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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through RIPE NCC, largest first.

Unannounced blocks registered through RIPE NCC

25,273 blocks match, ordered by prefix.

Allocated but unannounced blocks, 3951 to 4000 of 25273
PrefixAddressesRegistryCountryAllocated
192.153.2.0/24256RIPE NCCGB25th Apr 1997
192.153.3.0/24256RIPE NCCGB27th Mar 1992
192.153.89.0/24256RIPE NCCCH31st Mar 1992
192.155.1.0/24256RIPE NCCNO6th Apr 1992
192.155.2.0/24256RIPE NCCNO6th Apr 1992
192.155.3.0/24256RIPE NCCNO6th Apr 1992
192.155.4.0/24256RIPE NCCNO6th Apr 1992
192.155.5.0/24256RIPE NCCNO6th Apr 1992
192.155.6.0/24256RIPE NCCNO6th Apr 1992
192.156.167.0/24256RIPE NCCGB21st Apr 1992
192.156.210.0/24256RIPE NCCPT30th Apr 1992
192.156.217.0/24256RIPE NCCSC12th Nov 2019
192.156.227.0/24256RIPE NCCBE8th May 1992
192.156.239.0/24256RIPE NCCGB18th May 1992
192.156.248.0/24256RIPE NCCLU29th May 1992
192.157.1.0/24256RIPE NCCNO15th Apr 1992
192.157.129.0/24256RIPE NCCNO14th Feb 1995
192.157.165.0/24256RIPE NCCAT14th Feb 1995
192.157.166.0/23512RIPE NCCAT14th Feb 1995
192.157.168.0/24256RIPE NCCAT14th Feb 1995
192.157.169.0/24256RIPE NCCGB14th Feb 1995
192.157.170.0/24256RIPE NCCGB14th Feb 1995
192.157.171.0/24256RIPE NCCDE14th Feb 1995
192.157.172.0/24256RIPE NCCGB14th Feb 1995
192.157.174.0/24256RIPE NCCGB14th Feb 1995
192.157.176.0/24256RIPE NCCGB14th Feb 1995
192.157.185.0/24256RIPE NCCIT14th Feb 1995
192.157.187.0/24256RIPE NCCGB14th Feb 1995
192.157.189.0/24256RIPE NCCCH14th Feb 1995
192.157.2.0/23512RIPE NCCNO15th Apr 1992
192.158.110.0/23512RIPE NCCGB21st Apr 1992
192.158.118.0/23512RIPE NCCGB21st Apr 1992
192.159.105.0/24256RIPE NCCNL6th May 1992
192.159.108.0/24256RIPE NCCNO6th May 1992
192.159.109.0/24256RIPE NCCIE6th May 1992
192.159.118.0/24256RIPE NCCIE7th May 1992
192.159.122.0/24256RIPE NCCFI7th May 1992
192.159.70.0/24256RIPE NCCFI28th Apr 1992
192.159.73.0/24256RIPE NCCGB28th Apr 1992
192.159.77.0/24256RIPE NCCIT29th Apr 1992
192.159.84.0/24256RIPE NCCES29th Apr 1992
192.159.85.0/24256RIPE NCCES29th Apr 1992
192.159.90.0/24256RIPE NCCBE5th May 1992
192.159.95.0/24256RIPE NCCDE28th Apr 1992
192.16.123.0/24256RIPE NCCSE22nd Jul 1986
192.16.128.0/24256RIPE NCCSE22nd Jul 1986
192.16.129.0/24256RIPE NCCSE22nd Jul 1986
192.16.130.0/24256RIPE NCCSE22nd Jul 1986
192.16.138.0/24256RIPE NCCSE22nd Jul 1986
192.16.139.0/24256RIPE NCCSE23rd Oct 1992