What is ASN AS204457?

ASN AS204457 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS204457?

AS204457 is listed under Atlantis Telekomunikasyon Bilisim Hizmetleri San. ve Tic. Ltd. Sti..

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.

AS204457 Atlantis Telekomunikasyon Bilisim Hizmetleri San. ve Tic. Ltd. Sti.

Atlantis Telekomunikasyon Bilisim Hizmetleri San. ve Tic. Ltd. Sti. atlantisnet.com.tr

TR 26 Routes

AS Data

AS204457

AS204457 – Atlantis Telekomunikasyon Bilisim Hizmetleri San. ve Tic. Ltd. Sti.

AS Number	204457
AS Name	ATLANTIS-CENTRAL
Organization	Atlantis Telekomunikasyon Bilisim Hizmetleri San. ve Tic. Ltd. Sti. (org-atbh1-ripe)
Country	TR
Website	atlantisnet.com.tr
Number of IPv4 Routes	25
Number of IPv6 Routes	0
ASN type	ISP
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2018-03-07

ASN Intelligence API for production workflows

Use ASN data for AS204457 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

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 'AS203940 - AS205662'

as-block:       AS203940 - AS205662
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:        2026-03-05T15:29:31Z
last-modified:  2026-03-05T15:29:31Z
source:         RIPE

% Information related to 'AS204457'

% Abuse contact for 'AS204457' is 'abuse@atlantisnet.com.tr'

aut-num:        AS204457
as-name:        ATLANTIS-CENTRAL
org:            ORG-ATBH1-RIPE
remarks:        ************ Upstreams ************
import:         from AS12735 accept ANY
import:         from AS9121 accept ANY
import:         from AS61135 accept ANY
import:         from AS15924 accept ANY
import:         from AS204036 accept ANY
import:         from AS44901 accept ANY
import:         from AS6204 accept ANY
import:         from AS202303  accept ANY
import:         from AS213658 accept ANY
import:         from AS214382 accept ANY
import:         from AS34984 accept ANY
import:         from AS-57344 accept ANY
import:         from AS51722 accept ANY
import:         from AS211735 accept ANY
import:         from AS216192 accept ANY
import:         from AS209007 accept ANY
import:         from AS62425:AS-KZYDC accept ANY
import:         from AS56325 accept ANY
import:         from as214941:as-upcell accept ANY
import:         from AS49565:AS-POLE accept ANY
import:         from AS206375:AS-SET accept any
import:         from AS51722:AS-PIXOOF accept ANY
import:         from AS-EURONETTELEKOM accept ANY
import:         from AS-DGN accept ANY
import:         from AS137409 accept ANY
import:         from AS-FIXNET-TR accept ANY
export:         to AS9121 announce AS204457:AS-ATLANTISNET
export:         to AS49565:AS-POLE announce AS204457:AS-ATLANTISNET
export:         to AS137409 announce AS204457:AS-ATLANTISNET
export:         to as214941:as-upcell announce AS204457:AS-ATLANTISNET
export:         to AS51722:AS-PIXOOF announce AS204457:AS-ATLANTISNET
export:         to AS56325 announce AS204457:AS-ATLANTISNET
export:         to AS-FIXNET-TR announce AS204457:AS-ATLANTISNET
export:         to AS62425 announce AS204457:AS-ATLANTISNET
export:         to AS51722 announce AS204457:AS-ATLANTISNET
export:         to AS61135 announce AS204457:AS-ATLANTISNET
export:         to AS211735 announce AS204457:AS-ATLANTISNET
export:         to AS12735 announce AS204457:AS-ATLANTISNET
export:         to AS34984 announce AS204457:AS-ATLANTISNET
export:         to AS216192 announce AS204457:AS-ATLANTISNET
export:         to AS15924 announce AS204457:AS-ATLANTISNET
export:         to AS44901 announce AS204457:AS-ATLANTISNET
export:         to AS-57344 announce AS204457:AS-ATLANTISNET
export:         to AS213658 announce AS204457:AS-ATLANTISNET
export:         to AS202303 announce AS204457:AS-ATLANTISNET
export:         to AS-EURONETTELEKOM announce AS204457:AS-ATLANTISNET
export:         to AS-DGN announce AS204457:AS-ATLANTISNET
export:         to AS206375:AS-SET announce AS204457:AS-ATLANTISNET
remarks:        ************ Downstream ************
import:         from AS212549 accept any
export:         to AS212549 announce AS204457:AS-ATLANTISNET
import:         from AS212193 accept ANY
import:         from AS214608 accept ANY
import:         from AS205570 accept ANY
import:         from AS209275 accept ANY
export:         to AS212193 announce AS204457:AS-ATLANTISNET
export:         to AS214608 announce AS204457:AS-ATLANTISNET
export:         to AS214382 announce AS204457:AS-ATLANTISNET
export:         to AS205570 announce AS204457:AS-ATLANTISNET
export:         to AS6777:AS-AMS-IX-RS-SETS announce AS204457:AS-ATLANTISNET
export:         to AS6777:AS-AMS-IX-RS announce AS204457:AS-ATLANTISNET
import:         from AS208821 accept ANY
import:         from AS6823 accept ANY
import:         from AS206375 accept ANY
import:         from AS6777:AS-AMS-IX-RS-SETS accept ANY
import:         from AS6777:AS-AMS-IX-RS accept ANY
export:         to AS208821 announce AS204457:AS-ATLANTISNET
export:         to AS204036 announce AS204457:AS-ATLANTISNET
export:         to AS209275 announce AS204457:AS-ATLANTISNET
export:         to AS6823 announce AS204457:AS-ATLANTISNET
export:         to AS206375 announce AS204457:AS-ATLANTISNET
export:         to AS6204 announce AS204457:AS-ATLANTISNET
export:         to AS209007 announce AS204457:AS-ATLANTISNET
admin-c:        OZ620-RIPE
tech-c:         OZ620-RIPE
tech-c:         SD12478-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         tr-atlantis-1-mnt
created:        2018-03-07T16:32:53Z
last-modified:  2026-09-19T07:39:12Z
source:         RIPE

