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If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	151.158.224.0/23	Lazco Corporation
	151.158.224.0/24	Lazco Corporation
	160.30.99.0/24	Lazco Corporation
	162.4.236.0/23	Dowtek Corporation
	2402:4f20::/48	Lazco Corporation
	2402:4f20::/32	Lazco Corporation
	2402:4f20:1::/48	Lazco Corporation
	2402:4f20:3::/48	Lazco Corporation
	2402:6420::/32
	2a0f:85c1:390::/48	Lazco Corporation

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS204844	NCSE NETWORK LTD	✔	✔
	AS20473	The Constant Company, LLC	✘	✔
	AS32595	Liberally Network, LLC	✔	✔
	AS6939	Hurricane Electric LLC	✘	✔
	AS134823	Sky Digital Co., Ltd.	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS6939	Hurricane Electric LLC	✔	✔
	AS204844	NCSE NETWORK LTD	✔	✔
	AS15412	Flag Telecom UK Limited	✔	✔
	AS32595	Liberally Network, LLC	✔	✔
	AS137409	GSL Networks Pty LTD	✔	✔
	AS13335	Cloudflare, Inc.	✔	✔
	AS134823	Sky Digital Co., Ltd.	✔	✔
	AS16509	Amazon.com, Inc.	✔	✔
	AS18041	Taiwan Digital Streaming Co.	✔	✔
	AS213428	CHIEH SHENG LIN	✘	✔
	AS20473	The Constant Company, LLC	✘	✔
	AS24482	SG.GS	✔	✔
	AS8075	Microsoft Corporation	✔	✔
	AS58807	China Mobile International Limited	✔	✔
	AS17408	AboveNet Communications Taiwan	✔	✔
	AS10099	China Unicom Global	✔	✔
	AS4637	Telstra International Limited	✔	✔
	AS9505	Taiwan Internet Gateway	✔	✔
	AS36351	IBM Cloud	✔	✔
	AS932	XNNET LLC	✔	✔
	AS7656	Taiwan Network Access Point	✔	✘
	AS23764	China Telecom Global	✘	✔
	AS19551	Incapsula Inc	✔	✔
	AS38841	kbro CO. Ltd.	✔	✔
	AS140570	Hong Kong Beecloud System Technology Services Limited	✔	✔
	AS21859	Zenlayer Inc	✔	✔
	AS10310	Yahoo Holdings Inc.	✔	✔
	AS59105	Home NOC Operators Group	✔	✔
	AS131596	TBC	✔	✘
	AS16552	Tiggee LLC	✔	✔
	AS42	WoodyNet, Inc.	✔	✔
	AS44324	MoeDove LLC	✔	✔
	AS9304	HGC Global Communications Limited	✔	✘
	AS18046	DongFong Technology Co. Ltd.	✔	✔
	AS213605	Liu HaoRan	✔	✔
	AS17809	VEE TIME CORP.	✔	✔
	AS20940	Akamai International B.V.	✔	✔
	AS9922	New Kaohsiung Broadband LTD.	✔	✘
	AS131645	KLICKKLACK CO., LTD.	✔	✔
	AS215172	JIANYUELAB LTD	✔	✔
	AS983	Akari Networks LLC	✔	✔
	AS18182	Sony Network Taiwan Limited	✔	✔
	AS197000	RIPE NCC - Anycast DNS	✔	✔
	AS9416	Hoshin Multimedia Center Inc.	✔	✘
	AS131634	MOBA Private Limited Taiwan Branch	✔	✘
	AS62468	VpsQuan L.L.C.	✔	✘
	AS9678	HostingInside LTD	✔	✔
	AS208223	SHU-HAO TUNG	✔	✔
	AS207529	NYANLOLI LTD	✘	✔
	AS131607	Digidom CableTV Co., LTD.	✔	✘
	AS14537	Continent 8 LLC	✔	✔
