Global R&E Routing Table Report 17:05 GMT Sun 25 Jul, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ASREN/ Analysis Summary ---------------- BGP routing table entries examined: 14089 Prefixes after maximum aggregation (per Origin AS): 8312 Deaggregation factor: 1.70 Unique aggregates announced (without unneeded subnets): 9275 Total ASes present in the Internet Routing Table: 2119 Prefixes per ASN: 6.65 Origin-only ASes present in the Internet Routing Table: 1831 Origin ASes announcing only one prefix: 867 Transit ASes present in the Internet Routing Table: 288 Transit-only ASes present in the Internet Routing Table: 35 Average AS path length visible in the Internet Routing Table: 4.5 Max AS path length visible: 16 Max AS path prepend of ASN (207352) 12 Prefixes from unregistered ASNs in the Routing Table: 11 Number of instances of unregistered ASNs: 11 Number of 32-bit ASNs allocated by the RIRs: 36704 Number of 32-bit ASNs visible in the Routing Table: 458 Prefixes from 32-bit ASNs in the Routing Table: 1300 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: 1 Number of addresses announced to Internet: 176335712 Equivalent to 10 /8s, 130 /16s and 171 /24s Percentage of available address space announced: 4.8 Percentage of allocated address space announced: 4.8 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: 1445 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3886 Total APNIC prefixes after maximum aggregation: 2057 APNIC Deaggregation factor: 1.89 Prefixes being announced from the APNIC address blocks: 3888 Unique aggregates announced from the APNIC address blocks: 2286 APNIC Region origin ASes present in the Internet Routing Table: 457 APNIC Prefixes per ASN: 8.51 APNIC Region origin ASes announcing only one prefix: 199 APNIC Region transit ASes present in the Internet Routing Table: 46 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 12 Number of APNIC region 32-bit ASNs visible in the Routing Table: 169 Number of APNIC addresses announced to Internet: 44798688 Equivalent to 2 /8s, 171 /16s and 146 /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, 131072-147769 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: 5399 Total ARIN prefixes after maximum aggregation: 3200 ARIN Deaggregation factor: 1.69 Prefixes being announced from the ARIN address blocks: 5409 Unique aggregates announced from the ARIN address blocks: 3686 ARIN Region origin ASes present in the Internet Routing Table: 850 ARIN Prefixes per ASN: 6.36 ARIN Region origin ASes announcing only one prefix: 307 ARIN Region transit ASes present in the Internet Routing Table: 106 Average ARIN Region AS path length visible: 5.0 Max ARIN Region AS path length visible: 14 Number of ARIN region 32-bit ASNs visible in the Routing Table: 103 Number of ARIN addresses announced to Internet: 70531968 Equivalent to 4 /8s, 52 /16s and 59 /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: 3041 Total RIPE prefixes after maximum aggregation: 2445 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3041 Unique aggregates announced from the RIPE address blocks: 2538 RIPE Region origin ASes present in the Internet Routing Table: 597 RIPE Prefixes per ASN: 5.09 RIPE Region origin ASes announcing only one prefix: 290 RIPE Region transit ASes present in the Internet Routing Table: 96 Average RIPE Region AS path length visible: 3.7 Max RIPE Region AS path length visible: 16 Number of RIPE region 32-bit ASNs visible in the Routing Table: 113 Number of RIPE addresses announced to Internet: 55651488 Equivalent to 3 /8s, 81 /16s and 44 /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: 951 Total LACNIC prefixes after maximum aggregation: 445 LACNIC Deaggregation factor: 2.14 Prefixes being announced from the LACNIC address blocks: 949 Unique aggregates announced from the LACNIC address blocks: 534 LACNIC Region origin ASes present in the Internet Routing Table: 132 LACNIC Prefixes per ASN: 7.19 LACNIC Region origin ASes announcing only one prefix: 52 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 5.1 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 50 Number of LACNIC addresses announced to Internet: 2755936 Equivalent to 0 /8s, 42 /16s and 13 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-272796 + 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: 801 Total AfriNIC prefixes after maximum aggregation: 155 AfriNIC Deaggregation factor: 5.17 Prefixes being announced from the AfriNIC address blocks: 801 Unique aggregates announced from the AfriNIC address blocks: 230 AfriNIC Region origin ASes present in the Internet Routing Table: 44 AfriNIC Prefixes per ASN: 18.20 AfriNIC Region origin ASes announcing only one prefix: 19 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 4.5 Max