organisation:   ORG-ATBH1-RIPE
org-name:       Atlantis Telekomunikasyon Bilisim Hizmetleri San. ve Tic. Ltd. Sti.
country:        TR
reg-nr:         928128
org-type:       LIR
address:        Sultaniye mah. Dogan arasli bulv.no:140/8 Esenyurt
address:        34100
address:        istanbul
address:        TURKEY
phone:          +902129673434
admin-c:        OZ620-RIPE
tech-c:         OZ620-RIPE
abuse-c:        AR45341-RIPE
mnt-ref:        tr-atlantis-1-mnt
mnt-ref:        lir-tr-viva-1-MNT
mnt-ref:        lir-tr-nova-1-MNT
mnt-ref:        lir-tr-ozdemir1-1-MNT
mnt-ref:        MNT-NETERRA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         tr-atlantis-1-mnt
created:        2018-02-28T12:52:09Z
last-modified:  2026-05-13T07:38:52Z
source:         RIPE # Filtered

person:         Onur Zorlu
address:        Elmas Sok No:11 Avcilar
address:        34100
address:        istanbul
address:        TURKEY
phone:          +902126904677
nic-hdl:        OZ620-RIPE
mnt-by:         tr-atlantis-1-mnt
created:        2018-02-28T12:52:09Z
last-modified:  2025-12-18T11:18:12Z
source:         RIPE # Filtered

person:         Yavuz Selim MALKOC
address:        Sultan Orhan Mah. Ilyasbey Cad, 1812 Sk.
address:        41400
address:        Kocaeli
address:        TURKEY
phone:          +902626446663
nic-hdl:        SD12478-RIPE
mnt-by:         mnt-tr-internetten-1
created:        2019-09-27T12:14:59Z
last-modified:  2019-09-30T13:41:16Z
source:         RIPE