	AS204921	zhenyun sun	✔	✔
	AS63199	CDS Global Cloud Co., Ltd	✔	✘
	AS2687	AT&T Enterprises, LLC	✔	✔
	AS131584	Taiwan Intelligent Fiber Optic Network Co.,Ltd.	✔	✘
	AS152615	Chummy Technology Ltd.	✔	✔
	AS131642	Pittqiao Network Information Co.,Ltd.	✔	✔
	AS31972	Emagine Concept, Inc.	✔	✘
	AS38851	TWT Digital Communication Inc.,	✔	✘
	AS154185	Liu HaoRan	✘	✔
	AS138915	Kaopu Cloud HK Limited	✔	✔
	AS24429	Alibaba Cloud	✔	✔
	AS18419	DaDa Broadband LTD.	✔	✘
	AS32934	Facebook, Inc.	✔	✔
	AS18186	Nebula Global LLC	✔	✔
	AS7356	Sikla Tech Limited	✔	✔
	AS9244	Diyixian.com (TW) Limited	✔	✔
	AS11421	HYW GLOBAL LLC	✔	✔
	AS38856	Walks Cloud Inc.	✔	✔
	AS40676	Psychz Networks	✔	✘
	AS201217	RADISHCLOUD TECHNOLOGY LLC	✔	✔
	AS917	Misaka Network, Inc.	✔	✔
	AS131627	Peicity Digital Cable Television., LTD	✔	✘
	AS55720	Gigabit Hosting Sdn Bhd	✔	✘
	AS207705	Jyun-Kai Hu	✘	✔
	AS18428	Mercycat Network Inc.	✔	✔
	AS150141	Wang Jiacheng	✘	✔
	AS45474	Nexusguard Pte. Ltd.	✔	✘
	AS52025	ParadoxNetworks Limited	✔	✔
	AS18422	Industrial Technology Research Institute	✔	✔
	AS211575	Rui Feng	✔	✔
	AS138995	Antbox Networks Limited	✔	✔
	AS150289	Sun Yanzheng	✘	✔
	AS57976	Blizzard Entertainment, Inc	✔	✔
	AS205329	Kai-Jung Chen	✔	✔
	AS48231	CRE Network, LLC	✘	✔
	AS10133	Chief Telecom Inc.	✔	✔
	AS7539	National Center for High-performance Computing	✔	✔
	AS54994	Meteverse Limited	✔	✔
	AS38047	Taiwan Telecom	✔	✔
	AS215248	Bastiaan Mathijs Brink	✔	✔
	AS131149	Yuan-Jhen Info., Co., Ltd	✔	✔
	AS202939	Chimon Technology Ltd	✔	✔
	AS152626	Cloudbase Network	✔	✔
	AS150766	CoCoDigit Ltd	✔	✔
	AS199767	Pinjia Zhao	✔	✔
	AS142046	1033 Network Information Co.	✔	✔
	AS215256	Ming-Lin Yu	✘	✔
	AS63900	ZUSO Generation Co., Ltd.	✔	✔
	AS152619	Very Fast Network LTD	✔	✔
	AS10135	EASPNET Inc.	✔	✘
	AS53813	ZSCALER, INC.	✔	✔
	AS12198	JSMSR Network	✘	✔
	AS150767	Shi Ji Industrial Co., Ltd.	✘	✔
	AS204539	Axivora Connect LtD	✘	✔
	AS395596	Infinirc LLC	✔	✔
	AS216299	Yang Liuchang	✘	✔
	AS8674	Netnod AB	✔	✔
	AS64078	Star Framework Co.	✔	✘
	AS150755	NUNLINE	✔	✔
	AS9264	Academia Sinica	✔	✔
	AS208414	WEDOS Internet, a.s.	✔	✘
	AS131644	Taiwan Network Information Center	✔	✘
	AS204463	Xin Zhao	✘	✔
	AS152848	asdf.hk	✔	✔
	AS199073	IMPLETECH LIMITED	✔	✔
	AS18040	Aoter Networks Co., Ltd	✔	✔
	AS18044	Kanrays Technology Co., Ltd.	✔	✔
	AS198954	JIAN HUI EN	✘	✔
	AS147049	PacketHub S.A.	✔	✔
	AS6507	Riot Games, Inc	✔	✔
	AS215750	DAQIAN HUANG	✘	✔
	AS55789	TWIDC	✔	✘
	AS25152	RIPE NCC - K-root	✔	✔
	AS131273	CORE WINNER CO.,LIMITED	✔	✘
