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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.

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Countries with unannounced space registered through RIPE NCC, largest first.

Unannounced blocks registered through RIPE NCC

25,269 blocks match, ordered by prefix.

Allocated but unannounced blocks, 551 to 600 of 25269
PrefixAddressesRegistryCountryAllocated
149.19.144.0/212kRIPE NCCDE1st Jun 1993
149.19.152.0/221kRIPE NCCDE1st Jun 1993
149.191.0.0/1665.5kRIPE NCCGB13th May 1991
149.192.0.0/14262kRIPE NCCGB13th May 1991
149.196.0.0/1665.5kRIPE NCCGB13th May 1991
149.197.0.0/1665.5kRIPE NCCFI13th May 1991
149.207.0.0/1665.5kRIPE NCCDE10th Jan 1994
149.212.0.0/1665.5kRIPE NCCDE1st Jan 1984
149.213.0.0/1665.5kRIPE NCCDE1st Sept 1993
149.232.189.0/24256RIPE NCCFR1st Jan 1984
149.233.64.0/1816.4kRIPE NCCDE5th May 1993
149.245.0.0/1665.5kRIPE NCCDE1st Sept 1993
149.246.0.0/1665.5kRIPE NCCDE28th Sept 1992
149.249.0.0/212kRIPE NCCDE1st Sept 1993
149.249.10.0/23512RIPE NCCDE1st Sept 1993
149.251.0.0/1665.5kRIPE NCCFR1st Apr 2005
149.255.160.0/212kRIPE NCCRU22nd Aug 2011
149.49.0.0/1665.5kRIPE NCCIL10th Aug 2009
149.59.0.0/1665.5kRIPE NCCNL28th Apr 1997
149.62.128.0/204.1kRIPE NCCIT22nd Jul 2011
149.62.56.0/212kRIPE NCCDE21st Oct 2011
150.205.0.0/1665.5kRIPE NCCCH7th Jun 1991
150.213.0.0/1665.5kRIPE NCCCH11th Jun 1991
150.237.112.0/212kRIPE NCCNL12th Aug 1991
150.237.120.0/221kRIPE NCCNL12th Aug 1991
150.237.124.0/23512RIPE NCCNL12th Aug 1991
150.237.126.0/23512RIPE NCCPT12th Aug 1991
150.237.128.0/1732.8kRIPE NCCGB12th Aug 1991
150.237.16.0/204.1kRIPE NCCGB12th Aug 1991
150.237.64.0/198.2kRIPE NCCNL12th Aug 1991
150.237.96.0/204.1kRIPE NCCNL12th Aug 1991
150.251.16.0/204.1kRIPE NCCUS19th Aug 1991
150.251.192.0/204.1kRIPE NCCUS19th Aug 1991
150.251.208.0/204.1kRIPE NCCGB19th Aug 1991
150.251.248.0/221kRIPE NCCFR19th Aug 1991
150.251.48.0/212kRIPE NCCNL19th Aug 1991
150.251.56.0/23512RIPE NCCCH19th Aug 1991
150.251.60.0/23512RIPE NCCNL19th Aug 1991
150.251.62.0/23512RIPE NCCNL19th Aug 1991
151.123.192.0/198.2kRIPE NCCUS17th Jun 1991
151.175.0.0/1665.5kRIPE NCCEU1st Sept 1993
151.180.0.0/1665.5kRIPE NCCGB17th Sept 1991
151.184.0.0/1665.5kRIPE NCCNL17th Sept 1991
151.185.0.0/198.2kRIPE NCCUS17th Sept 1991
151.2.20.0/221kRIPE NCCIT13th May 1991
151.2.24.0/212kRIPE NCCIT13th May 1991
151.211.0.0/1665.5kRIPE NCCGB25th Sept 1991
151.212.0.0/1665.5kRIPE NCCGB25th Sept 1991
151.216.112.0/212kRIPE NCCAT12th Aug 2026
151.216.120.0/221kRIPE NCCAT12th Aug 2026