Unrouted space and allocation age, release 2026-11.
A /24 can have a country without being announced on the Internet, and IPv4 was handed out over four decades.
This page shows both for the 14.4M /24s with a country: how much is not routed, and when the
registries allocated it. It explains why "has a country" and "routed" are different numbers elsewhere on the site.
The packages carry the allocation date per /24 (RIRAllocationDate).
See also routing security, data quality and the country coverage map.
When the space was allocated
Share of the /24s with a country, by the decade of their RIR allocation.
Reading the two measures together
ARIN space is the oldest (median allocation year 1998) and AFRINIC space the youngest (2014). ARIN has the largest unrouted share, 13.6%. Unrouted does not mean unused: networks keep internal or reserved space off the public routing table.
By regional registry
Unrouted /24s and the share allocated in each decade.
| RIR | /24 | Unrouted | before 1990 | 1990s | 2000s | 2010s | 2020s | Median year |
|---|---|---|---|---|---|---|---|---|
| ARIN | 6,423,858 | 875,310 13.6% | 9.4% | 43.6% | 19.8% | 17.0% | 10.3% | 1998 |
| APNIC | 3,472,378 | 361,162 10.4% | 2.8% | 12.8% | 56.4% | 27.3% | 0.8% | 2007 |
| RIPE | 3,344,198 | 317,674 9.5% | 3.1% | 29.5% | 47.2% | 19.7% | 0.5% | 2005 |
| LACNIC | 710,689 | 25,893 3.6% | 0.2% | 7.4% | 36.5% | 54.5% | 1.3% | 2010 |
| AFRINIC | 453,747 | 30,954 6.8% | 0.2% | 6.8% | 15.0% | 75.9% | 2.0% | 2014 |
Largest countries
The 40 countries with the most /24s. The full JSON file covers every country with at least 1,000 /24s and has the decade split per country.
| Country | /24 | Unrouted | Allocated before 2000 | Median year |
|---|---|---|---|---|
| United States | 5,843,324 | 842,194 14.4% | 55.9% | 1997 |
| China | 1,347,571 | 198,981 14.8% | 5.0% | 2008 |
| Japan | 781,854 | 74,261 9.5% | 27.7% | 2004 |
| Germany | 546,493 | 31,580 5.8% | 39.8% | 2004 |
| United Kingdom | 509,535 | 107,238 21.1% | 50.6% | 1999 |
| South Korea | 456,635 | 20,299 4.5% | 10.8% | 2007 |
| Brazil | 335,894 | 9,699 2.9% | 6.9% | 2012 |
| France | 324,719 | 27,049 8.3% | 18.4% | 2006 |
| Canada | 286,172 | 50,128 17.5% | 48.5% | 2000 |
| Italy | 227,073 | 6,767 3.0% | 23.1% | 2006 |
| Netherlands | 214,498 | 25,955 12.1% | 45.4% | 2000 |
| Australia | 209,640 | 21,308 10.2% | 33.7% | 2006 |
| India | 196,465 | 17,294 8.8% | 10.4% | 2010 |
| Russia | 180,041 | 5,763 3.2% | 8.4% | 2009 |
| Taiwan | 147,429 | 1,370 0.9% | 18.6% | 2007 |
| Spain | 139,447 | 1,923 1.4% | 16.5% | 2005 |
| Sweden | 129,664 | 16,586 12.8% | 31.9% | 2004 |
| Mexico | 122,660 | 8,514 6.9% | 15.0% | 2007 |
| South Africa | 117,067 | 15,004 12.8% | 24.1% | 2010 |
| Singapore | 113,039 | 12,864 11.4% | 48.1% | 2001 |
| Switzerland | 98,344 | 31,911 32.5% | 60.2% | 1993 |
| Hong Kong SAR China | 95,296 | 3,229 3.4% | 25.0% | 2007 |
| Egypt | 94,703 | 716 0.8% | 0.5% | 2014 |
| Poland | 82,995 | 950 1.1% | 11.6% | 2006 |
| Indonesia | 80,877 | 1,464 1.8% | 6.1% | 2011 |
| Argentina | 76,855 | 1,176 1.5% | 8.7% | 2010 |
| Ireland | 74,279 | 2,896 3.9% | 29.2% | 2008 |
| Colombia | 70,351 | 503 0.7% | 2.9% | 2012 |
| Türkiye | 67,948 | 899 1.3% | 9.0% | 2007 |
| Vietnam | 65,456 | 1,019 1.6% | 0.8% | 2010 |
| Norway | 64,289 | 4,600 7.2% | 49.3% | 2000 |
| Finland | 58,651 | 4,519 7.7% | 44.1% | 2001 |
| Belgium | 56,388 | 8,846 15.7% | 31.6% | 2004 |
| Denmark | 49,815 | 1,763 3.5% | 18.3% | 2005 |
| Saudi Arabia | 48,753 | 2,655 5.5% | 26.1% | 2009 |
| Morocco | 48,125 | 65 0.1% | 0.5% | 2014 |
| Austria | 44,998 | 1,770 3.9% | 32.6% | 2003 |
| Iran | 42,794 | 802 1.9% | 2.5% | 2010 |
| Chile | 41,662 | 3,754 9.0% | 18.6% | 2010 |
| Thailand | 41,619 | 1,109 2.7% | 19.7% | 2008 |
How to read these figures
- Scope: every /24 with a country (the RIR/IANA unallocated reserve is left out).
- Unrouted = the /24 has a country but no origin AS in this release's BGP view: held, internal or idle space, or space announced only as part of a route not seen here.
- Allocation decade = the date of the RIR delegation record that contains the /24 (RIRAllocationDate). '1980s' includes the few earlier records. A block can be used by someone other than its first holder.
- Median year = half of the country's /24s sit in allocations made in or before that year.