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
AS48362 TKSWF-AS - Stadtwerke Feldkirch, AT Austria 7,680 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
AS33891 CORE-BACKBONE - Core-Backbone GmbH, DE Germany 0 0 IPv4 IPv4 IPv6 IPv6
AS39351 ESAB-AS - 31173 Services AB, SE Sweden 12,032 4,312,662,016 IPv4 IPv4
AS39120 CONVERGENZE-AS - Convergenze S.p.A., IT Italy 43,520 17,179,869,184 IPv4 IPv4
AS9304 HUTCHISON-AS-AP - HGC Global Communications Limited, HK Hong Kong 2,143,488 12,884,967,424 IPv6 IPv6
AS6461 ZAYO-6461 - Zayo Bandwidth, US United States 1,662,208 17,717,133,312 IPv4 IPv4 IPv6 IPv6
AS12552 GlobalConnect-AS12552 - GlobalConnect AB, SE Sweden 561,920 214,749,216,768 IPv4 IPv4 IPv6 IPv6
AS30781 JAGUAR-AS - Free Pro SAS, FR France 117,248 133,144,051,712 IPv4 IPv4 IPv6 IPv6
AS24482 SGGS-AS-AP - SG.GS, SG Singapore 20,992 4,294,967,296 IPv4 IPv4
AS37100 SEACOM-AS - SEACOM Limited, MU Mauritius 1,072,896 17,179,869,184 IPv4 IPv4
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
AS1031 PEER1-1031 - PEER 1031 LLC, US United States 1,280 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
AS8708 RCS-RDS - DIGI ROMANIA S.A., RO Romania 1,787,136 73,014,509,568 IPv4 IPv4
AS3257 GTT-BACKBONE - GTT Communications Inc., US United States 8,635,904 841,814,704,128 IPv4 IPv4 IPv6 IPv6
AS8966 Etisalat-AS - EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC, AE United Arab Emirates 16,384 4,295,294,976 IPv4 IPv4
AS34177 CELESTE-AS - CELESTE SAS, FR France 289,792 98,784,247,808 IPv4 IPv4
AS137409 GSLNETWORKS-AS-AP - GSL Networks Pty LTD, AU Australia 99,200 77,403,586,560 IPv4 IPv4
AS49544 i3Dnet - i3D.net B.V, NL Netherlands 106,240 351,384,436,736 IPv4 IPv4 IPv6 IPv6
AS18106 VIEWQWEST-SG-AP - Viewqwest Pte Ltd, SG Singapore 53,248 13,153,337,344 IPv4 IPv4 IPv6 IPv6
AS25091 IP-Max - IP-Max SA, CH Switzerland 15,104 68,719,607,808 IPv4 IPv4 IPv6 IPv6
AS37273 BCS - Bandwidth and Cloud Services Group Ltd, UG Uganda 8,192 4,294,967,296 IPv4 IPv4
AS30844 LIQUID-AS - Liquid Telecommunications Ltd, GB United Kingdom 368,640 38,654,705,664 IPv4 IPv4 IPv6 IPv6
AS52320 GlobeNet Cabos Submarinos Colombia, S.A.S., CO Colombia 4,096 8,589,934,592 IPv4 IPv4
AS57463 NetIX - NetIX Communications JSC, BG Bulgaria 256 0 IPv4 IPv4
AS174 COGENT-174 - Cogent Communications, LLC, US United States 35,906,304 185,519,505,408 IPv4 IPv4 IPv6 IPv6
AS13237 LAMBDANET-AS - euNetworks GmbH, DE Germany 570,880 107,374,182,400 IPv4 IPv4
AS14840 BR.Digital Provider, BR Brazil 70,912 14,010,220,544 IPv4 IPv4
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