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 Mar, 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: 915803
Prefixes after maximum aggregation (per Origin AS): 347771
Deaggregation factor: 2.63
Unique aggregates announced (without unneeded subnets): 446837
Total ASes present in the Internet Routing Table: 74244
Prefixes per ASN: 12.34
Origin-only ASes present in the Internet Routing Table: 63706
Origin ASes announcing only one prefix: 26134
Transit ASes present in the Internet Routing Table: 10538
Transit-only ASes present in the Internet Routing Table:451
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 55
Max AS path prepend of ASN (265020) 50
Prefixes from unregistered ASNs in the Routing Table: 1100
Number of instances of unregistered ASNs: 1115
Number of 32-bit ASNs allocated by the RIRs: 41464
Number of 32-bit ASNs visible in the Routing Table: 34345
Prefixes from 32-bit ASNs in the Routing Table: 168511
Number of bogon 32-bit ASNs visible in the Routing Table:68
Special use prefixes present in the Routing Table:1
Prefixes being announced from unallocated address space:525
Number of addresses announced to Internet: 3063819264
Equivalent to 182 /8s, 158 /16s and 44 /24s
Percentage of available address space announced: 82.8
Percentage of allocated address space announced: 82.8
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: 306446
APNIC Region Analysis Summary
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Prefixes being announced by APNIC Region ASes: 241990
Total APNIC prefixes after maximum aggregation: 69156
APNIC Deaggregation factor:3.50
Prefixes being announced from the APNIC address blocks: 236593
Unique aggregates announced from the APNIC address blocks:97811
APNIC Region origin ASes present in the Internet Routing Table: 13365
APNIC Prefixes per ASN: 17.70
APNIC Region origin ASes announcing only one prefix: 3904
APNIC Region transit ASes present in the Internet Routing Table: 1786
Average APNIC Region AS path length visible:4.4
Max APNIC Region AS path length visible: 38
Number of APNIC region 32-bit ASNs visible in the Routing Table: 8647
Number of APNIC addresses announced to Internet: 773747584
Equivalent to 46 /8s, 30 /16s and 115 /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:268067
Total ARIN prefixes after maximum aggregation: 122019
ARIN Deaggregation factor: 2.20
Prefixes being announced from the ARIN address blocks: 270188
Unique aggregates announced from the ARIN address blocks:130292
ARIN Region origin ASes present in the Internet Routing Table:19066
ARIN Prefixes per ASN:
