subnet.im

Allocated but unannounced space

Every block here was allocated or assigned by a regional internet registry, and none of them appeared in any routing table we collected at our last snapshot — neither as a route of their own, nor covered by a larger announcement, nor carved up into more specifics.

“Unannounced” does not mean “unused”

Plenty of allocated space is deliberately kept off the public internet: private interconnects, lab and lawful-intercept ranges, networks reachable only inside one operator, and space held in reserve. Some of it is announced somewhere our collectors cannot see, which is a limit of our vantage points rather than a fact about the block.

It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today. Nothing on this page means a block is unallocated, available, or free to announce.

Browse by registry

Browse by country

Countries with the most unannounced blocks, largest first.

Unannounced blocks

84,954 blocks match, ordered by prefix.

Allocated but unannounced blocks, 3201 to 3250 of 84954
PrefixAddressesRegistryCountryAllocated
103.250.112.0/221kAPNICIN17th Jul 2013
103.250.122.0/23512APNICKH9th Aug 2023
103.250.180.0/221kAPNICCN19th Jul 2013
103.250.200.0/221kAPNICJP22nd Jul 2013
103.250.208.0/23512APNICID9th Aug 2023
103.250.210.0/23512APNICID9th Aug 2023
103.250.224.0/221kAPNICCN23rd Jul 2013
103.250.236.0/221kAPNICCN24th Jul 2013
103.250.8.0/24256APNICAU11th Jul 2013
103.251.14.0/24256APNICID25th Jul 2013
103.251.192.0/221kAPNICCN10th Nov 2015
103.251.4.0/221kAPNICAU25th Jul 2013
103.251.40.0/23512APNICID26th Jul 2013
103.251.64.0/221kAPNICAU29th Jul 2013
103.252.104.0/221kAPNICCN25th Oct 2013
103.252.132.0/221kAPNICHK29th Oct 2013
103.252.140.0/23512APNICIN29th Oct 2013
103.252.204.0/221kAPNICCN4th Nov 2013
103.252.208.0/221kAPNICCN4th Nov 2013
103.252.232.0/221kAPNICCN5th Nov 2013
103.252.243.0/24256APNICIN14th Aug 2023
103.252.248.0/221kAPNICCN6th Nov 2013
103.252.28.0/221kAPNICCN22nd Oct 2013
103.252.40.0/221kAPNICIN22nd Oct 2013
103.252.60.0/221kAPNICIN23rd Oct 2013
103.252.64.0/221kAPNICCN24th Oct 2013
103.252.8.0/23512APNICAU7th Jan 2016
103.252.80.0/221kAPNICPK25th Oct 2013
103.252.85.0/24256APNICID25th Oct 2013
103.252.96.0/221kAPNICCN29th Jun 2016
103.253.112.0/221kAPNICID15th Nov 2013
103.253.120.0/221kAPNICHK18th Nov 2013
103.253.128.0/221kAPNICIN6th Jan 2016
103.253.220.0/221kAPNICCN25th Nov 2013
103.253.224.0/221kAPNICCN25th Nov 2013
103.253.231.0/24256APNICID15th Aug 2023
103.253.232.0/221kAPNICCN25th Nov 2013
103.253.4.0/221kAPNICCN6th Nov 2013
103.253.52.0/221kAPNICIN11th Nov 2013
103.253.71.0/24256APNICIN14th Nov 2013
103.253.84.0/23512APNICJP14th Nov 2013
103.253.96.0/221kARINCA29th Mar 2017
103.254.176.0/221kAPNICCN9th Dec 2013
103.254.197.0/24256APNICID12th May 2023
103.254.198.0/23512APNICUS17th Aug 2016
103.254.20.0/221kAPNICCN26th Nov 2013
103.254.200.0/221kAPNICIN11th Dec 2013
103.254.25.0/24256APNICID27th Nov 2013
103.254.40.0/221kAPNICVN28th Nov 2013
103.254.48.0/23512APNICID28th Nov 2013