Global R&E Routing Table Report 22:00 GMT Sun 25 Jul, 2021 Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Internet2/ Analysis Summary ---------------- BGP routing table entries examined: 22126 Prefixes after maximum aggregation (per Origin AS): 12106 Deaggregation factor: 1.83 Unique aggregates announced (without unneeded subnets): 14379 Total ASes present in the Internet Routing Table: 2738 Prefixes per ASN: 8.08 Origin-only ASes present in the Internet Routing Table: 2346 Origin ASes announcing only one prefix: 1076 Transit ASes present in the Internet Routing Table: 392 Transit-only ASes present in the Internet Routing Table: 67 Average AS path length visible in the Internet Routing Table: 3.3 Max AS path length visible: 16 Max AS path prepend of ASN (207352) 12 Prefixes from unregistered ASNs in the Routing Table: 24 Number of instances of unregistered ASNs: 24 Number of 32-bit ASNs allocated by the RIRs: 36704 Number of 32-bit ASNs visible in the Routing Table: 589 Prefixes from 32-bit ASNs in the Routing Table: 1711 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 7 Number of addresses announced to Internet: 288399128 Equivalent to 17 /8s, 48 /16s and 159 /24s Percentage of available address space announced: 7.8 Percentage of allocated address space announced: 7.8 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: 2976 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4736 Total APNIC prefixes after maximum aggregation: 2353 APNIC Deaggregation factor: 2.01 Prefixes being announced from the APNIC address blocks: 4794 Unique aggregates announced from the APNIC address blocks: 2757 APNIC Region origin ASes present in the Internet Routing Table: 569 APNIC Prefixes per ASN: 8.43 APNIC Region origin ASes announcing only one prefix: 238 APNIC Region transit ASes present in the Internet Routing Table: 63 Average APNIC Region AS path length visible: 3.8 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 211 Number of APNIC addresses announced to Internet: 47030592 Equivalent to 2 /8s, 205 /16s and 161 /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: 11503 Total ARIN prefixes after maximum aggregation: 6218 ARIN Deaggregation factor: 1.85 Prefixes being announced from the ARIN address blocks: 11379 Unique aggregates announced from the ARIN address blocks: 7633 ARIN Region origin ASes present in the Internet Routing Table: 1197 ARIN Prefixes per ASN: 9.51 ARIN Region origin ASes announcing only one prefix: 425 ARIN Region transit ASes present in the Internet Routing Table: 161 Average ARIN Region AS path length visible: 3.0 Max ARIN Region AS path length visible: 13 Number of ARIN region 32-bit ASNs visible in the Routing Table: 147 Number of ARIN addresses announced to Internet: 174018328 Equivalent to 10 /8s, 95 /16s and 79 /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: 3400 Total RIPE prefixes after maximum aggregation: 2738 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3475 Unique aggregates announced from the RIPE address blocks: 2854 RIPE Region origin ASes present in the Internet Routing Table: 674 RIPE Prefixes per ASN: 5.16 RIPE Region origin ASes announcing only one prefix: 322 RIPE Region transit ASes present in the Internet Routing Table: 107 Average RIPE Region AS path length visible: 3.6 Max RIPE Region AS path length visible: 16 Number of RIPE region 32-bit ASNs visible in the Routing Table: 131 Number of RIPE addresses announced to Internet: 59783040 Equivalent to 3 /8s, 144 /16s and 55 /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: 1579 Total LACNIC prefixes after maximum aggregation: 593 LACNIC Deaggregation factor: 2.66 Prefixes being announced from the LACNIC address blocks: 1584 Unique aggregates announced from the LACNIC address blocks: 825 LACNIC Region origin ASes present in the Internet Routing Table: 177 LACNIC Prefixes per ASN: 8.95 LACNIC Region origin ASes announcing only one prefix: 69 LACNIC Region transit ASes present in the Internet Routing Table: 28 Average LACNIC Region AS path length visible: 4.2 Max LACNIC Region AS path length visible: 11 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 74 Number of LACNIC addresses announced to Internet: 4776000 Equivalent to 0 /8s, 72 /16s and 224 /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: 884 Total AfriNIC prefixes after maximum aggregation: 186 AfriNIC Deaggregation factor: 4.75 Prefixes being announced from the AfriNIC address blocks: 887 Unique aggregates announced from the AfriNIC address blocks: 303 AfriNIC Region origin ASes present in the Internet Routing Table: 48 AfriNIC Prefixes per ASN: 18.48 AfriNIC Region origin ASes announcing only one prefix: 22 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 3.1 Max AfriNIC Region AS path length visible: 12 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 26 Number of AfriNIC addresses announced to Internet: 2785536 Equivalent to 0 /8s, 42 /16s and 129 /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 619 2155 456 UNALLOCATED 7497 436 214 25 UNALLOCATED 1237 192 75 137 