AS Number
AS43872
AS Name
OPTINET
Org Name
Optinet U.K. Limited
Registry

ripe

RegDate

N/A

Updated

2025-09-12T11:34:57Z

AS43872 Looking Glass
IPv4Prefixes

16

IPv6Prefixes

2

IPv4 NUMs

6,400

IPv6 NUMs(/64)

68,719,476,736

6,400 IPv4 Addresses
CIDR Description IP Num
5.253.252.0/22 Optinet U.K. Limited 1024
45.136.108.0/24 Optinet U.K. Limited 256
84.38.246.0/24 Harrods International Ltd 256
91.201.105.0/24 Guaranty Trust Bank (UK) Limited 256
92.118.111.0/24 Optinet U.K. Limited 256
176.101.169.0/24 Optinet U.K. Limited 256
185.183.20.0/22 Optinet U.K. Limited 1024
185.187.61.0/24 Optinet U.K. Limited 256
185.253.176.0/22 Optinet U.K. Limited 1024
193.105.189.0/24 Optinet U.K. Limited 256
193.247.94.0/24 Optinet U.K. Limited 256
193.247.101.0/24 Optinet U.K. Limited 256
193.247.103.0/24 Optinet U.K. Limited 256
193.247.165.0/24 Optinet U.K. Limited 256
195.234.28.0/24 Optinet U.K. Limited 256
217.198.183.0/24 Optinet U.K. Limited 256
CIDR Description IP NUMs(prefix /64)
2a0b:180::/29 Optinet U.K. Limited 34359738368
2a10:cac0::/29 Optinet U.K. Limited 34359738368
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS174 COGENT-174 - Cogent Communications, LLC, US United States 35,906,304 185,519,505,408 IPv4 IPv4 IPv6 IPv6
AS1031 PEER1-1031 - PEER 1031 LLC, US United States 1,280 4,294,967,296 IPv4 IPv4
AS33891 CORE-BACKBONE - Core-Backbone GmbH, DE Germany 0 0 IPv4 IPv4 IPv6 IPv6
AS39120 CONVERGENZE-AS - Convergenze S.p.A., IT Italy 43,520 17,179,869,184 IPv4 IPv4
AS57463 NetIX - NetIX Communications JSC, BG Bulgaria 256 0 IPv4 IPv4
AS3257 GTT-BACKBONE - GTT Communications Inc., US United States 8,635,904 841,814,704,128 IPv4 IPv4 IPv6 IPv6
AS12552 GlobalConnect-AS12552 - GlobalConnect AB, SE Sweden 561,920 214,749,216,768 IPv4 IPv4 IPv6 IPv6
AS13237 LAMBDANET-AS - euNetworks GmbH, DE Germany 570,880 107,374,182,400 IPv4 IPv4
AS18106 VIEWQWEST-SG-AP - Viewqwest Pte Ltd, SG Singapore 53,248 13,153,337,344 IPv4 IPv4 IPv6 IPv6
AS37100 SEACOM-AS - SEACOM Limited, MU Mauritius 1,072,896 17,179,869,184 IPv4 IPv4
AS39351 ESAB-AS - 31173 Services AB, SE Sweden 12,032 4,312,662,016 IPv4 IPv4
AS6461 ZAYO-6461 - Zayo Bandwidth, US United States 1,662,208 17,717,133,312 IPv4 IPv4 IPv6 IPv6
AS8708 RCS-RDS - DIGI ROMANIA S.A., RO Romania 1,787,136 73,014,509,568 IPv4 IPv4
AS25091 IP-Max - IP-Max SA, CH Switzerland 15,104 68,719,607,808 IPv4 IPv4 IPv6 IPv6
AS48362 TKSWF-AS - Stadtwerke Feldkirch, AT Austria 7,680 4,294,967,296 IPv4 IPv4
AS6939 HURRICANE - Hurricane Electric LLC, US United States 581,888 282,627,370,713,088 IPv4 IPv4 IPv6 IPv6
AS34177 CELESTE-AS - CELESTE SAS, FR France 289,792 98,784,247,808 IPv4 IPv4
AS52320 GlobeNet Cabos Submarinos Colombia, S.A.S., CO Colombia 4,096 8,589,934,592 IPv4 IPv4
AS14840 BR.Digital Provider, BR Brazil 70,912 14,010,220,544 IPv4 IPv4
AS24482 SGGS-AS-AP - SG.GS, SG Singapore 20,992 4,294,967,296 IPv4 IPv4
AS1267 ASN-WINDTRE - WIND TRE S.P.A., IT Italy 7,158,528 2,233,382,993,920 IPv4 IPv4
AS30781 JAGUAR-AS - Free Pro SAS, FR France 117,248 133,144,051,712 IPv4 IPv4 IPv6 IPv6
AS58511 ANYCAST-GLOBAL-BACKBONE - Anycast Holdings Pty Ltd, AU Australia 22,528 8,589,934,592 IPv4 IPv4
AS60602 INOVARE-AS - Inovare-Prim SRL, MD Moldova 3,584 4,294,967,296 IPv4 IPv4
AS137409 GSLNETWORKS-AS-AP - GSL Networks Pty LTD, AU Australia 99,200 77,403,586,560 IPv4 IPv4
AS9304 HUTCHISON-AS-AP - HGC Global Communications Limited, HK Hong Kong 2,143,488 12,884,967,424 IPv6 IPv6
AS8966 Etisalat-AS - EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC, AE United Arab Emirates 16,384 4,295,294,976 IPv4 IPv4
AS30844 LIQUID-AS - Liquid Telecommunications Ltd, GB United Kingdom 368,640 38,654,705,664 IPv4 IPv4 IPv6 IPv6
AS37273 BCS - Bandwidth and Cloud Services Group Ltd, UG Uganda 8,192 4,294,967,296 IPv4 IPv4
AS49544 i3Dnet - i3D.net B.V, NL Netherlands 106,240 351,384,436,736 IPv4 IPv4 IPv6 IPv6
as-block:       AS43075 - AS44168
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:        2023-12-11T15:09:58Z
last-modified:  2023-12-11T15:09:58Z
source:         RIPE



