ASN AS44143 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS44143?

AS44143 is listed under A1 Srbija d.o.o. Beograd.

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?

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AS44143 A1 Srbija d.o.o. Beograd

A1 Srbija d.o.o. Beograd a1.rs

RS 17 Routes

AS Data

AS44143

AS44143 – A1 Srbija d.o.o. Beograd

AS Number	44143
AS Name	A1SERBIA-AS
Organization	A1 Srbija d.o.o. Beograd (org-td12-ripe)
Country	RS
Website	a1.rs
Number of IPv4 Routes	14
Number of IPv6 Routes	3
ASN type	ISP
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2007-11-23

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
188.120.96.0/20	AS44143	A1 Srbija d.o.o	A1 Srbija d.o.o	4096
188.120.116.0/22	AS44143	A1 Srbija d.o.o	A1 Serbia	1024
2a00:61c0::/29	AS44143	A1 Srbija d.o.o	A1 Srbija d.o.o	~634×10²⁷
185.37.24.0/22	AS44143	A1 Srbija d.o.o	A1 Serbia	1024
95.86.4.0/22	AS44143	A1 Srbija d.o.o	A1 Srbija d.o.o	1024
2a00:61c1::/32	AS44143	A1 Srbija d.o.o	A1 Srbija d.o.o	~79×10²⁷
77.243.16.0/20	AS44143	A1 Srbija d.o.o	A1 Serbia	4096
95.86.48.0/21	AS44143	A1 Srbija d.o.o	A1 Serbia	2048
188.120.104.0/21	AS44143	A1 Srbija d.o.o	A1 Srbija d.o.o	2048
37.19.104.0/21	AS44143	A1 Srbija d.o.o	A1 Serbia	2048

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 'AS43075 - AS44168'

as-block:       AS43075 - AS44168
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:        2023-12-11T15:09:58Z
last-modified:  2023-12-11T15:09:58Z
source:         RIPE

% Information related to 'AS44143'

% Abuse contact for 'AS44143' is 'zloupotreba@a1.rs'

aut-num:        AS44143
as-name:        A1SERBIA-AS
org:            ORG-Td12-RIPE
admin-c:        NJ1795-RIPE
admin-c:        IP4668-RIPE
tech-c:         IP4668-RIPE
remarks:        ==================
remarks:        UPSTREAM IPv4
remarks:        ==================
import:         from AS8447 accept any
export:         to AS8447 announce AS-VIP-MOBLE
import:         from AS174 accept any
export:         to AS174 announce AS-VIP-MOBLE
remarks:        ==================
remarks:        UPSTREAM IPv6
remarks:        ==================
mp-import:      afi ipv6.unicast from AS8447 accept any
mp-export:      afi ipv6.unicast to AS8447 announce AS-VIP-MOBLE
mp-import:      afi ipv6.unicast from AS174 accept any
mp-export:      afi ipv6.unicast to AS174 announce AS-VIP-MOBLE
remarks:        =====================
remarks:        DOWNSTREAM IPv4
remarks:        =====================
import:         from AS62012 accept AS62012
export:         to AS62012 announce any
import:         from AS205201 accept AS205201
export:         to AS205201 announce any
import:         from AS213008 accept AS213008
export:         to AS213008 announce any
remarks:        ===============================
remarks:        PRIVATE PEERINGS & IXPs IPv4
remarks:        ===============================
import:         from AS13004 accept AS-SOX
export:         to AS13004 announce AS-VIP-MOBLE
import:         from AS15169 accept AS15169
export:         to AS15169 announce AS-VIP-MOBLE
import:         from AS9125 accept AS9125
export:         to AS9125 announce AS-VIP-MOBLE
import:         from AS31042 accept AS31042
export:         to AS31042 announce AS-VIP-MOBLE
import:         from AS44306 accept AS-OMONIA
export:         to AS44306 announce AS-VIP-MOBLE
import:         from AS13335 accept AS-CLOUDFLARE
export:         to AS13335 announce AS-VIP-MOBLE
remarks:        ===============================
remarks:        PRIVATE PEERINGS & IXPs IPv6
remarks:        ===============================
mp-import:      afi ipv6.unicast from AS13004 accept AS-SOX
mp-export:      afi ipv6.unicast to AS13004 announce AS-VIP-MOBLE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         ROUTE-SRB
created:        2007-11-23T08:24:49Z
last-modified:  2026-04-23T09:49:56Z
source:         RIPE # Filtered