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

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS203940 - AS205662",
    "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" : "2026-03-05",
    "date_updated" : "2026-03-05",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS204457",
    "as_name" : "ATLANTIS-CENTRAL",
    "status" : "ASSIGNED",
    "import" : [ "from AS12735 accept ANY", "from AS9121 accept ANY", "from AS61135 accept ANY", "from AS15924 accept ANY", "from AS204036 accept ANY", "from AS44901 accept ANY", "from AS6204 accept ANY", "from AS202303  accept ANY", "from AS213658 accept ANY", "from AS214382 accept ANY", "from AS34984 accept ANY", "from AS-57344 accept ANY", "from AS51722 accept ANY", "from AS211735 accept ANY", "from AS216192 accept ANY", "from AS209007 accept ANY", "from AS62425:AS-KZYDC accept ANY", "from AS56325 accept ANY", "from as214941:as-upcell accept ANY", "from AS49565:AS-POLE accept ANY", "from AS206375:AS-SET accept any", "from AS51722:AS-PIXOOF accept ANY", "from AS-EURONETTELEKOM accept ANY", "from AS-DGN accept ANY", "from AS137409 accept ANY", "from AS-FIXNET-TR accept ANY", "from AS212549 accept any", "from AS212193 accept ANY", "from AS214608 accept ANY", "from AS205570 accept ANY", "from AS209275 accept ANY", "from AS208821 accept ANY", "from AS6823 accept ANY", "from AS206375 accept ANY", "from AS6777:AS-AMS-IX-RS-SETS accept ANY", "from AS6777:AS-AMS-IX-RS accept ANY" ],
    "export" : [ "to AS9121 announce AS204457:AS-ATLANTISNET", "to AS49565:AS-POLE announce AS204457:AS-ATLANTISNET", "to AS137409 announce AS204457:AS-ATLANTISNET", "to as214941:as-upcell announce AS204457:AS-ATLANTISNET", "to AS51722:AS-PIXOOF announce AS204457:AS-ATLANTISNET", "to AS56325 announce AS204457:AS-ATLANTISNET", "to AS-FIXNET-TR announce AS204457:AS-ATLANTISNET", "to AS62425 announce AS204457:AS-ATLANTISNET", "to AS51722 announce AS204457:AS-ATLANTISNET", "to AS61135 announce AS204457:AS-ATLANTISNET", "to AS211735 announce AS204457:AS-ATLANTISNET", "to AS12735 announce AS204457:AS-ATLANTISNET", "to AS34984 announce AS204457:AS-ATLANTISNET", "to AS216192 announce AS204457:AS-ATLANTISNET", "to AS15924 announce AS204457:AS-ATLANTISNET", "to AS44901 announce AS204457:AS-ATLANTISNET", "to AS-57344 announce AS204457:AS-ATLANTISNET", "to AS213658 announce AS204457:AS-ATLANTISNET", "to AS202303 announce AS204457:AS-ATLANTISNET", "to AS-EURONETTELEKOM announce AS204457:AS-ATLANTISNET", "to AS-DGN announce AS204457:AS-ATLANTISNET", "to AS206375:AS-SET announce AS204457:AS-ATLANTISNET", "to AS212549 announce AS204457:AS-ATLANTISNET", "to AS212193 announce AS204457:AS-ATLANTISNET", "to AS214608 announce AS204457:AS-ATLANTISNET", "to AS214382 announce AS204457:AS-ATLANTISNET", "to AS205570 announce AS204457:AS-ATLANTISNET", "to AS6777:AS-AMS-IX-RS-SETS announce AS204457:AS-ATLANTISNET", "to AS6777:AS-AMS-IX-RS announce AS204457:AS-ATLANTISNET", "to AS208821 announce AS204457:AS-ATLANTISNET", "to AS204036 announce AS204457:AS-ATLANTISNET", "to AS209275 announce AS204457:AS-ATLANTISNET", "to AS6823 announce AS204457:AS-ATLANTISNET", "to AS206375 announce AS204457:AS-ATLANTISNET", "to AS6204 announce AS204457:AS-ATLANTISNET", "to AS209007 announce AS204457:AS-ATLANTISNET" ],
    "organization" : "ORG-ATBH1-RIPE",
    "admin_contacts" : [ "OZ620-RIPE" ],
    "tech_contacts" : [ "OZ620-RIPE", "SD12478-RIPE" ],
    "remarks" : [ "************ Upstreams ************", "************ Downstream ************" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "tr-atlantis-1-mnt" ],
    "date_created" : "2018-03-07",
    "date_updated" : "2026-09-19",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-ATBH1-RIPE",
    "name" : "Atlantis Telekomunikasyon Bilisim Hizmetleri San. ve Tic. Ltd. Sti.",
    "type" : "LIR",
    "address" : [ "Sultaniye mah. Dogan arasli bulv.no:140/8 Esenyurt", "34100", "istanbul", "TURKEY" ],
    "street" : "Sultaniye Mah. Dogan Arasli Bulv.no",
    "city" : "Istanbul",
    "zip_code" : "34100",
    "country" : [ "TR" ],
    "phone" : [ "+902129673434" ],
    "admin_contacts" : [ "OZ620-RIPE" ],
    "tech_contacts" : [ "OZ620-RIPE" ],
    "abuse_contacts" : [ "AR45341-RIPE" ],
    "mnt_ref" : [ "tr-atlantis-1-mnt", "lir-tr-viva-1-MNT", "lir-tr-nova-1-MNT", "lir-tr-ozdemir1-1-MNT", "MNT-NETERRA" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "tr-atlantis-1-mnt" ],
    "date_created" : "2018-02-28",
    "date_updated" : "2026-05-13",
    "source" : "RIPE",
    "addressCountry" : "TURKEY"
  },
  "administrative_contacts" : [ {
    "handle" : "OZ620-RIPE",
    "name" : "Onur Zorlu",
    "address" : [ "Elmas Sok No:11 Avcilar", "34100", "istanbul", "TURKEY" ],
    "street" : "Avcilar",
    "city" : "Istanbul",
    "zip_code" : "34100",
    "country" : "TURKEY",
    "phone" : [ "+902126904677" ],
    "mnt_by" : [ "tr-atlantis-1-mnt" ],
    "date_created" : "2018-02-28",
    "date_updated" : "2025-12-18",
    "source" : "RIPE",
    "addressCountry" : "TURKEY"
  } ],
  "technical_contacts" : [ {
    "handle" : "OZ620-RIPE",
    "name" : "Onur Zorlu",
    "address" : [ "Elmas Sok No:11 Avcilar", "34100", "istanbul", "TURKEY" ],
    "street" : "Avcilar",
    "city" : "Istanbul",
    "zip_code" : "34100",
    "country" : "TURKEY",
    "phone" : [ "+902126904677" ],
    "mnt_by" : [ "tr-atlantis-1-mnt" ],
    "date_created" : "2018-02-28",
    "date_updated" : "2025-12-18",
    "source" : "RIPE",
    "addressCountry" : "TURKEY"
  }, {
    "handle" : "SD12478-RIPE",
    "name" : "Yavuz Selim MALKOC",
    "address" : [ "Sultan Orhan Mah. Ilyasbey Cad, 1812 Sk.", "41400", "Kocaeli", "TURKEY" ],
    "street" : "Ilyasbey Cad 1812 Sk.",
    "city" : "Kocaeli",
    "zip_code" : "41400",
    "country" : "TURKEY",
    "phone" : [ "+902626446663" ],
    "mnt_by" : [ "mnt-tr-internetten-1" ],
    "date_created" : "2019-09-27",
    "date_updated" : "2019-09-30",
    "source" : "RIPE",
    "addressCountry" : "TURKEY"
  } ]
}

