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 30 Mar, 2019
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
BGP routing table entries examined: 742948
Prefixes after maximum aggregation (per Origin AS): 285249
Deaggregation factor: 2.60
Unique aggregates announced (without unneeded subnets): 358190
Total ASes present in the Internet Routing Table: 63769
Prefixes per ASN: 11.65
Origin-only ASes present in the Internet Routing Table: 54888
Origin ASes announcing only one prefix: 23710
Transit ASes present in the Internet Routing Table:8881
Transit-only ASes present in the Internet Routing Table:269
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 34
Max AS path prepend of ASN ( 25081) 32
Prefixes from unregistered ASNs in the Routing Table:29
Number of instances of unregistered ASNs:32
Number of 32-bit ASNs allocated by the RIRs: 26387
Number of 32-bit ASNs visible in the Routing Table: 21522
Prefixes from 32-bit ASNs in the Routing Table: 94294
Number of bogon 32-bit ASNs visible in the Routing Table:28
Special use prefixes present in the Routing Table:0
Prefixes being announced from unallocated address space:267
Number of addresses announced to Internet: 2845039488
Equivalent to 169 /8s, 147 /16s and 219 /24s
Percentage of available address space announced: 76.8
Percentage of allocated address space announced: 76.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.2
Total number of prefixes smaller than registry allocations: 248634
APNIC Region Analysis Summary
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Prefixes being announced by APNIC Region ASes: 200727
Total APNIC prefixes after maximum aggregation: 57903
APNIC Deaggregation factor:3.47
Prefixes being announced from the APNIC address blocks: 197663
Unique aggregates announced from the APNIC address blocks:82276
APNIC Region origin ASes present in the Internet Routing Table:9640
APNIC Prefixes per ASN: 20.50
APNIC Region origin ASes announcing only one prefix: 2717
APNIC Region transit ASes present in the Internet Routing Table: 1422
Average APNIC Region AS path length visible:4.5
Max APNIC Region AS path length visible: 30
Number of APNIC region 32-bit ASNs visible in the Routing Table: 4617
Number of APNIC addresses announced to Internet: 769678720
Equivalent to 45 /8s, 224 /16s and 93 /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, 131072-139577
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:219503
Total ARIN prefixes after maximum aggregation: 103821
ARIN Deaggregation factor: 2.11
Prefixes being announced from the ARIN address blocks: 218452
Unique aggregates announced from the ARIN address blocks:104995
ARIN Region origin ASes present in the Internet Routing Table:18421
ARIN Prefixes per ASN:11.86
ARIN
