This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.
Daily listings are sent to bgp-st...@lists.apnic.net
For historical data, please see http://thyme.rand.apnic.net.
If you have any comments please contact Philip Smith .
Routing Table Report 04:00 +10GMT Sat 11 Apr, 2020
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
BGP routing table entries examined: 805484
Prefixes after maximum aggregation (per Origin AS): 305957
Deaggregation factor: 2.63
Unique aggregates announced (without unneeded subnets): 393305
Total ASes present in the Internet Routing Table: 67689
Prefixes per ASN: 11.90
Origin-only ASes present in the Internet Routing Table: 58122
Origin ASes announcing only one prefix: 24256
Transit ASes present in the Internet Routing Table:9567
Transit-only ASes present in the Internet Routing Table:295
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 38
Max AS path prepend of ASN ( 27978) 31
Prefixes from unregistered ASNs in the Routing Table: 1239
Number of instances of unregistered ASNs: 1242
Number of 32-bit ASNs allocated by the RIRs: 31261
Number of 32-bit ASNs visible in the Routing Table: 25806
Prefixes from 32-bit ASNs in the Routing Table: 119426
Number of bogon 32-bit ASNs visible in the Routing Table:22
Special use prefixes present in the Routing Table:1
Prefixes being announced from unallocated address space: 1117
Number of addresses announced to Internet: 2854271488
Equivalent to 170 /8s, 32 /16s and 186 /24s
Percentage of available address space announced: 77.1
Percentage of allocated address space announced: 77.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.5
Total number of prefixes smaller than registry allocations: 271215
APNIC Region Analysis Summary
-
Prefixes being announced by APNIC Region ASes: 212043
Total APNIC prefixes after maximum aggregation: 61938
APNIC Deaggregation factor:3.42
Prefixes being announced from the APNIC address blocks: 204843
Unique aggregates announced from the APNIC address blocks:85571
APNIC Region origin ASes present in the Internet Routing Table: 10519
APNIC Prefixes per ASN: 19.47
APNIC Region origin ASes announcing only one prefix: 2924
APNIC Region transit ASes present in the Internet Routing Table: 1565
Average APNIC Region AS path length visible:4.6
Max APNIC Region AS path length visible: 35
Number of APNIC region 32-bit ASNs visible in the Routing Table: 5585
Number of APNIC addresses announced to Internet: 766795648
Equivalent to 45 /8s, 180 /16s and 95 /24s
APNIC AS Blocks4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-64098, 64297-64395, 131072-141625
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
222/8, 223/8,
ARIN Region Analysis Summary
Prefixes being announced by ARIN Region ASes:235626
Total ARIN prefixes after maximum aggregation: 108397
ARIN Deaggregation factor: 2.17
Prefixes being announced from the ARIN address blocks: 233072
Unique aggregates announced from the ARIN address blocks:118306
ARIN Region origin ASes present in the Internet Routing Table:18423
ARIN Prefixes per ASN:12.65
ARIN
