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.

AS204018 ENTANET International Limited

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

ENTANET International Limited enta.net

GB 1 Routes

AS Data

AS204018

AS204018 – ENTANET International Limited

AS Number	204018
AS Name	Cityfibre
Organization	ENTANET International Limited (org-ea52-ripe)
Country	GB
Website	enta.net
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	ISP
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2015-09-14

ASN Intelligence API for production workflows

Use ASN data for AS204018 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
156.67.240.0/24	AS204018	ENTANET International Limited	hul cust uu net	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 'AS203940 - AS205662'

as-block:       AS203940 - AS205662
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:        2026-03-05T15:29:31Z
last-modified:  2026-03-05T15:29:31Z
source:         RIPE

% Information related to 'AS204018'

% Abuse contact for 'AS204018' is 'abuse@enta.net'

aut-num:        AS204018
as-name:        Cityfibre
org:            ORG-EA52-RIPE
import:         from AS3356 accept ANY
export:         to AS3356 announce AS204018
import:         from AS174 accept ANY
export:         to AS174 announce AS204018
import:         from AS24931 accept ANY
export:         to AS24931 announce AS204018
import:         from AS19693 accept ANY
export:         to AS19693 announce AS204018
admin-c:        EH1633-RIPE
tech-c:         EH1633-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ENTANET-MNT
created:        2015-09-14T13:56:04Z
last-modified:  2026-07-14T14:51:18Z
source:         RIPE

organisation:   ORG-EA52-RIPE
org-name:       ENTANET International Limited
country:        GB
reg-nr:         03274237
org-type:       LIR
address:        Partnership House, Hollinswood Road, Central Park
address:        TF2 9TZ
address:        Telford
address:        UNITED KINGDOM
phone:          +44 3331019670
mnt-ref:        ENTANET-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         ENTANET-MNT
admin-c:        MING-RIPE
admin-c:        MH20631-RIPE
admin-c:        MY1421-RIPE
admin-c:        SL1494-RIPE
abuse-c:        EAC44-RIPE
created:        2004-04-17T12:14:14Z
last-modified:  2026-05-13T07:29:55Z
source:         RIPE # Filtered

role:           Entanet Hostmaster
address:
admin-c:        EH1633-RIPE
tech-c:         EH1633-RIPE
nic-hdl:        EH1633-RIPE
mnt-by:         ENTANET-MNT
created:        2010-09-15T10:33:58Z
last-modified:  2010-09-15T10:38:26Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.123 (BUSA)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS203940 - AS205662",
    "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" : "2026-03-05",
    "date_updated" : "2026-03-05",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS204018",
    "as_name" : "Cityfibre",
    "status" : "ASSIGNED",
    "import" : [ "from AS3356 accept ANY", "from AS174 accept ANY", "from AS24931 accept ANY", "from AS19693 accept ANY" ],
    "export" : [ "to AS3356 announce AS204018", "to AS174 announce AS204018", "to AS24931 announce AS204018", "to AS19693 announce AS204018" ],
    "organization" : "ORG-EA52-RIPE",
    "admin_contacts" : [ "EH1633-RIPE" ],
    "tech_contacts" : [ "EH1633-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "ENTANET-MNT" ],
    "date_created" : "2015-09-14",
    "date_updated" : "2026-07-14",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-EA52-RIPE",
    "name" : "ENTANET International Limited",
    "type" : "LIR",
    "address" : [ "Partnership House, Hollinswood Road, Central Park", "TF2 9TZ", "Telford", "UNITED KINGDOM" ],
    "street" : "Hollinswood Road",
    "city" : "Telford",
    "zip_code" : "TF2 9TZ",
    "country" : [ "GB" ],
    "phone" : [ "+44 3331019670" ],
    "admin_contacts" : [ "MING-RIPE", "MH20631-RIPE", "MY1421-RIPE", "SL1494-RIPE" ],
    "abuse_contacts" : [ "EAC44-RIPE" ],
    "mnt_ref" : [ "ENTANET-MNT", "RIPE-NCC-HM-MNT" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "ENTANET-MNT" ],
    "date_created" : "2004-04-17",
    "date_updated" : "2026-05-13",
    "source" : "RIPE",
    "addressCountry" : "UNITED KINGDOM"
  },
  "administrative_contacts" : [ {
    "handle" : "EH1633-RIPE",
    "name" : "Entanet Hostmaster",
    "admin_contacts" : [ "EH1633-RIPE" ],
    "tech_contacts" : [ "EH1633-RIPE" ],
    "mnt_by" : [ "ENTANET-MNT" ],
    "date_created" : "2010-09-15",
    "date_updated" : "2010-09-15",
    "source" : "RIPE"
  } ],
  "technical_contacts" : [ {
    "handle" : "EH1633-RIPE",
    "name" : "Entanet Hostmaster",
    "admin_contacts" : [ "EH1633-RIPE" ],
    "tech_contacts" : [ "EH1633-RIPE" ],
    "mnt_by" : [ "ENTANET-MNT" ],
    "date_created" : "2010-09-15",
    "date_updated" : "2010-09-15",
    "source" : "RIPE"
  } ]
}

Peers

AS Number	Description	Country
AS19693	Centrilogic, Inc.	US
AS1000	LINK AMERICAN	US
AS24931	RIPE Network Coordination Centre	NL
AS3356	Level 3 Parent, LLC	US
AS174	Cogent Communications, LLC	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US

Frequently Asked Questions

What is ASN AS204018?

ASN AS204018 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS204018?

AS204018 is listed under ENTANET International Limited.

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.