aut-num:        AS43872
as-name:        OPTINET
org:            ORG-OUL4-RIPE
import:         from AS174 accept ANY
export:         to AS174 announce AS43872
import:         from AS3257 accept ANY
export:         to AS3257 announce AS43872
import:         from AS6461 accept ANY
export:         to AS6461 announce AS43872
admin-c:        SP16055-RIPE
tech-c:         NO1784-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         uk-optinet-1-mnt
created:        2016-12-20T14:17:07Z
last-modified:  2025-09-12T11:34:57Z
source:         RIPE

organisation:   ORG-OUL4-RIPE
org-name:       Optinet U.K. Limited
country:        GB
org-type:       LIR
address:        Floor 24 One Canada Square
address:        E14 5AA
address:        London
address:        UNITED KINGDOM
phone:          +442033193701
e-mail:         [email protected]
admin-c:        SP16055-RIPE
tech-c:         NO1784-RIPE
abuse-c:        AR56859-RIPE
mnt-ref:        uk-optinet-1-mnt
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         uk-optinet-1-mnt
created:        2016-12-19T14:53:59Z
last-modified:  2024-04-04T11:04:20Z
source:         RIPE

role:           Network Operations
address:        Skyline Plaza, 45 Victoria Avenue
address:        SS2 6BB
address:        Southend-ON-Sea
address:        UNITED KINGDOM
phone:          +4402033193701
e-mail:         [email protected]
nic-hdl:        NO1784-RIPE
mnt-by:         uk-optinet-1-mnt
created:        2019-11-19T09:00:25Z
last-modified:  2019-11-19T09:00:25Z
source:         RIPE

person:         Sean Pearman
address:        Skyline Plaza
address:        45 Victoria Avenue
address:        Southend
address:        Essex
phone:          +44(0)2033193701
nic-hdl:        SP16055-RIPE
mnt-by:         uk-optinet-1-mnt
created:        2016-12-19T14:53:59Z
last-modified:  2019-03-11T14:30:26Z
source:         RIPE