ASN AS1128 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS1128?

AS1128 is listed under Technische Universiteit Delft.

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.

AS1128 Technische Universiteit Delft

ASN Lookup Tool

Technische Universiteit Delft tudelft.nl

NL 3 Routes

AS Data

AS1128

AS1128 – Technische Universiteit Delft

AS Number	1128
AS Name	TUDELFT-NL
Organization	Technische Universiteit Delft (org-sb3-ripe)
Country	NL
Website	tudelft.nl
Number of IPv4 Routes	3
Number of IPv6 Routes	0
ASN type	EDUCATION
Allocation Status	LEGACY
Registry	RIPE
Date Allocated	2002-09-20

ASN Intelligence API for production workflows

Use ASN data for AS1128 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

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
131.180.0.0/16	AS1128	Technische Universiteit Delft	Technische Universiteit Delft	65536
130.161.0.0/16	AS1128	Technische Universiteit Delft	Technische Universiteit Delft	65536
145.94.0.0/16	AS1128	Technische Universiteit Delft	Delft University of Technology Network	65536

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 'AS1101 - AS1200'

as-block:       AS1101 - AS1200
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:        2018-11-22T15:27:09Z
last-modified:  2018-11-22T15:27:09Z
source:         RIPE

% Information related to 'AS1128'

% Abuse contact for 'AS1128' is 'cert@surfcert.nl'

aut-num:        AS1128
as-name:        TUDELFT-NL
descr:          DTO TUDELFT, The Netherlands - AS
admin-c:        HTN3-RIPE
tech-c:         HTN3-RIPE
status:         LEGACY
mnt-by:         AS1103-MNT
created:        2002-09-20T11:12:04Z
last-modified:  2021-01-22T14:57:00Z
source:         RIPE # Filtered
mnt-by:         RIPE-NCC-LEGACY-MNT
org:            ORG-Sb3-RIPE

organisation:   ORG-Sb3-RIPE
org-name:       SURF B.V.
country:        NL
reg-nr:         50277375
org-type:       LIR
address:        P.O. Box 19035
address:        3501 DA
address:        Utrecht
address:        NETHERLANDS
phone:          +31887873000
admin-c:        HT3384-RIPE
admin-c:        MK512-RIPE
admin-c:        SNS1-RIPE
admin-c:        WB311-RIPE
admin-c:        NO17-RIPE
admin-c:        RS957-RIPE
admin-c:        JO5863-RIPE
admin-c:        MM57501-RIPE
abuse-c:        SNS1-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        SN-LIR-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SN-LIR-MNT
created:        2004-04-17T11:43:29Z
last-modified:  2026-05-13T07:28:31Z
source:         RIPE # Filtered

role:           Hostmaster TUDELFT Nederland
address:        Delft
phone:          +31 15 2782000
fax-no:         +31 15 2783787
nic-hdl:        HTN3-RIPE
admin-c:        MdG39-RIPE
admin-c:        LB326-RIPE
admin-c:        GJvd5-RIPE
admin-c:        FR392-RIPE
tech-c:         MdG39-RIPE
tech-c:         LB326-RIPE
tech-c:         GJvd5-RIPE
tech-c:         FR392-RIPE
remarks:
remarks:        -------------------------------------------------------
remarks:        *  Please report Internet Abuse to: abuse@tudelft.nl  *
remarks:        *  *************************************************  *
remarks:        -------------------------------------------------------
remarks:
abuse-mailbox:  abuse@tudelft.nl
mnt-by:         SN-LIR-MNT
created:        2003-06-10T13:41:24Z
last-modified:  2013-04-26T12:07:41Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.124.1 (BUSA)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS1101 - AS1200",
    "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" : "2018-11-22",
    "date_updated" : "2018-11-22",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS1128",
    "as_name" : "TUDELFT-NL",
    "description" : [ "DTO TUDELFT, The Netherlands - AS" ],
    "status" : "LEGACY",
    "organization" : "ORG-Sb3-RIPE",
    "admin_contacts" : [ "HTN3-RIPE" ],
    "tech_contacts" : [ "HTN3-RIPE" ],
    "mnt_by" : [ "AS1103-MNT", "RIPE-NCC-LEGACY-MNT" ],
    "date_created" : "2002-09-20",
    "date_updated" : "2021-01-22",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-Sb3-RIPE",
    "name" : "SURF B.V.",
    "type" : "LIR",
    "address" : [ "P.O. Box 19035", "3501 DA", "Utrecht", "NETHERLANDS" ],
    "street" : "Da",
    "city" : "Utrecht",
    "country" : [ "NL" ],
    "phone" : [ "+31887873000" ],
    "admin_contacts" : [ "HT3384-RIPE", "MK512-RIPE", "SNS1-RIPE", "WB311-RIPE", "NO17-RIPE", "RS957-RIPE", "JO5863-RIPE", "MM57501-RIPE" ],
    "abuse_contacts" : [ "SNS1-RIPE" ],
    "mnt_ref" : [ "RIPE-NCC-HM-MNT", "SN-LIR-MNT" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "SN-LIR-MNT" ],
    "date_created" : "2004-04-17",
    "date_updated" : "2026-05-13",
    "source" : "RIPE",
    "addressCountry" : "NETHERLANDS"
  },
  "administrative_contacts" : [ {
    "handle" : "HTN3-RIPE",
    "name" : "Hostmaster TUDELFT Nederland",
    "address" : [ "Delft" ],
    "city" : "Delft",
    "abuse_mailbox" : [ "abuse@tudelft.nl" ],
    "phone" : [ "+31 15 2782000" ],
    "fax_no" : [ "+31 15 2783787" ],
    "admin_contacts" : [ "MdG39-RIPE", "LB326-RIPE", "GJvd5-RIPE", "FR392-RIPE" ],
    "tech_contacts" : [ "MdG39-RIPE", "LB326-RIPE", "GJvd5-RIPE", "FR392-RIPE" ],
    "remarks" : [ "-------------------------------------------------------", "*  Please report Internet Abuse to: abuse@tudelft.nl  *", "*  *************************************************  *", "-------------------------------------------------------" ],
    "mnt_by" : [ "SN-LIR-MNT" ],
    "date_created" : "2003-06-10",
    "date_updated" : "2013-04-26",
    "source" : "RIPE"
  } ],
  "technical_contacts" : [ {
    "handle" : "HTN3-RIPE",
    "name" : "Hostmaster TUDELFT Nederland",
    "address" : [ "Delft" ],
    "city" : "Delft",
    "abuse_mailbox" : [ "abuse@tudelft.nl" ],
    "phone" : [ "+31 15 2782000" ],
    "fax_no" : [ "+31 15 2783787" ],
    "admin_contacts" : [ "MdG39-RIPE", "LB326-RIPE", "GJvd5-RIPE", "FR392-RIPE" ],
    "tech_contacts" : [ "MdG39-RIPE", "LB326-RIPE", "GJvd5-RIPE", "FR392-RIPE" ],
    "remarks" : [ "-------------------------------------------------------", "*  Please report Internet Abuse to: abuse@tudelft.nl  *", "*  *************************************************  *", "-------------------------------------------------------" ],
    "mnt_by" : [ "SN-LIR-MNT" ],
    "date_created" : "2003-06-10",
    "date_updated" : "2013-04-26",
    "source" : "RIPE"
  } ]
}

Peers

AS Number	Description	Country
AS1103	SURF B.V.	NL

Upstreams

AS Number	Description	Country
AS1103	SURF B.V.	NL