UNALLOCATED 7575 179 330 125 UNALLOCATED 58647 176 18 2 UNALLOCATED 55824 129 19 23 UNALLOCATED 4538 124 4192 72 UNALLOCATED 4621 81 37 10 UNALLOCATED 4762 65 4 1 UNALLOCATED 23570 59 5 11 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 2434 4439 917 UNALLOCATED 14618 498 3967 370 UNALLOCATED 7896 246 51 7 UNALLOCATED 376 234 180 158 UNALLOCATED 668 209 702 180 UNALLOCATED 8075 205 11189 184 UNALLOCATED 5786 201 16 1 UNALLOCATED 2152 155 507 87 UNALLOCATED 18558 137 18 4 UNALLOCATED 1 120 1 41 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/Internet2/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 172 24 4 UNALLOCATED 559 116 550 107 UNALLOCATED 1103 98 1520 85 UNALLOCATED 137 82 677 77 UNALLOCATED 553 72 449 72 UNALLOCATED 2200 66 647 61 UNALLOCATED 2614 62 32 59 UNALLOCATED 1930 57 81 52 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 202 207 41 UNALLOCATED 28391 152 10 66 UNALLOCATED 11340 94 24 54 UNALLOCATED 27884 93 6 2 UNALLOCATED 1251 65 37 20 UNALLOCATED 2715 60 102 40 UNALLOCATED 61468 45 3 15 UNALLOCATED 4270 44 16 1 UNALLOCATED 19611 44 17 2 UNALLOCATED 28614 38 2 2 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 329 319 74 UNALLOCATED 327687 134 28 3 UNALLOCATED 36914 95 82 3 UNALLOCATED 2561 75 5 33 UNALLOCATED 8094 55 48 4 UNALLOCATED 327700 37 16 1 UNALLOCATED 37215 30 8 1 UNALLOCATED 6879 24 2 9 UNALLOCATED 37074 11 8 2 UNALLOCATED 37182 11 8 1 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 2434 4439 917 UNALLOCATED 2907 619 2155 456 UNALLOCATED 14618 498 3967 370 UNALLOCATED 7497 436 214 25 UNALLOCATED 2018 329 319 74 UNALLOCATED 680 273 1996 235 UNALLOCATED 7896 246 51 7 UNALLOCATED 376 234 180 158 UNALLOCATED 668 209 702 180 UNALLOCATED 8075 205 11189 184 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 436 411 UNALLOCATED 2018 329 255 UNALLOCATED 7896 246 239 UNALLOCATED 5786 201 200 UNALLOCATED 58647 176 174 UNALLOCATED 8895 172 168 UNALLOCATED 2907 619 163 UNALLOCATED 1916 202 161 UNALLOCATED 18558 137 133 UNALLOCATED 327687 134 131 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/Internet2/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 19658 UNALLOCATED 65.205.131.0/24 11096 UNALLOCATED 36843 UNALLOCATED 108.59.20.0/24 11096 UNALLOCATED 36843 UNALLOCATED 108.59.23.0/24 11096 UNALLOCATED 36843 UNALLOCATED 131.91.183.0/24 11096 UNALLOCATED 36843 UNALLOCATED 131.91.252.0/22 11096 UNALLOCATED 14822 UNALLOCATED 140.163.0.0/16 10466 UNALLOCATED 14822 UNALLOCATED 140.163.0.0/17 10466 UNALLOCATED 14822 UNALLOCATED 140.163.6.0/24 10466 UNALLOCATED 14822 UNALLOCATED 140.163.64.0/24 10466 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/Internet2/data-badAS Prefixes from private and non-routed address space (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 1103 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/Internet2/data-dsua Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 164.160.240.0/20 Origin: 328439 UNALLOCATED Transit: 327992 UNALLOCATED 192.31.196.0/24 Origin: 112 UNALLOCATED Transit: 1103 UNALLOCATED 192.88.99.0/24 Origin: 1103 UNALLOCATED Transit: 11537 UNALLOCATED 192.107.242.0/24 Origin: 394784 UNALLOCATED Transit: 40831 UNALLOCATED 198.135.168.0/24 Origin: 14618 UNALLOCATED Transit: 16509 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/Internet2/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 /10:4 /11:7 /12:29 /13:34 /14:81 /15:195 /16:2134 /17:449 /18:457 /19:620 /20:962 /21:1005 /22:1567 /23:1675 /24:12569 /25:82 /26:65 /27:118 /28:1 /29:49 /30:0 /31:22 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 16509 668 2434 UNALLOCATED 8895 167 172 UNALLOCATED 14618 158 498 UNALLOCATED 27884 90 93 UNALLOCATED 36914 82 95 UNALLOCATED 23024 53 56 UNALLOCATED 1 35 120 UNALLOCATED 28614 32 38 UNALLOCATED 25977 31 45 UNALLOCATED 327700 31 37 UNALLOCATED Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:5 3:78 4:2 5:15 6:4 8:2 12:1 13:215 14:84 15:18 18:41 23:26 24:6 31:6 37:6 38:9 40:3 41:137 42:26 44:5 45:75 46:10 47:1 49:10 50:5 52:608 54:116 58:2 59:20 60:4 61:4 62:7 63:34 64:126 65:7 66:50 67:57 68:18 69:42 70:9 71:17 72:16 74:39 75:128 76:165 77:8 78:3 79:10 80:14 81:32 82:5 83:7 84:5 85:36 86:9 87:1 88:1 89:11 91:54 92:1 93:12 94:4 95:5 96:6 97:1 98:8 99:178 101:2 102:9 103:311 104:41 106:1 107:8 108:19 109:8 110:3 111:21 112:4 113:1 114:23 115:1 116:4 117:61 118:35 119:19 121:29 122:11 123:8 124:42 125:13 128:81 129:178 130:123 131:110 132:60 133:137 134:93 135:1 136:203 137:158 138:11 139:16 140:50 141:3 142:61 143:41 144:70 146:126 147:70 148:167 149:16 150:46 151:7 152:77 153:11 154:25 155:57 156:64 157:30 158:47 159:120 160:32 161:19 162:51 163:70 164:48 165:23 166:1 167:20 168:168 169:10 170:93 171:1 172:10 173:19 174:1 175:32 176:11 177:8 178:3 179:13 180:21 181:11 182:6 184:6 185:53 186:3 187:18 188:14 189:6 190:138 191:35 192:1470 193:250 194:128 195:88 196:169 197:4 198:495 199:296 200:256 201:39 202:640 203:432 204:381 205:193 206:193 207:191 208:85 209:131 210:190 211:14 212:169 213:13 214:7 216:108 217:16 218:26 219:8 220:24 222:4 223:2 End of report