organisation:   ORG-TD12-RIPE
org-name:       A1 Srbija d.o.o. Beograd
country:        RS
org-type:       LIR
address:        MILUTINA MILANKOVICA 1z
                Navigator
address:        11070
address:        BEOGRAD
address:        SERBIA
phone:          +381601234
phone:          +381602254141
admin-c:        NJ1795-RIPE
abuse-c:        VMA21-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        ROUTE-SRB
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         ROUTE-SRB
created:        2007-02-27T15:48:38Z
last-modified:  2026-04-24T08:17:54Z
source:         RIPE # Filtered
tech-c:         IP4668-RIPE

role:           A1 Serbia IP Admins
address:        A1 Serbia doo
address:        Milutina Milankovica 1z
address:        11070 Beograd
phone:          +381602254141
admin-c:        NJ1795-RIPE
admin-c:        MS59239-RIPE
nic-hdl:        IP4668-RIPE
mnt-by:         ROUTE-SRB
created:        2022-10-13T08:44:34Z
last-modified:  2026-03-25T14:34:49Z
source:         RIPE # Filtered

person:         Novak Josic
address:        A1 Serbia doo
address:        Milutina Milankovica 1z
address:        11070 Beograd
phone:          +381600004437
nic-hdl:        NJ1795-RIPE
mnt-by:         ROUTE-SRB
created:        2023-05-10T12:07:14Z
last-modified:  2023-05-24T10:00:33Z
source:         RIPE # Filtered