Peers

AS Number	Description	Country
AS199939	KeenSystems B.V.	NL
AS40994	Hohl IT e.U.	AT
AS58057	Securebit AG	CH
AS41998	NetCom BW GmbH	DE
AS50533	I.T.E.N.O.S. International Telecom Network Operation Services GmbH	DE
AS39521	TNGNET B.V.	NL
AS38880	Micron21 Datacentre Pty Ltd	AU
AS50072	Talpa TV B.V.	NL
AS2611	BELNET	BE
AS12611	R KOM Regensburger Telekommunikationsgesellschaft mbH	DE
AS24953	NETPLANET GmbH	AT
AS62597	IBM	US
AS12897	ENTEGA Medianet GmbH	DE
AS51483	SaSG GmbH & Co. KG	DE
AS8315	WorldStream B.V.	NL
AS215724	Edgevana, Inc.	US
AS139341	ACEVILLE PTE.LTD.	SG
AS15447	CM.com N.V.	NL
AS13101	TNG Stadtnetz GmbH	DE
AS43140	Teleflash GmbH	DE
AS60979	KPMG IT Service GmbH	DE
AS203489	WiMore S.r.l.	IT
AS12941	intersaar GmbH	DE
AS206735	Novelcomm LP	GR
AS39889	Fredrik Holmqvist	SE
AS1126	Vancis Advanced ICT Services	ZZ
AS50427	Orion Telecom LLC	RU
AS13237	euNetworks GmbH	DE
AS50309	Arcadiz Telecom NV	BE
AS200062	Optitrust GmbH	DE
AS21040	EKT AG	CH
AS204989	Rekers Digitaltechnik Beteiligungsgesellschaft mbH trading as Rekers Digitaltechnik GmbH & Co.KG	DE
AS25575	Ledl.net GmbH & Co. KG	AT
AS207234	Mobile Breitbandnetze GmbH	DE
AS559	SWITCH	CH
AS8758	Iway AG	CH
AS25415	ADDIX GmbH	DE
AS197964	Julius Blum GmbH	AT
AS196925	Azertelecom LLC	AZ
AS27281	Quantcast Corporation	US
AS29405	VNET a.s.	SK
AS29838	Atlantic Metro Communications II, Inc.	US
AS62023	NYNEX satellite OHG	DE
AS8308	NAUKOWA I AKADEMICKA SIEC KOMPUTEROWA PANSTWOWY INSTYTUT BADAWCZY	PL
AS56630	Melbikomas UAB	LT
AS396986	Bytedance Inc.	US
AS209400	KurpfalzTEL GmbH	DE
AS32787	Akamai Technologies, Inc.	US
AS12741	Netia SA	PL
AS205627	Daimler Truck AG	DE
AS63927	RISE ASIA TECHNOLOGY LIMITED	PH
AS142631	Metro Lightspeed	MY
AS44620	Netlen Internet Hizmetleri Ltd. Sti.	TR
AS31399	Mercedes Benz Group AG	DE
AS20773	Host Europe GmbH	DE
AS132876	Symphony Communication Public Company Limited	TH
AS9211	Nawork Internet Informationssysteme GmbH	DE
AS200132	Peter Paul Maria Kurstjens	NL
AS208959	SlashN Services Pte. Ltd.	SG
AS58212	dataforest GmbH	DE

