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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

825 blocks match, ordered by prefix.

Allocated but unannounced blocks, 51 to 100 of 825
PrefixAddressesRegistryCountryAllocated
103.167.196.0/23512APNICVN1st Jun 2021
103.167.198.0/23512APNICVN1st Jun 2021
103.167.86.0/23512APNICVN19th May 2021
103.169.34.0/23512APNICVN25th Jun 2021
103.170.118.0/23512APNICVN26th Jul 2021
103.171.102.0/23512APNICVN10th Aug 2021
103.173.156.0/23512APNICVN22nd Sept 2021
103.173.158.0/23512APNICVN22nd Sept 2021
103.173.254.0/23512APNICVN30th Sept 2021
103.174.218.0/23512APNICVN19th Oct 2021
103.174.220.0/23512APNICVN19th Oct 2021
103.174.72.0/23512APNICVN7th Oct 2021
103.176.164.0/23512APNICVN17th Nov 2021
103.176.168.0/23512APNICVN17th Nov 2021
103.176.92.0/23512APNICVN15th Nov 2021
103.177.164.0/23512APNICVN6th Dec 2021
103.177.34.0/23512APNICVN25th Nov 2021
103.178.102.0/23512APNICVN23rd Dec 2021
103.178.228.0/23512APNICVN30th Dec 2021
103.179.186.0/23512APNICVN17th Jan 2022
103.18.176.0/221kAPNICVN19th Mar 2013
103.180.146.0/23512APNICVN26th Jan 2022
103.180.148.0/23512APNICVN26th Jan 2022
103.186.146.0/23512APNICVN20th Apr 2022
103.186.24.0/23512APNICVN7th Apr 2022
103.188.20.0/23512APNICVN21st May 2022
103.192.236.0/221kAPNICVN23rd Jul 2015
103.196.248.0/221kAPNICVN30th Sept 2015
103.199.12.0/221kAPNICVN22nd Oct 2015
103.199.56.0/221kAPNICVN22nd Oct 2015
103.20.148.0/221kAPNICVN17th Sept 2012
103.200.120.0/221kAPNICVN17th Nov 2015
103.205.100.0/221kAPNICVN29th Dec 2015
103.209.188.0/23512APNICVN31st May 2023
103.213.12.0/23512APNICVN28th Sept 2023
103.215.94.0/23512APNICVN7th Jun 2023
103.22.218.0/23512APNICVN21st Oct 2022
103.221.216.0/221kAPNICVN1st Jun 2016
103.223.4.0/221kAPNICVN3rd Jun 2016
103.23.90.0/23512APNICVN25th Aug 2023
103.231.148.0/221kAPNICVN14th May 2014
103.237.86.0/23512APNICVN12th Jul 2023
103.238.76.0/221kAPNICVN21st Jul 2014
103.24.244.0/221kAPNICVN23rd Apr 2013
103.24.90.0/23512APNICVN25th Oct 2022
103.243.104.0/221kAPNICVN10th Oct 2013
103.245.238.0/23512APNICVN1st Aug 2023
103.248.230.0/23512APNICVN7th Aug 2023
103.254.40.0/221kAPNICVN28th Nov 2013
103.255.84.0/221kAPNICVN26th Dec 2013