	AS4780	Digital United Inc.	✔	✔
	AS150771	FUYU Group Inc.	✔	✔
	AS210932	Yu-Cheng Kuo	✘	✔
	AS131643	Chirue Technology Co., Ltd.	✔	✘
	AS141742	Magna Hosting Ltd	✔	✘
	AS55256	Netskope Inc	✔	✘
	AS151338	PoloNetwork Limited	✔	✔
	AS151188	404 Network Information Co.	✔	✔
	AS14447	Infinitron Internet LLC	✘	✔
	AS112	AS112 Project	✔	✔
	AS197817	Yunxiao Bai	✘	✔
	AS200078	Gao Yijia	✘	✔
	AS209109	DataSphere (H.K) Limited	✔	✔
	AS205592	HUANG CHI-HAN	✘	✔
	AS215619	Cheung Yat Hei Sean	✘	✔
	AS216123	ZHU-YUAN JIANG	✘	✔
	AS152622	Powerhouse Co., LTD	✔	✘
	AS60326	0xDEADBEEF LTD	✘	✔
	AS131666	Haosing Technology Co., Ltd.	✔	✘
	AS202776	MOECLUB LTD	✘	✔
	AS150768	Cloud Walker Co., Ltd.	✔	✘
	AS151187	Shen Jiale	✘	✔
	AS18424	CM Craft Aesthetic	✔	✘
	AS27523	Kawaii Networks LLC	✘	✔
	AS30114	Decima LLC	✘	✔
	AS131638	ZUSO Generation Co., Ltd.	✔	✔
	AS17415	Ming Yi Tea Farm	✔	✔
	AS212358	WeiXuan Chang	✔	✔
	AS131605	Inventec Besta CO.,LTD	✔	✔
	AS137922	IBOSS Inc.	✔	✔
	AS203843	Xing-Kai Wang	✔	✔
	AS139299	FGHRSH STUDIO	✔	✔
	AS3856	Packet Clearing House, Inc.	✔	✔
	AS46829	Lamhosting LLC	✔	✔
	AS207314	CHIU NGAI MAN	✘	✔
	AS13150	CATO NETWORKS LTD	✔	✘
	AS215934	XU JIA QIAN	✘	✔
	AS150770	SHINE TECH INFORMATION COMPANY LIMITED	✔	✘
	AS40934	Fortinet Inc.	✔	✘
	AS5065	Bunny Communications	✔	✘
	AS215993	LIU AN LUN	✘	✔
	AS4862	Orange Business AS for Asia	✔	✘
	AS139750	IDCServices.net Inc	✔	✘
	AS202820	Chih-Jen CHENG	✘	✔
	AS213545	Wang Lei	✘	✔
	AS150173	PoloCloud Computing (Hong Kong) Limited	✘	✔
	AS984	Octopus Web Solution Inc.	✘	✔
	AS131657	Hong Da Storage Equipment Co., Ltd.	✘	✔
	AS203309	Liangyi Ma	✘	✔
	AS212360	Jimmy Pan	✘	✔
	AS6642	Hyper Group Network LLC	✔	✘
	AS9917	Li Jing Info Limited	✔	✘
	AS150137	Sky Wise International Limited Taiwan Branch	✔	✘
	AS142061	CORE WINNER CO.,LIMITED TAIWAN BRANCH	✔	✘
	AS199203	CHEN ZHI-HAN	✘	✔
	AS54286	TAIPEI101 NETWORK LLC	✘	✔
	AS131659	NETEASE	✔	✘
	AS211749	BO SIANG CHEN	✘	✔
	AS146834	SiChuan XunYou Network Technologe Limit, co	✔	✘
	AS17718	Taiwan Network Information center	✔	✘
	AS214841	RUI PIN LAI	✘	✔
	AS38852	Fun Finance Technology Co., Ltd.	✔	✘
	AS7713	PT Telkom Indonesia Tbk	✔	✘
	AS63008	SIMPLE CLOUD SOLUTION LLC	✘	✔
	AS63909	Skip Technologies Taiwan Limited	✔	✘
	AS18411	EDT Network Services Limited Co,Ltd.	✔	✘
	AS38853	Paramita Digital Ltd.,	✔	✘
	AS9915	Leemon Professional Consultant	✔	✘
	AS204508	Gatterer Manuel trading as MLGT	✘	✔
	AS214030	Kai-Wen Zheng	✘	✔
	AS63897	vocom international telecom	✔	✘

---

Downstreams

	ASN	Description	IPv4	IPv6
	AS213428	CHIEH SHENG LIN	✘	✔

aut-num:        AS131630
country:        TW
as-name:        LAZCO
admin-c:        TR662-AP
tech-c:         TR662-AP
abuse-c:        TR662-AP
mnt-irt:        IRT-LAZCO-TW
descr:          Lazco Corporation
descr:          6F.-4, No. 26, Zhongshan Dist., Taipei City 104425, Taiwan (R.O.C.)
descr:          Taipei
default:        to AS204844 action pref=100; networks AS131630:AS-LAZCO
default:        to AS20473  action pref=50;  networks AS131630:AS-LAZCO
default:        to AS134823 action pref=90;  networks AS131630:AS-LAZCO
default:        to AS6939   action pref=50;  networks AS131630:AS-LAZCO
default:        to AS32595  action pref=200; networks AS131630:AS-LAZCO
export:         to AS204844 announce AS131630:AS-LAZCO
export:         to AS20473  announce AS131630:AS-LAZCO
export:         to AS134823 announce AS131630:AS-LAZCO
export:         to AS6939   announce AS131630:AS-LAZCO
export:         to AS32595  announce AS131630:AS-LAZCO
import:         from AS204844 action pref=100; accept ANY
import:         from AS20473  action pref=50;  accept ANY
import:         from AS134823 action pref=90;  accept ANY
import:         from AS6939   action pref=50;  accept ANY
import:         from AS32595  action pref=200; accept ANY
remarks:        =========================================
remarks:        Geofeed https://cdn.lazco.tw/geofeed.csv
remarks:        =========================================
remarks:        (oid:LAZCO)
last-modified:  2026-04-10T18:20:11Z
source:         APNIC
mnt-by:         MAINT-TW-TWNIC

Last Update: 2026-06-14T03:22:41Z UTC

---

Member of the following AS-SETs

-	Member
RADB	as-netease
RADB	as134823:as-ipt
RIPE	as-misaka-customers2
RIPE	as-retn-actual-v6
RADB	as131659:as-netease
ARIN	as917:as-customers
RADB	as-tpix-2003
RIPE	as204844:as-customer
RADB	as-twig
RIPE	as-retn-actual-v4
RADB	as-tfn-transit1
APNIC	as45820:as-ttsl
RADB	as-hurricanev6
RADB	as-liberally-intl-customer
RIPE	as216211:as-cyberverse-auto
RADB	as-hurricane
APNIC	as131630:as-lazco
ARIN	as-cyberverse-auto
RADB	as-hinet
APNIC	as154562:as-cyberverse-auto
RADB	as20473:as-vultr
ARIN	as-liberally-intl-customer
NTTCOM	as-tfn-transit1