AfriNIC Region AS path length visible: 9 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 23 Number of AfriNIC addresses announced to Internet: 2593536 Equivalent to 0 /8s, 39 /16s and 147 /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 2907 618 2155 455 UNALLOCATED 7497 429 209 20 UNALLOCATED 1237 192 75 137 UNALLOCATED 7575 179 330 125 UNALLOCATED 58647 176 18 2 UNALLOCATED 4538 168 4192 72 UNALLOCATED 55824 128 19 22 UNALLOCATED 2697 55 3 31 UNALLOCATED 1659 54 1450 34 UNALLOCATED 132524 48 9 11 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 376 213 178 140 UNALLOCATED 5786 201 16 1 UNALLOCATED 2152 155 507 87 UNALLOCATED 18558 137 18 4 UNALLOCATED 270 117 297 87 UNALLOCATED 2920 112 34 6 UNALLOCATED 21976 86 51 18 UNALLOCATED 1736 80 16 1 UNALLOCATED 3477 67 70 39 UNALLOCATED 22742 67 52 33 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 273 1996 235 UNALLOCATED 786 187 1779 185 UNALLOCATED 8895 173 24 4 UNALLOCATED 559 116 550 107 UNALLOCATED 1103 95 1520 84 UNALLOCATED 137 82 677 77 UNALLOCATED 2200 66 647 61 UNALLOCATED 2614 62 32 59 UNALLOCATED 1930 57 81 52 UNALLOCATED 1653 52 151 49 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 117 121 51 UNALLOCATED 11340 94 24 54 UNALLOCATED 1251 65 37 20 UNALLOCATED 2715 51 53 33 UNALLOCATED 4270 44 16 1 UNALLOCATED 61468 41 3 15 UNALLOCATED 28614 38 2 2 UNALLOCATED 28571 37 26 15 UNALLOCATED 20191 31 16 1 UNALLOCATED 3597 23 2 17 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 326 319 72 UNALLOCATED 327687 133 28 3 UNALLOCATED 36914 96 82 3 UNALLOCATED 8094 55 48 4 UNALLOCATED 327700 38 16 1 UNALLOCATED 37215 30 8 1 UNALLOCATED 6879 24 2 9 UNALLOCATED 37501 11 49 6 UNALLOCATED 37182 10 8 1 UNALLOCATED 36982 8 33 8 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 618 2155 455 UNALLOCATED 7497 429 209 20 UNALLOCATED 2018 326 319 72 UNALLOCATED 680 273 1996 235 UNALLOCATED 376 213 178 140 UNALLOCATED 5786 201 16 1 UNALLOCATED 1237 192 75 137 UNALLOCATED 786 187 1779 185 UNALLOCATED 7575 179 330 125 UNALLOCATED 58647 176 18 2 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 429 409 UNALLOCATED 2018 326 254 UNALLOCATED 5786 201 200 UNALLOCATED 58647 176 174 UNALLOCATED 8895 173 169 UNALLOCATED 18558 137 133 UNALLOCATED 327687 133 130 UNALLOCATED 55824 128 106 UNALLOCATED 2920 112 106 UNALLOCATED 4538 168 96 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ASREN/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 36843 UNALLOCATED 64.56.80.0/23 11096 UNALLOCATED 36843 UNALLOCATED 108.59.20.0/24 11096 UNALLOCATED 36843 UNALLOCATED 131.91.183.0/24 11096 UNALLOCATED 14822 UNALLOCATED 140.163.6.0/24 10466 UNALLOCATED 14822 UNALLOCATED 140.163.64.0/24 10466 UNALLOCATED 14822 UNALLOCATED 140.163.70.0/24 10466 UNALLOCATED 14822 UNALLOCATED 140.163.128.0/17 10466 UNALLOCATED 36843 UNALLOCATED 146.201.218.0/24 11096 UNALLOCATED 36843 UNALLOCATED 146.201.219.0/24 11096 UNALLOCATED 22063 UNALLOCATED 153.10.0.0/16 2152 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ASREN/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 164.160.240.0/20 Origin: 328439 UNALLOCATED Transit: 327992 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ASREN/data-add-IANA 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 /10:2 /11:1 /12:10 /13:19 /14:35 /15:102 /16:1672 /17:273 /18:299 /19:446 /20:650 /21:705 /22:1093 /23:1142 /24:7456 /25:75 /26:58 /27:50 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8895 168 173 UNALLOCATED 36914 83 96 UNALLOCATED 23024 53 56 UNALLOCATED 28614 32 38 UNALLOCATED 327700 32 38 UNALLOCATED 25977 29 32 UNALLOCATED 200521 28 44 UNALLOCATED 1916 24 117 UNALLOCATED 2614 24 62 UNALLOCATED 37215 24 30 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/ASREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:15 8:2 12:1 14:84 23:2 24:2 31:1 37:6 38:6 41:138 42:9 44:4 45:36 46:6 49:10 58:4 59:10 60:4 61:3 62:6 63:4 64:13 66:5 67:41 68:1 69:13 72:11 74:16 76:11 77:6 78:3 79:10 80:11 81:29 82:2 83:7 84:3 85:22 86:9 87:1 88:1 89:10 91:45 93:11 94:2 95:4 96:5 101:3 102:8 103:222 104:5 106:1 108:4 109:8 110:3 111:16 112:4 114:18 116:4 117:2 118:17 119:19 121:27 122:8 123:8 124:42 128:65 129:30 130:83 131:90 132:52 133:137 134:83 136:191 137:123 138:10 139:4 140:34 141:2 142:25 143:32 144:27 146:121 147:26 148:7 149:12 150:19 151:5 152:62 153:6 154:24 155:35 156:64 157:25 158:41 159:116 160:25 161:16 162:15 163:59 164:35 165:16 167:16 168:99 169:10 170:40 172:2 173:1 175:20 176:8 177:6 178:1 179:10 180:21 182:5 184:3 185:31 186:2 187:17 188:13 189:6 190:53 191:9 192:1183 193:176 194:97 195:59 196:167 197:4 198:327 199:183 200:160 201:22 202:376 203:290 204:307 205:88 206:138 207:130 208:43 209:92 210:182 211:13 212:168 213:2 216:45 217:15 218:5 219:13 220:9 222:4 223:2 End of report