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AS57518 Terrence de Kat | 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.

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Terrence de Kat de.kat.org

NL 0 Routes

AS Data

AS57518

AS57518 – Terrence de Kat

AS Number	57518
AS Name	RBRS-AS2
Organization	Terrence de Kat(org-tk138-ripe)
Country	NL
Website	de.kat.org
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	BUSINESS
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2021-06-14

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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 'AS57370 - AS57973'

as-block:       AS57370 - AS57973
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:        2025-04-24T14:15:44Z
last-modified:  2025-04-24T14:15:44Z
source:         RIPE

% Information related to 'AS57518'

% Abuse contact for 'AS57518' is 'abuse@de.kat.org'

aut-num:        AS57518
as-name:        RBRS-AS2
org:            ORG-TK138-RIPE
import:         from AS61161 accept ANY
export:         to AS61161 announce AS57518
import:         from AS9504 accept ANY
export:         to AS9504 announce AS57518
import:         from AS49685 accept ANY
export:         to AS49685 announce AS57518
admin-c:        TPK-RIPE
tech-c:         TPK-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         KAT-MNT
created:        2021-06-14T06:29:08Z
last-modified:  2025-10-31T09:46:53Z
source:         RIPE

organisation:   ORG-TK138-RIPE
org-name:       Terrence de Kat
country:        NL
org-type:       LIR
address:        PO Box 1050
address:        1200BB
address:        Hilversum
address:        NETHERLANDS
phone:          +31881415926
admin-c:        TPK-RIPE
tech-c:         TPK-RIPE
abuse-c:        KTAB-RIPE
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         KAT-MNT
created:        2021-07-02T10:11:48Z
last-modified:  2025-09-09T06:22:37Z
source:         RIPE # Filtered
fax-no:         +31881415927
mnt-ref:        KAT-MNT

person:         T.P. de Kat
nic-hdl:        TPK-RIPE
org:            ORG-TK138-RIPE
address:        PO Box 1050
address:        1200BB Hilversum
address:        NETHERLANDS
phone:          +31881415926
fax-no:         +31881415927
remarks:        *
remarks:        * ^-^-^-@@-^-^-^   don't fail
remarks:        *      (..)-----;        to mail
remarks:        *         ||---||            abuse@darkness-reigns.net
remarks:        *         ^^   ^^            it angers the abuse moose
remarks:        *
remarks:        IRC: raphidae@EFNet
mnt-by:         KAT-MNT
created:        2011-06-09T17:45:51Z
last-modified:  2026-03-20T18:53:03Z
source:         RIPE # Filtered

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

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS57370 - AS57973",
    "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" : "2025-04-24",
    "date_updated" : "2025-04-24",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS57518",
    "as_name" : "RBRS-AS2",
    "status" : "ASSIGNED",
    "import" : [ "from AS61161 accept ANY", "from AS9504 accept ANY", "from AS49685 accept ANY" ],
    "export" : [ "to AS61161 announce AS57518", "to AS9504 announce AS57518", "to AS49685 announce AS57518" ],
    "organization" : "ORG-TK138-RIPE",
    "admin_contacts" : [ "TPK-RIPE" ],
    "tech_contacts" : [ "TPK-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "KAT-MNT" ],
    "date_created" : "2021-06-14",
    "date_updated" : "2025-10-31",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-TK138-RIPE",
    "name" : "Terrence de Kat",
    "type" : "LIR",
    "address" : [ "PO Box 1050", "1200BB", "Hilversum", "NETHERLANDS" ],
    "city" : "Hilversum",
    "zip_code" : "1200BB",
    "country" : [ "NL" ],
    "phone" : [ "+31881415926" ],
    "fax_no" : [ "+31881415927" ],
    "admin_contacts" : [ "TPK-RIPE" ],
    "tech_contacts" : [ "TPK-RIPE" ],
    "abuse_contacts" : [ "KTAB-RIPE" ],
    "mnt_ref" : [ "KAT-MNT" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "KAT-MNT" ],
    "date_created" : "2021-07-02",
    "date_updated" : "2025-09-09",
    "source" : "RIPE",
    "addressCountry" : "NETHERLANDS"
  },
  "administrative_contacts" : [ {
    "handle" : "TPK-RIPE",
    "name" : "T.P. de Kat",
    "address" : [ "PO Box 1050", "1200BB Hilversum", "NETHERLANDS" ],
    "city" : "Hilversum",
    "zip_code" : "1200BB",
    "country" : "NETHERLANDS",
    "phone" : [ "+31881415926" ],
    "fax_no" : [ "+31881415927" ],
    "organizations" : [ "ORG-TK138-RIPE" ],
    "remarks" : [ "*", "* ^-^-^-@@-^-^-^   don't fail", "*      (..)-----;        to mail", "*         ||---||            abuse@darkness-reigns.net", "*         ^^   ^^            it angers the abuse moose", "*", "IRC: raphidae@EFNet" ],
    "mnt_by" : [ "KAT-MNT" ],
    "date_created" : "2011-06-09",
    "date_updated" : "2026-03-20",
    "source" : "RIPE",
    "addressCountry" : "NETHERLANDS"
  } ],
  "technical_contacts" : [ {
    "handle" : "TPK-RIPE",
    "name" : "T.P. de Kat",
    "address" : [ "PO Box 1050", "1200BB Hilversum", "NETHERLANDS" ],
    "city" : "Hilversum",
    "zip_code" : "1200BB",
    "country" : "NETHERLANDS",
    "phone" : [ "+31881415926" ],
    "fax_no" : [ "+31881415927" ],
    "organizations" : [ "ORG-TK138-RIPE" ],
    "remarks" : [ "*", "* ^-^-^-@@-^-^-^   don't fail", "*      (..)-----;        to mail", "*         ||---||            abuse@darkness-reigns.net", "*         ^^   ^^            it angers the abuse moose", "*", "IRC: raphidae@EFNet" ],
    "mnt_by" : [ "KAT-MNT" ],
    "date_created" : "2011-06-09",
    "date_updated" : "2026-03-20",
    "source" : "RIPE",
    "addressCountry" : "NETHERLANDS"
  } ]
}

Peers

AS Number	Description	Country
AS49685	Signet B.V.	NL
AS9504	Asia Pacific Network Information Centre	AU
AS61161	Darkness Reigns Holding B.V.	NL

Frequently Asked Questions

What is ASN AS57518?

ASN AS57518 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS57518?

AS57518 is listed under Terrence de Kat.

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.

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ASN Summary

AS57518 – Terrence de Kat

ASN Intelligence API for production workflows

Raw Whois Response

Parsed Whois Response

Peers

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