ASN AS51728 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS51728?

AS51728 is listed under Seltimil Oy.

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.

AS51728 Seltimil Oy | IPGeolocation.io

ASN Lookup Tool

Seltimil Oy seltimil.fi

FI 5 Routes

AS Data

AS51728

AS51728 – Seltimil Oy

AS Number	51728
AS Name	Seltimil-AS
Organization	Seltimil Oy (org-so31-ripe)
Country	FI
Website	seltimil.fi
Number of IPv4 Routes	4
Number of IPv6 Routes	1
ASN type	BUSINESS
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2010-10-26

ASN Intelligence API for production workflows

Use ASN data for AS51728 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2a00:ac00::/32	AS51728	Seltimil Oy	Seltimil Oy	~79×10²⁷
91.190.192.0/21	AS51728	Seltimil Oy	Seltimil Oy Infrastructure	2048
146.66.24.0/22	AS51728	Seltimil Oy	Seltimil Oy	1024
185.40.88.0/22	AS51728	Seltimil Oy	Seltimil Oy	1024
80.66.160.0/20	AS51728	Seltimil Oy	Kampus network	4096

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 'AS51357 - AS51817'

as-block:       AS51357 - AS51817
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:        2025-02-13T13:57:44Z
last-modified:  2025-02-13T13:57:44Z
source:         RIPE

% Information related to 'AS51728'

% Abuse contact for 'AS51728' is 'abuse@seltimil.fi'

aut-num:        AS51728
as-name:        Seltimil-AS
org:            ORG-SO31-RIPE
status:         ASSIGNED
import:         from AS16302 accept ANY
import:         from AS29422 accept AS-NBLNETFI
import:         from AS47605 accept ANY
import:         from AS1759 accept ANY
import:         from AS1741 accept AS-FUNET
import:         from AS42265 accept AS42265
import:         from AS50377 accept AS50377
import:         from AS43016 accept AS43016
export:         to AS50377 announce ANY
export:         to AS16302 announce AS-set-SELTIMIL
export:         to AS29422 announce AS-set-SELTIMIL
export:         to AS47605 announce AS-set-SELTIMIL
export:         to AS1759 announce AS-set-SELTIMIL
export:         to AS1741 announce AS-set-SELTIMIL
export:         to AS42265 announce ANY
export:         to AS43016 announce ANY
admin-c:        ST5534-RIPE
tech-c:         ST5534-RIPE
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-SELTIMIL
created:        2010-10-26T15:18:26Z
last-modified:  2026-01-22T21:39:12Z
source:         RIPE # Filtered

organisation:   ORG-SO31-RIPE
org-name:       Seltimil Oy
country:        FI
org-type:       LIR
address:        Konttisentie 8, Vaajakoski
address:        40800
address:        jyvaskyla
address:        FINLAND
phone:          +358505919305
fax-no:         +3587310102144
admin-c:        JV6595-RIPE
admin-c:        PS10874-RIPE
mnt-ref:        MNT-SELTIMIL
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-SELTIMIL
abuse-c:        ST5534-RIPE
created:        2010-09-28T12:17:15Z
last-modified:  2024-01-30T08:39:41Z
source:         RIPE # Filtered

role:           SELTIMIL TECH
address:        Konttisentie 8 40800 Vaajakoski
abuse-mailbox:  abuse@seltimil.fi
admin-c:        JB7905-RIPE
admin-c:        PS10874-RIPE
tech-c:         JB7905-RIPE
tech-c:         PS10874-RIPE
tech-c:         JV6595-RIPE
nic-hdl:        ST5534-RIPE
mnt-by:         MNT-SELTIMIL
created:        2010-10-01T09:45:30Z
last-modified:  2024-01-26T10:16:05Z
source:         RIPE # Filtered

