ASN AS51708 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS51708?

AS51708 is listed under Libera Universita di Bolzano.

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.

AS51708 Libera Universita di Bolzano

Libera Universita di Bolzano unibz.it

IT 3 Routes

AS Data

AS51708

AS51708 – Libera Universita di Bolzano

AS Number	51708
AS Name	UNIBZ-AS
Organization	Libera Universita di Bolzano(org-ludb1-ripe)
Country	IT
Website	unibz.it
Number of IPv4 Routes	2
Number of IPv6 Routes	1
ASN type	EDUCATION
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2010-10-25

ASN Intelligence API for production workflows

Use ASN data for AS51708 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
46.18.24.0/22	AS51708	Libera Universita di Bolzano	Libera Universita di Bolzano	1024
46.18.24.0/21	AS51708	Libera Universita di Bolzano	Libera Universita di Bolzano	2048
2a02:27e8::/32	AS51708	Libera Universita di Bolzano	Scientific Network South Tyrol	~79×10²⁷

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 'AS51708'

% Abuse contact for 'AS51708' is 'abuse@unibz.it'

aut-num:        AS51708
as-name:        UNIBZ-AS
org:            ORG-LUdB1-RIPE
remarks:        -------------------------------------------------------
remarks:        Transits
remarks:        -------------------------------------------------------
import:         from AS50507 accept ANY
export:         to AS50507 announce ANY
mp-import:      afi ipv6.unicast from AS50507 accept ANY
mp-export:      afi ipv6.unicast to AS50507 announce ANY
import:         from AS137 accept ANY
export:         to AS137 announce AS-UNIBZ
mp-import:      afi ipv6.unicast from AS137 accept ANY
mp-export:      afi ipv6.unicast to AS137 announce AS-UNIBZ
mp-import:      afi ipv6.unicast from AS6939 accept ANY
mp-export:      afi ipv6.unicast to AS6939 announce AS-UNIBZ
import:         from AS1299 accept ANY
export:         to AS1299 announce AS-UNIBZ
mp-import:      afi ipv6.unicast from AS1299 accept ANY
mp-export:      afi ipv6.unicast to AS1299 announce AS-UNIBZ
import:         from AS49088 accept ANY
export:         to AS49088 announce AS-UNIBZ
mp-import:      afi ipv6.unicast from AS49088 accept ANY
mp-export:      afi ipv6.unicast to AS49088 announce AS-UNIBZ
remarks:        -------------------------------------------------------
remarks:        Public peers at MIX
remarks:        -------------------------------------------------------
import:         from AS16509 accept ANY
export:         to AS16509 announce AS-UNIBZ
mp-import:      afi ipv6.unicast from AS16509 accept ANY
mp-export:      afi ipv6.unicast to AS16509 announce AS-UNIBZ
import:         from AS15169 accept ANY
export:         to AS15169 announce AS-UNIBZ
mp-import:      afi ipv6.unicast from AS15169 accept ANY
mp-export:      afi ipv6.unicast to AS15169 announce AS-UNIBZ
import:         from AS8265 accept ANY
export:         to AS8265 announce AS-UNIB
mp-import:      afi ipv6.unicast from AS8265 accept ANY
mp-export:      afi ipv6.unicast to AS8265 announce AS-UNIBZ
import:         from AS8075 accept ANY
export:         to AS8075 announce AS-UNIB
mp-import:      afi ipv6.unicast from AS8075 accept ANY
mp-export:      afi ipv6.unicast to AS8075 announce AS-UNIBZ
import:         from AS6939 accept ANY
export:         to AS6939 announce AS-UNIBZ
import:         from AS13335 accept ANY
export:         to AS13335 announce AS-UNIBZ
mp-import:      afi ipv6.unicast from AS13335 accept ANY
mp-export:      afi ipv6.unicast to AS13335 announce AS-UNIBZ
import:         from AS19679 accept ANY
export:         to AS19679 announce AS-UNIBZ
mp-import:      afi ipv6.unicast from AS19679 accept ANY
mp-export:      afi ipv6.unicast to AS19679 announce AS-UNIBZ
remarks:        -------------------------------------------------------
remarks:        Public Peers at STIX
remarks:        -------------------------------------------------------
import:         from AS203059 accept ANY
export:         to AS203059 announce AS-UNIBZ
mp-import:      afi ipv6.unicast from AS203059 accept ANY
mp-export:      afi ipv6.unicast to AS203059 announce AS-UNIBZ
admin-c:        UNA6-RIPE
tech-c:         UNA6-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         UNIBZ-MNT
created:        2010-10-25T06:45:05Z
last-modified:  2026-03-20T07:43:49Z
source:         RIPE # Filtered

