Global R&E Routing Table Report 19:10 GMT Tue 21 Dec, 2021 BGP Table (R&E) as seen at PERN. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/PERN/ Analysis Summary ---------------- BGP routing table entries examined: 3770 Prefixes after maximum aggregation (per Origin AS): 2496 Deaggregation factor: 1.51 Unique aggregates announced (without unneeded subnets): 2792 Total ASes present in the Internet Routing Table: 574 Prefixes per ASN: 6.57 Origin-only ASes present in the Internet Routing Table: 494 Origin ASes announcing only one prefix: 217 Transit ASes present in the Internet Routing Table: 80 Transit-only ASes present in the Internet Routing Table: 25 Average AS path length visible in the Internet Routing Table: 8.8 Max AS path length visible: 20 Max AS path prepend of ASN ( 7650) 8 Prefixes from unregistered ASNs in the Routing Table: 0 Number of instances of unregistered ASNs: 0 Number of 32-bit ASNs allocated by the RIRs: 38135 Number of 32-bit ASNs visible in the Routing Table: 131 Prefixes from 32-bit ASNs in the Routing Table: 281 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 0 Number of addresses announced to Internet: 46372608 Equivalent to 2 /8s, 195 /16s and 151 /24s Percentage of available address space announced: 1.3 Percentage of allocated address space announced: 1.3 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: 221 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 1084 Total APNIC prefixes after maximum aggregation: 730 APNIC Deaggregation factor: 1.48 Prefixes being announced from the APNIC address blocks: 1085 Unique aggregates announced from the APNIC address blocks: 909 APNIC Region origin ASes present in the Internet Routing Table: 216 APNIC Prefixes per ASN: 5.02 APNIC Region origin ASes announcing only one prefix: 111 APNIC Region transit ASes present in the Internet Routing Table: 36 Average APNIC Region AS path length visible: 7.3 Max APNIC Region AS path length visible: 20 Number of APNIC region 32-bit ASNs visible in the Routing Table: 92 Number of APNIC addresses announced to Internet: 11353600 Equivalent to 0 /8s, 173 /16s and 62 /24s APNIC AS Blocks 4608-4864, 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: 2686 Total ARIN prefixes after maximum aggregation: 1766 ARIN Deaggregation factor: 1.52 Prefixes being announced from the ARIN address blocks: 2685 Unique aggregates announced from the ARIN address blocks: 1883 ARIN Region origin ASes present in the Internet Routing Table: 333 ARIN Prefixes per ASN: 8.06 ARIN Region origin ASes announcing only one prefix: 106 ARIN Region transit ASes present in the Internet Routing Table: 37 Average ARIN Region AS path length visible: 9.4 Max ARIN Region AS path length visible: 16 Number of ARIN region 32-bit ASNs visible in the Routing Table: 39 Number of ARIN addresses announced to Internet: 35019008 Equivalent to 2 /8s, 22 /16s and 89 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-401308 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 47/8, 48/8, 50/8, 52/8, 53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 0 Total RIPE prefixes after maximum aggregation: 0 RIPE Deaggregation factor: -nan Prefixes being announced from the RIPE address blocks: 0 Unique aggregates announced from the RIPE address blocks: 0 RIPE Region origin ASes present in the Internet Routing Table: 0 RIPE Prefixes per ASN: -nan RIPE Region origin ASes announcing only one prefix: 0 RIPE Region transit ASes present in the Internet Routing Table: 0 Average RIPE Region AS path length visible: -nan Max RIPE Region AS path length visible: 0 Number of RIPE region 32-bit ASNs visible in the Routing Table: 0 Number of RIPE addresses announced to Internet: 0 Equivalent to 0 /8s, 0 /16s and 0 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-213403 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 0 Total LACNIC prefixes after maximum aggregation: 0 LACNIC Deaggregation factor: -nan Prefixes being announced from the LACNIC address blocks: 0 Unique aggregates announced from the LACNIC address blocks: 0 LACNIC Region origin ASes present in the Internet Routing Table: 0 LACNIC Prefixes per ASN: -nan LACNIC Region origin ASes announcing only one prefix: 0 LACNIC Region transit ASes present in the Internet Routing Table: 0 Average LACNIC Region AS path length visible: -nan Max LACNIC Region AS path length visible: 0 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0 Number of LACNIC addresses announced to Internet: 0 Equivalent to 0 /8s, 0 /16s and 0 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-273820 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 0 Total AfriNIC prefixes after maximum aggregation: 0 AfriNIC Deaggregation factor: -nan Prefixes being announced from the AfriNIC address blocks: 0 Unique aggregates announced from the AfriNIC address blocks: 0 AfriNIC Region origin ASes present in the Internet Routing Table: 0 AfriNIC Prefixes per ASN: -nan AfriNIC Region origin ASes announcing only one prefix: 0 AfriNIC Region transit ASes present in the Internet Routing Table: 0 Average AfriNIC Region AS path length visible: -nan Max AfriNIC Region AS path length visible: 0 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0 Number of AfriNIC addresses announced to Internet: 0 Equivalent to 0 /8s, 0 /16s and 0 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 45/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 7575 175 330 123 AARNET-AS-AP Australian Academic and Re 45773 45 3 5 HECPERN-AS-PK PERN AS Content Servie Pr 1659 39 1466 35 ERX-TANET-ASN1 Taiwan Academic Network 17862 34 10 34 KWNU-AS-KR Kangwon National University, 9270 32 5 6 APAN-KR-AS National Infomation Society 134096 27 3 18 EHEALTHNSW-AS-AP eHealth NSW, AU 9708 26 7 22 PKNU-AS Pukyong National University, KR 24151 26 2 9 CNNIC-CRITICAL-AP China Internet Networ 38345 26 2 9 ZDNS Internet Domain Name System Beijin 7560 25 10 10 CHONBUK-AS Jeonbuk National University, Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 668 212 702 180 DNIC-AS-00668, US 376 203 178 152 RISQ-AS, CA 2152 145 507 84 CSUNET-NW, US 18558 132 16 1 NETBLK-RCOEK, US 2920 108 34 6 LACOE, US 15296 65 5 55 CYBERA, CA 23024 56 4 3 OCDE, US 271 55 26 45 BCNET-AS, CA 6360 55 62 7 UNIVHAWAII, US 27609 45 5 21 USC-UNIVERSITY-HOSPITAL, US Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 668 212 702 180 DNIC-AS-00668, US 376 203 178 152 RISQ-AS, CA 7575 175 330 123 AARNET-AS-AP Australian Academic and Re 2152 145 507 84 CSUNET-NW, US 18558 132 16 1 NETBLK-RCOEK, US 2920 108 34 6 LACOE, US 15296 65 5 55 CYBERA, CA 23024 56 4 3 OCDE, US 271 55 26 45 BCNET-AS, CA 6360 55 62 7 UNIVHAWAII, US Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 18558 132 131 NETBLK-RCOEK, US 2920 108 102 LACOE, US 2152 145 61 CSUNET-NW, US 23024 56 53 OCDE, US 7575 175 52 AARNET-AS-AP Australian Academic and Research N 376 203 51 RISQ-AS, CA 6360 55 48 UNIVHAWAII, US 45773 45 40 HECPERN-AS-PK PERN AS Content Servie Provider, 22315 29 28 SBCSS, US 16796 43 27 MERLIN-NET, CA Complete listing at https://bgp.nsrc.org/REN/PERN/data-CIDRnet Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:0 /9:1 /10:1 /11:1 /12:1 /13:2 /14:5 /15:6 /16:359 /17:44 /18:76 /19:100 /20:164 /21:152 /22:245 /23:269 /24:2344 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 23024 53 56 OCDE, US 27609 29 45 USC-UNIVERSITY-HOSPITAL, US 16796 16 43 MERLIN-NET, CA 5653 13 17 UCSF, US 2920 10 108 LACOE, US 47 8 13 USC-AS, US 30713 7 7 YRDSB, CA 2152 6 145 CSUNET-NW, US 54032 6 11 SEATTLEPACIFICUNIV, US 271 5 55 BCNET-AS, CA Complete listing at https://bgp.nsrc.org/REN/PERN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 6:4 23:1 38:2 42:3 44:1 45:2 59:3 61:3 63:31 64:14 66:3 68:6 69:5 72:5 96:5 101:4 103:145 104:1 106:1 107:1 108:2 110:3 111:16 112:4 114:10 116:5 119:3 121:17 125:2 128:52 130:8 131:43 132:11 134:18 137:18 138:7 139:1 140:17 142:40 143:6 146:1 147:4 150:6 152:3 153:1 155:3 156:64 159:1 161:1 162:8 163:27 164:7 165:1 167:7 168:8 169:4 175:23 180:5 182:5 184:2 192:295 198:195 199:153 202:90 203:194 204:183 205:81 206:123 207:142 208:4 209:86 210:8 211:11 214:7 216:29 218:23 219:1 220:10 222:2 End of report