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

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS51357 - AS51817",
    "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" : "2025-02-13",
    "date_updated" : "2025-02-13",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS51728",
    "as_name" : "Seltimil-AS",
    "status" : "ASSIGNED",
    "import" : [ "from AS16302 accept ANY", "from AS29422 accept AS-NBLNETFI", "from AS47605 accept ANY", "from AS1759 accept ANY", "from AS1741 accept AS-FUNET", "from AS42265 accept AS42265", "from AS50377 accept AS50377", "from AS43016 accept AS43016" ],
    "export" : [ "to AS50377 announce ANY", "to AS16302 announce AS-set-SELTIMIL", "to AS29422 announce AS-set-SELTIMIL", "to AS47605 announce AS-set-SELTIMIL", "to AS1759 announce AS-set-SELTIMIL", "to AS1741 announce AS-set-SELTIMIL", "to AS42265 announce ANY", "to AS43016 announce ANY" ],
    "organization" : "ORG-SO31-RIPE",
    "admin_contacts" : [ "ST5534-RIPE" ],
    "tech_contacts" : [ "ST5534-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "MNT-SELTIMIL" ],
    "date_created" : "2010-10-26",
    "date_updated" : "2026-01-22",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-SO31-RIPE",
    "name" : "Seltimil Oy",
    "type" : "LIR",
    "address" : [ "Konttisentie 8, Vaajakoski", "40800", "jyvaskyla", "FINLAND" ],
    "street" : "Konttisentie",
    "city" : "Jyvaskyla",
    "zip_code" : "40800",
    "country" : [ "FI" ],
    "phone" : [ "+358505919305" ],
    "fax_no" : [ "+3587310102144" ],
    "admin_contacts" : [ "JV6595-RIPE", "PS10874-RIPE" ],
    "abuse_contacts" : [ "ST5534-RIPE" ],
    "mnt_ref" : [ "MNT-SELTIMIL", "RIPE-NCC-HM-MNT" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "MNT-SELTIMIL" ],
    "date_created" : "2010-09-28",
    "date_updated" : "2024-01-30",
    "source" : "RIPE",
    "addressCountry" : "FINLAND"
  },
  "administrative_contacts" : [ {
    "handle" : "ST5534-RIPE",
    "name" : "SELTIMIL TECH",
    "address" : [ "Konttisentie 8 40800 Vaajakoski" ],
    "street" : "Konttisentie",
    "city" : "Vaajakoski",
    "zip_code" : "40800",
    "abuse_mailbox" : [ "abuse@seltimil.fi" ],
    "admin_contacts" : [ "JB7905-RIPE", "PS10874-RIPE" ],
    "tech_contacts" : [ "JB7905-RIPE", "PS10874-RIPE", "JV6595-RIPE" ],
    "mnt_by" : [ "MNT-SELTIMIL" ],
    "date_created" : "2010-10-01",
    "date_updated" : "2024-01-26",
    "source" : "RIPE"
  } ],
  "technical_contacts" : [ {
    "handle" : "ST5534-RIPE",
    "name" : "SELTIMIL TECH",
    "address" : [ "Konttisentie 8 40800 Vaajakoski" ],
    "street" : "Konttisentie",
    "city" : "Vaajakoski",
    "zip_code" : "40800",
    "abuse_mailbox" : [ "abuse@seltimil.fi" ],
    "admin_contacts" : [ "JB7905-RIPE", "PS10874-RIPE" ],
    "tech_contacts" : [ "JB7905-RIPE", "PS10874-RIPE", "JV6595-RIPE" ],
    "mnt_by" : [ "MNT-SELTIMIL" ],
    "date_created" : "2010-10-01",
    "date_updated" : "2024-01-26",
    "source" : "RIPE"
  } ]
}

Peers

AS Number	Description	Country
AS1741	CSC Tieteen tietotekniikan keskus Oy	FI
AS16302	Suomi Communications Oy	FI
AS47605	FNE Finland Oy	FI
AS42265	RIPE Network Coordination Centre	NL
AS6939	Hurricane Electric LLC	US
AS50304	Blix Solutions AS	NO
AS47605	FNE-Finland Oy	FI
AS5405	Inter.link GmbH	DE
AS50377	Dustin Finland Oy	FI
AS29422	Telia Cygate Oy	FI

Upstreams

AS Number	Description	Country
AS16302	Suomi Communications Oy	FI
AS20764	CJSC RASCOM	RU
AS47605	FNE Finland Oy	FI
AS1759	Telia Finland Oyj	FI
AS6939	Hurricane Electric LLC	US
AS5405	Inter.link GmbH	DE
AS137409	GSL Networks Pty LTD	AU

Downstreams

AS Number	Description	Country
AS47605	FNE Finland Oy	FI
AS43016	Keski Suomen Valokuituverkot Oy	FI