacts" : [ "SIDN2" ],
    "tech_contacts" : [ "SIDN1" ],
    "abuse_contacts" : [ "SIDN3" ],
    "mnt_ref" : [ "RIPE-NCC-HM-MNT", "SIDN-MNT" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "SIDN-MNT" ],
    "date_created" : "2008-10-13",
    "date_updated" : "2020-12-16",
    "source" : "RIPE",
    "addressCountry" : "NETHERLANDS"
  },
  "administrative_contacts" : [ {
    "handle" : "SIDN2",
    "name" : "SIDN admin",
    "address" : [ "Meander 501", "PO Box 5022", "6802 EA Arnhem" ],
    "city" : "Arnhem",
    "zip_code" : "6802 EA",
    "admin_contacts" : [ "LB19738-RIPE" ],
    "tech_contacts" : [ "SIDN1" ],
    "mnt_by" : [ "SIDN-MNT" ],
    "date_created" : "2013-01-14",
    "date_updated" : "2025-04-08",
    "source" : "RIPE"
  } ],
  "technical_contacts" : [ {
    "handle" : "SIDN1",
    "name" : "SIDN netmaster",
    "address" : [ "Meander 501", "PO Box 5022", "6802 EA Arnhem" ],
    "city" : "Arnhem",
    "zip_code" : "6802 EA",
    "admin_contacts" : [ "SIDN2" ],
    "tech_contacts" : [ "JB18540-RIPE", "DM21506-RIPE", "JJ6842-RIPE" ],
    "mnt_by" : [ "SIDN-MNT" ],
    "date_created" : "2013-01-14",
    "date_updated" : "2025-04-08",
    "source" : "RIPE"
  } ]
}

Peers

AS Number	Description	Country
AS20473	The Constant Company, LLC	US

Upstreams

AS Number	Description	Country
AS20473	The Constant Company, LLC	US