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

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS43075 - AS44168",
    "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" : "2023-12-11",
    "date_updated" : "2023-12-11",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS44143",
    "as_name" : "A1SERBIA-AS",
    "status" : "ASSIGNED",
    "import" : [ "from AS8447 accept any", "from AS174 accept any", "from AS62012 accept AS62012", "from AS205201 accept AS205201", "from AS213008 accept AS213008", "from AS13004 accept AS-SOX", "from AS15169 accept AS15169", "from AS9125 accept AS9125", "from AS31042 accept AS31042", "from AS44306 accept AS-OMONIA", "from AS13335 accept AS-CLOUDFLARE" ],
    "mp_import" : [ "afi ipv6.unicast from AS8447 accept any", "afi ipv6.unicast from AS174 accept any", "afi ipv6.unicast from AS13004 accept AS-SOX" ],
    "export" : [ "to AS8447 announce AS-VIP-MOBLE", "to AS174 announce AS-VIP-MOBLE", "to AS62012 announce any", "to AS205201 announce any", "to AS213008 announce any", "to AS13004 announce AS-VIP-MOBLE", "to AS15169 announce AS-VIP-MOBLE", "to AS9125 announce AS-VIP-MOBLE", "to AS31042 announce AS-VIP-MOBLE", "to AS44306 announce AS-VIP-MOBLE", "to AS13335 announce AS-VIP-MOBLE" ],
    "mp_export" : [ "afi ipv6.unicast to AS8447 announce AS-VIP-MOBLE", "afi ipv6.unicast to AS174 announce AS-VIP-MOBLE", "afi ipv6.unicast to AS13004 announce AS-VIP-MOBLE" ],
    "organization" : "ORG-Td12-RIPE",
    "admin_contacts" : [ "NJ1795-RIPE", "IP4668-RIPE" ],
    "tech_contacts" : [ "IP4668-RIPE" ],
    "remarks" : [ "==================", "UPSTREAM IPv4", "==================", "==================", "UPSTREAM IPv6", "==================", "=====================", "DOWNSTREAM IPv4", "=====================", "===============================", "PRIVATE PEERINGS & IXPs IPv4", "===============================", "===============================", "PRIVATE PEERINGS & IXPs IPv6", "===============================" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "ROUTE-SRB" ],
    "date_created" : "2007-11-23",
    "date_updated" : "2026-04-23",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-TD12-RIPE",
    "name" : "A1 Srbija d.o.o. Beograd",
    "type" : "LIR",
    "address" : [ "MILUTINA MILANKOVICA 1z", "Navigator", "11070", "BEOGRAD", "SERBIA" ],
    "street" : "Navigator",
    "city" : "Beograd",
    "zip_code" : "11070",
    "country" : [ "RS" ],
    "phone" : [ "+381601234", "+381602254141" ],
    "admin_contacts" : [ "NJ1795-RIPE" ],
    "tech_contacts" : [ "IP4668-RIPE" ],
    "abuse_contacts" : [ "VMA21-RIPE" ],
    "mnt_ref" : [ "RIPE-NCC-HM-MNT", "ROUTE-SRB" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "ROUTE-SRB" ],
    "date_created" : "2007-02-27",
    "date_updated" : "2026-04-24",
    "source" : "RIPE",
    "addressCountry" : "SERBIA"
  },
  "administrative_contacts" : [ {
    "handle" : "NJ1795-RIPE",
    "name" : "Novak Josic",
    "address" : [ "A1 Serbia doo", "Milutina Milankovica 1z", "11070 Beograd" ],
    "street" : "Milutina Milankovica",
    "city" : "Beograd",
    "zip_code" : "11070",
    "phone" : [ "+381600004437" ],
    "mnt_by" : [ "ROUTE-SRB" ],
    "date_created" : "2023-05-10",
    "date_updated" : "2023-05-24",
    "source" : "RIPE"
  }, {
    "handle" : "IP4668-RIPE",
    "name" : "A1 Serbia IP Admins",
    "address" : [ "A1 Serbia doo", "Milutina Milankovica 1z", "11070 Beograd" ],
    "street" : "Milutina Milankovica",
    "city" : "Beograd",
    "zip_code" : "11070",
    "phone" : [ "+381602254141" ],
    "admin_contacts" : [ "NJ1795-RIPE", "MS59239-RIPE" ],
    "mnt_by" : [ "ROUTE-SRB" ],
    "date_created" : "2022-10-13",
    "date_updated" : "2026-03-25",
    "source" : "RIPE"
  } ],
  "technical_contacts" : [ {
    "handle" : "IP4668-RIPE",
    "name" : "A1 Serbia IP Admins",
    "address" : [ "A1 Serbia doo", "Milutina Milankovica 1z", "11070 Beograd" ],
    "street" : "Milutina Milankovica",
    "city" : "Beograd",
    "zip_code" : "11070",
    "phone" : [ "+381602254141" ],
    "admin_contacts" : [ "NJ1795-RIPE", "MS59239-RIPE" ],
    "mnt_by" : [ "ROUTE-SRB" ],
    "date_created" : "2022-10-13",
    "date_updated" : "2026-03-25",
    "source" : "RIPE"
  } ]
}

Peers

AS Number	Description	Country
AS44306	OMONIA d.o.o.	HR
AS213008	APOTEKARSKA USTANOVA LILLY DROGERIE BEOGRAD	RS
AS174	Cogent Communications, LLC	US
AS31042	Serbia BroadBand Srpske Kablovske mreze d.o.o.	RS
AS13004	Serbian Open Exchange DOO	RS
AS8447	A1 Telekom Austria AG	AT
AS13335	Cloudflare, Inc.	US
AS9125	Drustvo za telekomunikacije Orion telekom doo Beograd Zemun	RS
AS31042	Serbia BroadBand-Srpske Kablovske mreze d.o.o.	RS
AS62012	Generali Osiguranje Srbija	RS

Upstreams

AS Number	Description	Country
AS8447	A1 Telekom Austria AG	AT
AS15958	CETIN Ltd. Belgrade	RS
AS174	Cogent Communications, LLC	US
AS13004	Serbian Open Exchange DOO	RS

Downstreams

AS Number	Description	Country
AS213008	APOTEKARSKA USTANOVA LILLY DROGERIE BEOGRAD	RS
AS62012	Generali Osiguranje Srbija	RS
AS205201	Public Service Media Radio Television of Serbia	RS
AS31042	Serbia BroadBand Srpske Kablovske mreze d.o.o.	RS

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