organisation:   ORG-LUdB1-RIPE
org-name:       Libera Universita di Bolzano
country:        IT
org-type:       LIR
address:        Piazza Universita 1
address:        39100
address:        Bolzano
address:        ITALY
phone:          +390471011800
fax-no:         +390471011809
admin-c:        JT3044-RIPE
admin-c:        MP18849-RIPE
mnt-by:         UNIBZ-MNT
mnt-ref:        UNIBZ-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
abuse-c:        UAH8-RIPE
created:        2010-10-19T08:25:03Z
last-modified:  2020-12-16T12:58:57Z
source:         RIPE # Filtered

role:           UNIBZ Network Administrator
address:        Piazza Universita 1 39100 Bolzano Italy
remarks:        ----------------------------------------
remarks:        Abuse and SPAM: <abuse@unibz.it>
remarks:        Operational issues: <noc@unibz.it>
remarks:        ----------------------------------------
admin-c:        DL4539-RIPE
tech-c:         JT3044-RIPE
tech-c:         MP18849-RIPE
nic-hdl:        UNA6-RIPE
mnt-by:         UNIBZ-MNT
created:        2010-10-20T06:54:12Z
last-modified:  2018-11-21T09:08:32Z
source:         RIPE # Filtered
abuse-mailbox:  abuse@unibz.it

