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ASN Lookup Tool
AS43872 OPTINET

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS43872
Organisation
Optinet U.K. Limited
Name
OPTINET
Total IPv4 Addresses
6,400
Total IPv4 Prefixes
16
Total IPv6 Prefixes
2
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#12,402 out of 79,063
Registry
Ripe
Registered Country
GB flagGB
Registered Country Name
United Kingdom of Great Britain and Northern Ireland (the)
Registered Date
2016-12-20
Registration Last Change
2025-09-12
Receiving From
ASN
Organisation
AS174
US flagCogent Communications, LLC
AS3257
US flagGTT Communications Inc.
AS3741
ZA flagDimension Data
AS9304
HK flagHGC Global Communications Limited
AS8708
RO flagDIGI ROMANIA S.A.
Showing 5 of 46
IPv4 Active Prefixes
PrefixRange FromRange To
5.253.252.0/225.253.252.05.253.255.255
45.136.108.0/2445.136.108.045.136.108.255
84.38.246.0/2484.38.246.084.38.246.255
91.201.105.0/2491.201.105.091.201.105.255
92.118.111.0/2492.118.111.092.118.111.255
Showing 5 of 16
IPv6 Active Prefixes
PrefixRange FromRange To
2a0b:180::/292a0b:180::2a0b:187:ffff:ffff:ffff:ffff:ffff:ffff
2a10:cac0::/292a10:cac0::2a10:cac7:ffff:ffff:ffff:ffff:ffff:ffff