This is an automated weekly mailing describing the state of the Global
IPv4 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 https://thyme.apnic.net.
If you have any comments please contact Philip Smith .
IPv4 Routing Table Report 04:00 +10GMT Sat 18 Feb, 2023
BGP Table (Global) as seen in Japan.
Report Website: https://thyme.apnic.net
Detailed Analysis: https://thyme.apnic.net/current/
Analysis Summary
BGP routing table entries examined: 920998
Prefixes after maximum aggregation (per Origin AS): 348514
Deaggregation factor: 2.64
Unique aggregates announced (without unneeded subnets): 446349
Total ASes present in the Internet Routing Table: 74146
Prefixes per ASN: 12.42
Origin-only ASes present in the Internet Routing Table: 63618
Origin ASes announcing only one prefix: 26104
Transit ASes present in the Internet Routing Table: 10528
Transit-only ASes present in the Internet Routing Table:443
Average AS path length visible in the Internet Routing Table: 4.2
Max AS path length visible: 55
Max AS path prepend of ASN (265020) 50
Prefixes from unregistered ASNs in the Routing Table: 1061
Number of instances of unregistered ASNs: 1071
Number of 32-bit ASNs allocated by the RIRs: 41203
Number of 32-bit ASNs visible in the Routing Table: 34191
Prefixes from 32-bit ASNs in the Routing Table: 167381
Number of bogon 32-bit ASNs visible in the Routing Table:29
Special use prefixes present in the Routing Table:1
Prefixes being announced from unallocated address space:589
Number of addresses announced to Internet: 3063279232
Equivalent to 182 /8s, 149 /16s and 238 /24s
Percentage of available address space announced: 82.7
Percentage of allocated address space announced: 82.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.6
Total number of prefixes smaller than registry allocations: 312783
APNIC Region Analysis Summary
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Prefixes being announced by APNIC Region ASes: 241118
Total APNIC prefixes after maximum aggregation: 69086
APNIC Deaggregation factor:3.49
Prefixes being announced from the APNIC address blocks: 235992
Unique aggregates announced from the APNIC address blocks:97957
APNIC Region origin ASes present in the Internet Routing Table: 13308
APNIC Prefixes per ASN: 17.73
APNIC Region origin ASes announcing only one prefix: 3861
APNIC Region transit ASes present in the Internet Routing Table: 1781
Average APNIC Region AS path length visible:4.5
Max APNIC Region AS path length visible: 26
Number of APNIC region 32-bit ASNs visible in the Routing Table: 8581
Number of APNIC addresses announced to Internet: 773670912
Equivalent to 46 /8s, 29 /16s and 72 /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, 131072-151865
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:267489
Total ARIN prefixes after maximum aggregation: 121496
ARIN Deaggregation factor: 2.20
Prefixes being announced from the ARIN address blocks: 269494
Unique aggregates announced from the ARIN address blocks:130285
ARIN Region origin ASes present in the Internet Routing Table:19064
ARIN Prefixes per ASN:
