AS8220

Name: AS8220 — COLT Technology Services Group Limited
Creator: ipdex

COLT Technology Services Group Limited ISP registered in Japan

152IPv4 prefixes

19IPv6 prefixes

90%RPKI-valid

#53AS Rank

#23Rank in Japan

1997-02-24Allocated

COLT Technology Services Group Limited (AS8220) — ISP, registered in Japan. announces 152 IPv4 prefixes + 19 IPv6 prefixes. Rank in Japan: #23. Allocated: 1997-02-24.

IPv4 152IPv6 19

Announced prefixes · 171

v4 103.138.100.0/22 valid
v4 103.248.76.0/24 valid
v4 110.50.78.0/23 valid
v4 116.83.0.0/17 valid
v4 118.67.224.0/19 valid
v4 134.128.168.0/22 valid
v4 136.225.0.0/16 valid
v4 145.224.32.0/23 valid
v4 148.109.0.0/16 valid
v4 148.109.25.0/24 valid
v4 153.96.140.0/24 valid
v4 153.96.141.0/24 valid
v4 154.16.166.0/24 valid
v4 155.45.128.0/24 valid
v4 157.120.224.0/21 valid
v4 157.120.236.0/22 valid
v4 157.120.240.0/20 valid
v4 157.2.32.0/19 unknown
v4 157.2.48.0/21 unknown
v4 157.2.52.0/24 unknown
v4 158.162.192.0/18 valid
v4 158.162.32.0/19 valid
v4 178.159.176.0/20 valid
v4 185.138.136.0/22 unknown
v4 185.157.227.0/24 unknown
v4 185.194.232.0/23 valid
v4 185.247.126.0/24 unknown
v4 192.103.52.0/24 unknown
v4 192.109.56.0/24 unknown
v4 192.187.137.0/24 valid
v4 192.231.17.0/24 valid
v4 192.51.54.0/24 unknown
v4 193.102.132.0/24 valid
v4 193.111.24.0/23 valid
v4 193.118.224.0/19 valid
v4 193.134.159.0/24 valid
v4 193.141.139.0/24 valid
v4 193.16.155.0/24 valid
v4 193.16.48.0/21 valid
v4 193.16.56.0/22 valid
v4 193.16.60.0/23 valid
v4 193.16.62.0/24 valid
v4 193.17.178.0/24 valid
v4 193.183.185.0/24 valid
v4 193.228.0.0/24 valid
v4 193.235.44.0/24 valid
v4 193.235.45.0/24 valid
v4 193.30.84.0/24 valid
v4 193.33.182.0/23 valid
v4 193.36.242.0/24 valid

RPKI: rpki.cloudflare.com · 2026-06-19

— Routing status unavailable

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	172
2026-06-13	172
2026-06-14	172
2026-06-17	172
2026-06-19	171

Internet Exchanges · 54

DE-CIX Frankfurt Frankfurt 800 Gbps
LINX LON1 London 400 Gbps
AMS-IX Amsterdam 200 Gbps
France-IX Paris Paris 200 Gbps
BBIX Tokyo Tokyo 100 Gbps
BCIX Berlin 100 Gbps
DE-CIX Dusseldorf Düsseldorf 100 Gbps
DE-CIX Madrid Madrid 100 Gbps
DE-CIX Marseille Marseille 100 Gbps
DE-CIX Munich Munich 100 Gbps
ESpanix Madrid Lower LAN Madrid 100 Gbps
ESpanix Madrid Upper LAN Madrid 100 Gbps
Equinix Singapore Singapore 100 Gbps
France-IX Marseille Marseille 100 Gbps
GigaPIX - LAN 1 Lisbon 100 Gbps
HKIX Hong Kong 100 Gbps
INEX LAN1 Dublin 100 Gbps
JPIX TOKYO Tokyo 100 Gbps
JPNAP Tokyo Tokyo 100 Gbps
LONAP London 100 Gbps
MIX-IT Milan 100 Gbps
NYIIX New York New York 100 Gbps
Namex Rome Rome 100 Gbps
Netnod Copenhagen BLUE -- MTU9K Malmo / Copenhagen 100 Gbps
Netnod Copenhagen GREEN -- MTU9K Malmo / Copenhagen 100 Gbps

+29

Facilities · 201

201 Facilities · 20 Countries

AT TOKYO (CC1/CC2) Tokyo
ATMAN Data Center Warsaw-2 (WAW-2, Konstruktorska 5) Warsaw
Aruba IT3 - Milan PSP Ponte San Pietro
AtlasEdge DC Amsterdam AMS001 Amsterdam
AtlasEdge DC Barcelona BCN001 Barcelona
AtlasEdge DC Berlin BER001 Berlin
AtlasEdge DC Brussels BRU001 Brussels
AtlasEdge DC Copenhagen CPH001 Copenhagen
AtlasEdge DC Hamburg HAM001 Hamburg
AtlasEdge DC London LYC001 London
AtlasEdge DC Madrid MAD001 Madrid
AtlasEdge DC Milan LIN001 Milan
AtlasEdge DC Paris CDG001 Paris
AtlasEdge DC Zurich ZRH001 Zurich
Avenida Montes Sierra 36, Sevilla Seville
BDx SIN1 - Singapore Singapore
Bancadati.ch SA Data Center Manno
CERN Geneva Meyrin
COLT DC Frankfurt Frankfurt
COLT DC London London
COLT DC London II London
COLT DC Paris II Paris
COLT DC Paris III Paris
COLT DC Paris SouthWest Paris
COLT DC Roosendaal Rosendaal

+176

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AS8220

Announced prefixes · 171

Prefix history

Internet Exchanges · 54

Facilities · 201

AS topology · Customer cone 1,433

Providers · 5

Peers · 929

Customers · 1,066

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