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	Prefix	Description
	163.138.160.0/19	Nippon Telegraph and Telephone Corporation
	192.47.168.0/23	Nippon Telegraph and Telephone Corporation

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS2518	BIGLOBE Inc.	✔	✘
	AS7521	INTERNET MULTIFEED CO.	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS2518	BIGLOBE Inc.	✔	✘
	AS2511	Nippon Telegraph and Telephone Corporation	✔	✘
	AS6939	Hurricane Electric LLC	✔	✘
	AS7521	INTERNET MULTIFEED CO.	✔	✘
	AS20473	The Constant Company, LLC	✔	✘
	AS8966	Etisalat (ETC)	✔	✘
	AS9370	SAKURA Internet Inc.	✔	✘
	AS24482	SG.GS	✔	✘
	AS2907	Science Information Network	✔	✘
	AS9002	RETN Limited	✔	✘
	AS4651	The Communications Authority of Thailand (CAT)	✔	✘
	AS2635	Automattic, Inc	✔	✘
	AS2515	Japan Network Information Center	✔	✘
	AS20485	TransTeleCom JSC	✔	✘
	AS49544	i3D.net B.V	✔	✘
	AS8849	Melbikomas UAB	✔	✘
	AS63802	Nippon Telegraph and Telephone East Corporation	✔	✘
	AS9299	PLDT (Philippine Long Distance Telephone Company)	✔	✘
	AS60068	Datacamp Limited (CDN77 / DataPacket)	✔	✘
	AS18526	DDPS Networks, LLC	✔	✘
	AS32590	Valve Corporation	✔	✘
	AS23815	Japan Internet Xing Co., Ltd.	✔	✘
	AS17686	ACCELIA	✔	✘
	AS153371	BACK WAVES LIMITED	✔	✘

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Downstreams

	ASN	Description	IPv4	IPv6
	AS2511	Nippon Telegraph and Telephone Corporation	✔	✘

aut-num:        AS173
as-name:        NTTECL-AS
descr:          Nippon Telegraph and Telephone Corporation
country:        JP
org:            ORG-NTAT1-AP
admin-c:        TF79-AP
tech-c:         TF79-AP
abuse-c:        AN845-AP
mnt-lower:      MAINT-JP-NTTECL-JP
mnt-routes:     MAINT-JP-NTTECL-JP
mnt-by:         APNIC-HM
mnt-irt:        IRT-NTTECL-JP
last-modified:  2023-01-11T04:52:30Z
source:         APNIC


organisation:   ORG-NTAT1-AP
org-name:       Nippon Telegraph and Telephone Corporation
org-type:       LIR
country:        JP
address:        3-9-11 Midori-cho Musashino-shi
phone:          +81-422-59-2725
fax-no:         +81-422-59-5637
# Email removed, Log into bgp.tools to see whois emails
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:59Z
source:         APNIC

Last Update: 2025-12-25T03:22:12Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-ocn-v6	204
JPIRR	as-ocn	2
RADB	as-kddi6	833
RADB	as-ocn	2
JPIRR	as-iij	4729
JPIRR	as-hanabi	7
NTTCOM	as-ocn	2
NTTCOM	as-ocn-v6	204
RADB	as-kdd	1155
NTTCOM	as-hanabi	7
ARIN	as1239:as-customers	4238
JPIRR	as-mesh-customer:as173	3
RADB	as-kdddmpeer	192
JPIRR	as-ocn-v6	204
RADB	as-mfeed	9
RADB	as-mesh-customer:as173	3
JPIRR	as-mfeed	9
RADB	as-mapos	3
RADB	as-iij	4729