Upstreams

AS Number	Description	Country
AS8717	A1 Bulgaria EAD	BG
AS20326	TeraSwitch Networks Inc.	US
AS34927	iFog GmbH	CH
AS49434	FBW NETWORKS SAS	FR
AS39351	31173 Services AB	SE
AS6204	ZET.NET IP Transit	RO
AS25091	IP Max SA	CH
AS6939	Hurricane Electric LLC	US
AS48362	Stadtwerke Feldkirch	AT
AS8298	IPng Networks GmbH	CH
AS6663	Euroweb Romania S.R.L.	RO
AS33891	Core Backbone GmbH	DE
AS9121	Turk Telekomunikasyon Anonim Sirketi	TR
AS34177	Celeste SAS	FR
AS56655	Gigahost AS	NO
AS13110	INEA sp. z o.o.	PL
AS8280	SYNAPSECOM TELECOMS S.A.	GR
AS56911	Warian S.R.L.	IT
AS6777	Amsterdam Internet Exchange B.V.	NL
AS60171	AFR IX TELECOM S.A.	ES
AS8218	operated Upstreamnet gmbh	FR
AS15958	CETIN Ltd. Belgrade	RS
AS9198	JSC Kazakhtelecom	KZ
AS37497	Network Platforms PTY LTD	ZA
AS50629	LWLcom GmbH	DE
AS47692	Nessus GmbH	AT
AS61049	Exascale Ltd	GB
AS50673	Serverius Holding B.V.	NL
AS200612	Gulf Bridge International Inc.	VG
AS14840	BR.Digital Telecom	BR
AS9002	RETN Limited	GB
AS20766	Association Gitoyen	FR
AS34984	Superonline Iletisim Hizmetleri A.S.	TR
AS41327	Fiber Telecom S.p.A.	IT
AS15935	ha vel internet s.r.o.	CZ
AS8758	Iway AG	CH
AS29691	Nine Internet Solutions AG	CH
AS42295	TBISS Ltd	BG
AS8447	A1 Telekom Austria AG	AT
AS35625	Eurofiber France SAS	FR
AS215638	Cilix Limited	GB
AS62000	SERVERD SAS	FR
AS137409	GSL Networks Pty LTD	AU
AS34549	meerfarbig GmbH & Co. KG	DE

Downstreams

AS Number	Description	Country
AS214608	Gazinet Internet Iletisim teknolojileri ltd. Sti.	TR
AS202303	TRENDNET TELEKOMUNIKASYON BILISIM HIZMETLERI TICARET LIMITED SIRKETI	TR
AS51722	PIXOOF TEKNOLOJI ANONIM SIRKETI	TR
AS201178	Euronet Telekomunikasyon A.S.	TR
AS43260	DGN TEKNOLOJI A.S.	TR
AS212549	KOYCEGIZ BILISIM HAB.TEK.SAN.TIC.LTD.STI.	TR
AS204036	Ennova Telekom limited sirketi	TR
AS62425	Mailbox Internet Hizmetleri Ltd. Sti.	TR
AS205570	SIBANET TELEKOM LIMITED SIRKETI	TR
AS212193	VIVA INTERNET LIMITED SIRKETI	TR
AS56325	Markahost Telekomunikasyon Ve Ticaret Limited Sirketi	TR
AS49565	Pole Telekomunikasyon Sanayi ve Ticaret Anonim Sirketi	TR

Legacy Routes

185.50.164.0/22

ASN Lookup Tool

ASN Summary