% 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" : "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" : "AS51708",
    "as_name" : "UNIBZ-AS",
    "status" : "ASSIGNED",
    "import" : [ "from AS50507 accept ANY", "from AS137 accept ANY", "from AS1299 accept ANY", "from AS49088 accept ANY", "from AS16509 accept ANY", "from AS15169 accept ANY", "from AS8265 accept ANY", "from AS8075 accept ANY", "from AS6939 accept ANY", "from AS13335 accept ANY", "from AS19679 accept ANY", "from AS203059 accept ANY" ],
    "mp_import" : [ "afi ipv6.unicast from AS50507 accept ANY", "afi ipv6.unicast from AS137 accept ANY", "afi ipv6.unicast from AS6939 accept ANY", "afi ipv6.unicast from AS1299 accept ANY", "afi ipv6.unicast from AS49088 accept ANY", "afi ipv6.unicast from AS16509 accept ANY", "afi ipv6.unicast from AS15169 accept ANY", "afi ipv6.unicast from AS8265 accept ANY", "afi ipv6.unicast from AS8075 accept ANY", "afi ipv6.unicast from AS13335 accept ANY", "afi ipv6.unicast from AS19679 accept ANY", "afi ipv6.unicast from AS203059 accept ANY" ],
    "export" : [ "to AS50507 announce ANY", "to AS137 announce AS-UNIBZ", "to AS1299 announce AS-UNIBZ", "to AS49088 announce AS-UNIBZ", "to AS16509 announce AS-UNIBZ", "to AS15169 announce AS-UNIBZ", "to AS8265 announce AS-UNIB", "to AS8075 announce AS-UNIB", "to AS6939 announce AS-UNIBZ", "to AS13335 announce AS-UNIBZ", "to AS19679 announce AS-UNIBZ", "to AS203059 announce AS-UNIBZ" ],
    "mp_export" : [ "afi ipv6.unicast to AS50507 announce ANY", "afi ipv6.unicast to AS137 announce AS-UNIBZ", "afi ipv6.unicast to AS6939 announce AS-UNIBZ", "afi ipv6.unicast to AS1299 announce AS-UNIBZ", "afi ipv6.unicast to AS49088 announce AS-UNIBZ", "afi ipv6.unicast to AS16509 announce AS-UNIBZ", "afi ipv6.unicast to AS15169 announce AS-UNIBZ", "afi ipv6.unicast to AS8265 announce AS-UNIBZ", "afi ipv6.unicast to AS8075 announce AS-UNIBZ", "afi ipv6.unicast to AS13335 announce AS-UNIBZ", "afi ipv6.unicast to AS19679 announce AS-UNIBZ", "afi ipv6.unicast to AS203059 announce AS-UNIBZ" ],
    "organization" : "ORG-LUdB1-RIPE",
    "admin_contacts" : [ "UNA6-RIPE" ],
    "tech_contacts" : [ "UNA6-RIPE" ],
    "remarks" : [ "-------------------------------------------------------", "Transits", "-------------------------------------------------------", "-------------------------------------------------------", "Public peers at MIX", "-------------------------------------------------------", "-------------------------------------------------------", "Public Peers at STIX", "-------------------------------------------------------" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "UNIBZ-MNT" ],
    "date_created" : "2010-10-25",
    "date_updated" : "2026-03-20",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-LUdB1-RIPE",
    "name" : "Libera Universita di Bolzano",
    "type" : "LIR",
    "address" : [ "Piazza Universita 1", "39100", "Bolzano", "ITALY" ],
    "street" : "Piazza Universita",
    "city" : "Bolzano",
    "zip_code" : "39100",
    "country" : [ "IT" ],
    "phone" : [ "+390471011800" ],
    "fax_no" : [ "+390471011809" ],
    "admin_contacts" : [ "JT3044-RIPE", "MP18849-RIPE" ],
    "abuse_contacts" : [ "UAH8-RIPE" ],
    "mnt_ref" : [ "UNIBZ-MNT", "RIPE-NCC-HM-MNT" ],
    "mnt_by" : [ "UNIBZ-MNT", "RIPE-NCC-HM-MNT" ],
    "date_created" : "2010-10-19",
    "date_updated" : "2020-12-16",
    "source" : "RIPE",
    "addressCountry" : "ITALY"
  },
  "administrative_contacts" : [ {
    "handle" : "UNA6-RIPE",
    "name" : "UNIBZ Network Administrator",
    "address" : [ "Piazza Universita 1 39100 Bolzano Italy" ],
    "street" : "Piazza Universita",
    "city" : "Bolzano",
    "zip_code" : "39100",
    "country" : "ITALY",
    "abuse_mailbox" : [ "abuse@unibz.it" ],
    "admin_contacts" : [ "DL4539-RIPE" ],
    "tech_contacts" : [ "JT3044-RIPE", "MP18849-RIPE" ],
    "remarks" : [ "----------------------------------------", "Abuse and SPAM: <abuse@unibz.it>", "Operational issues: <noc@unibz.it>", "----------------------------------------" ],
    "mnt_by" : [ "UNIBZ-MNT" ],
    "date_created" : "2010-10-20",
    "date_updated" : "2018-11-21",
    "source" : "RIPE",
    "addressCountry" : "ITALY"
  } ],
  "technical_contacts" : [ {
    "handle" : "UNA6-RIPE",
    "name" : "UNIBZ Network Administrator",
    "address" : [ "Piazza Universita 1 39100 Bolzano Italy" ],
    "street" : "Piazza Universita",
    "city" : "Bolzano",
    "zip_code" : "39100",
    "country" : "ITALY",
    "abuse_mailbox" : [ "abuse@unibz.it" ],
    "admin_contacts" : [ "DL4539-RIPE" ],
    "tech_contacts" : [ "JT3044-RIPE", "MP18849-RIPE" ],
    "remarks" : [ "----------------------------------------", "Abuse and SPAM: <abuse@unibz.it>", "Operational issues: <noc@unibz.it>", "----------------------------------------" ],
    "mnt_by" : [ "UNIBZ-MNT" ],
    "date_created" : "2010-10-20",
    "date_updated" : "2018-11-21",
    "source" : "RIPE",
    "addressCountry" : "ITALY"
  } ]
}

Peers

AS Number	Description	Country
AS9498	Bharti Airtel Limited	IN
AS6939	Hurricane Electric LLC	US
AS6204	ZET.NET IP Transit	RO
AS60602	Inovare-Prim SRL	MD
AS22356	Durand do Brasil Ltda	BR
AS14537	Continent 8 LLC	US
AS198150	SIACOM JSC	GE
AS8529	Zain Omantel International FZ-LLC	AE
AS57344	Telehouse EAD	BG
AS9498	Bharti Airtel Ltd	IN

Upstreams

AS Number	Description	Country
AS39120	Convergenze S.p.A.	IT
AS28716	Retelit Digital Services S.p.A.	IT
AS9498	Bharti Airtel Limited	IN
AS14840	BR.Digital Telecom	BR
AS61973	Netassist International s.r.o.	CZ
AS263444	Open X Tecnologia Ltda	BR
AS6939	Hurricane Electric LLC	US
AS6204	ZET.NET IP Transit	RO
AS24961	WIIT AG	DE
AS22356	Durand do Brasil Ltda	BR

Downstreams

AS Number	Description	Country
AS50507	Accademia Europea di Bolzano	IT

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