AS131987 MC Digital Realty, Inc.

MCDR-NRT - MC Digital Realty, Inc. · registered in Japan

IPv4 addresses2,0482 prefixes · <0.001% of announced IPv4

Rank in Japan#456largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#21,783of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryJapan745 ASNs registered there

Open AS131987 in ASN lookup Look up an IP in this network (43.231.216.1) All networks in Japan

IPv4 prefixes

All 2 prefixes, in address order.

43.231.216.0/22
43.252.240.0/22

IPv6 prefixes

All 1 prefix.

2400:32a0::/32

Other ASNs named MC Digital Realty, Inc.

1 other network uses the same organisation name; together with AS131987 they announce 3,072 IPv4 addresses.

ASNNameIPv4 addresses

AS131963MCDR-KIX - MC Digital Realty, Inc. JP1,024

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS63774#453 KAMOIKE-NET - Kamoike.net LLP2,048

AS131971#454 AS131971-67 - JPNIC-4Byte-ASBLOCK-AP2,048

AS131986#455 BB4U-NET - ITOCHU Cable Systems Corp.2,048

AS146976#457 KNET - Kvision Co.,Ltd.2,048

AS7513#458 SHIELD - Hitachi Systems, Ltd.2,048

AS18076#459 WCE-IAMAS - Institute of Advanced Media Arts and Sciences2,048

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources