ASN AS18400 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18400?

AS18400 is listed under Xtreme Networks 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.

AS18400 Xtreme Networks Limited

Xtreme Networks Limited xtreme.nz

NZ 9 Routes

AS Data

AS18400

AS18400 – Xtreme Networks Limited

AS Number	18400
AS Name	XTREME-AS-AP
Organization	Xtreme Networks Limited(org-xnl1-ap)
Country	NZ
Website	xtreme.nz
Number of IPv4 Routes	7
Number of IPv6 Routes	2
ASN type	BUSINESS
Registry	APNIC
Date Allocated	N/A

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
103.140.60.0/24	AS18400	Xtreme Networks Limited	Harbour City Security Limited	256
103.11.241.0/24	AS18400	Xtreme Networks Limited	Xtreme Customer Addresses	256
103.11.240.0/24	AS18400	Xtreme Networks Limited	Xtreme Customer Addresses	256
202.36.162.0/24	AS18400	Xtreme Networks Limited	Royal Society of New Zealand	256
103.35.88.0/24	AS18400	Xtreme Networks Limited	Lantech Limited	256
203.171.32.0/19	AS18400	Xtreme Networks Limited	Xtreme Core Wellington Network	8192
2401:7c00:1000::/36	AS18400	Xtreme Networks Limited	Xtreme Networks Limited	~5×10²⁷
103.11.242.0/23	AS18400	Xtreme Networks Limited	Xtreme Networks Limited	512
2401:7c00::/36	AS18400	Xtreme Networks Limited	Xtreme Networks Limited	~5×10²⁷

Raw Whois Response

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS17653 - AS18431'

as-block:       AS17653 - AS18431
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2019-01-08T23:19:07Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS18400'

% Abuse contact for 'AS18400' is 'abuse@xtreme.net.nz'

aut-num:        AS18400
as-name:        XTREME-AS-AP
descr:          Xtreme Networks Limited
descr:          P.O Box 13485
descr:          Johnsonville
descr:          Wellington
country:        NZ
import:         from AS9439 accept ANY
import:         from AS7714 action pref=100; accept ANY
import:         from AS9901 action pref=90; accept ANY
export:         to AS9439 announce AS18400
export:         to AS7714 announce AS18400
export:         to AS9901 announce AS18400
org:            ORG-XNL1-AP
admin-c:        ML825-AP
tech-c:         DH390-AP
abuse-c:        AX120-AP
notify:         noc@xtreme.net.nz
mnt-lower:      MAINT-NZ-XTREME-NETWORKS
mnt-routes:     MAINT-NZ-XTREME-NETWORKS
mnt-by:         APNIC-HM
mnt-irt:        IRT-XTREME-NETWORKS-NZ
last-modified:  2020-06-22T19:16:35Z
source:         APNIC

irt:            IRT-XTREME-NETWORKS-NZ
address:        Level 1, The Thorndon Centre
address:        191 Thorndon Quay
address:        Thorndon
address:        Wellington
e-mail:         abuse@xtreme.net.nz
abuse-mailbox:  abuse@xtreme.net.nz
admin-c:        ML825-AP
tech-c:         DH390-AP
auth:           # Filtered
remarks:        abuse@xtreme.net.nz was validated on 2025-10-01
mnt-by:         MAINT-NZ-XTREME-NETWORKS
last-modified:  2025-11-18T00:27:07Z
source:         APNIC

organisation:   ORG-XNL1-AP
org-name:       Xtreme Networks Limited
org-type:       LIR
country:        NZ
address:        Level 1
address:        191 Thorndon Quay
address:        Thorndon
address:        Pipitea
phone:          +64-4-4740770
fax-no:         +64-4-4740779
e-mail:         info@xtreme.nz
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2025-02-24T12:56:25Z
source:         APNIC

role:           ABUSE XTREMENETWORKSNZ
country:        ZZ
address:        Level 1, The Thorndon Centre
address:        191 Thorndon Quay
address:        Thorndon
address:        Wellington
phone:          +000000000
e-mail:         abuse@xtreme.net.nz
admin-c:        ML825-AP
tech-c:         DH390-AP
nic-hdl:        AX120-AP
remarks:        Generated from irt object IRT-XTREME-NETWORKS-NZ
remarks:        abuse@xtreme.net.nz was validated on 2025-10-01
abuse-mailbox:  abuse@xtreme.net.nz
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-01T19:07:33Z
source:         APNIC

person:         Dion Hallam
nic-hdl:        DH390-AP
e-mail:         dion.hallam@xtreme.net.nz
address:        Level 3, The Thorndon Centre
address:        191 Thorndon Quay
address:        Thorndon
address:        Wellington
address:        New Zealand
phone:          +64-4-4740-770
country:        NZ
mnt-by:         MAINT-NZ-XTREME-NETWORKS
fax-no:         +64-4-4740-779
last-modified:  2011-10-28T04:17:03Z
source:         APNIC

person:         Mike Lee
nic-hdl:        ML825-AP
e-mail:         mike.lee@xtreme.net.nz
address:        Level 3, The Thorndon Centre
address:        191 Thorndon Quay
address:        Thorndon
address:        Wellington
address:        New Zealand
phone:          +64-4-4740-770
country:        NZ
mnt-by:         MAINT-NZ-XTREME-NETWORKS
fax-no:         +64-4-4740-779
last-modified:  2011-10-28T04:16:24Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-US2)

Parsed Whois Response

Peers

AS Number	Description	Country
AS38037	InternetNZ	NZ
AS56030	Voyager Internet Ltd.	NZ
AS58511	Anycast Global Backbone	AU
AS136524	Zylex Computers Limited	NZ
AS132143	Harbour City Security Limited	NZ
AS131318	Wialus Solutions Limited	NZ
AS24516	Virtutel Pty Ltd	AU
AS45641	Advantage Limited	NZ
AS153850	Resolve Technology Limited	NZ
AS38037	InternetNZ Lab	NZ

Upstreams

AS Number	Description	Country
AS56030	Voyager Internet Ltd.	NZ
AS64073	VETTA TRADING LIMITED	NZ
AS45177	Devoli LTD	NZ

Downstreams

AS Number	Description	Country
AS38037	InternetNZ	NZ
AS136524	Zylex Computers Limited	NZ
AS132143	Harbour City Security Limited	NZ
AS131318	Wialus Solutions Limited	NZ
AS45641	Advantage Limited	NZ
AS151475	Caduceus Systems Limited	NZ
AS153850	Resolve Technology Limited	NZ
AS141228	Monitor New Zealand Limited	NZ
AS131455	Onsite Computers	AU
AS139020	CloudLink Communications	NZ