IPv4 R&E Routing Table Report 22:20 GMT Fri 15 Dec, 2023 IPv4 BGP Table (R&E) as seen at ESnet. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/ESnet/ Analysis Summary ---------------- BGP routing table entries examined: 17754 Prefixes after maximum aggregation (per Origin AS): 10258 Deaggregation factor: 1.73 Unique aggregates announced (without unneeded subnets): 11272 Number of IPv4 prefixes with a valid ROA: 5483 Number of IPv4 prefixes with an invalid ROA: 29 Number of IPv4 prefixes with no ROA: 12242 Total ASes present in the Internet Routing Table: 2610 Prefixes per ASN: 6.80 Origin-only ASes present in the Internet Routing Table: 2277 Origin ASes announcing only one prefix: 1022 Transit ASes present in the Internet Routing Table: 333 Transit-only ASes present in the Internet Routing Table: 52 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.6 Max AS path length visible: 14 Max AS path prepend of ASN ( 10497) 11 Prefixes from unregistered ASNs in the Routing Table: 14 Number of instances of unregistered ASNs: 14 Number of 32-bit ASNs allocated by the RIRs: 43226 Number of 32-bit ASNs visible in the Routing Table: 608 Prefixes from 32-bit ASNs in the Routing Table: 1845 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: 174799616 Equivalent to 10 /8s, 107 /16s and 59 /24s Percentage of available address space announced: 4.7 Percentage of allocated address space announced: 4.7 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: 2170 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3411 Total APNIC prefixes after maximum aggregation: 1843 APNIC Deaggregation factor: 1.85 Prefixes being announced from the APNIC address blocks: 3412 Unique aggregates announced from the APNIC address blocks: 2025 APNIC Region origin ASes present in the Internet Routing Table: 390 APNIC Prefixes per ASN: 8.75 APNIC Region origin ASes announcing only one prefix: 175 APNIC Region transit ASes present in the Internet Routing Table: 29 Average APNIC Region AS path length visible: 3.1 Max APNIC Region AS path length visible: 11 Number of APNIC region 32-bit ASNs visible in the Routing Table: 161 Number of APNIC addresses announced to Internet: 33696000 Equivalent to 2 /8s, 2 /16s and 41 /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, 131072-153913 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: 8280 Total ARIN prefixes after maximum aggregation: 4922 ARIN Deaggregation factor: 1.68 Prefixes being announced from the ARIN address blocks: 8306 Unique aggregates announced from the ARIN address blocks: 5498 ARIN Region origin ASes present in the Internet Routing Table: 1300 ARIN Prefixes per ASN: 6.39 ARIN Region origin ASes announcing only one prefix: 471 ARIN Region transit ASes present in the Internet Routing Table: 162 Average ARIN Region AS path length visible: 3.6 Max ARIN Region AS path length visible: 14 Number of ARIN region 32-bit ASNs visible in the Routing Table: 212 Number of ARIN addresses announced to Internet: 80461056 Equivalent to 4 /8s, 203 /16s and 189 /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: 3331 Total RIPE prefixes after maximum aggregation: 2777 RIPE Deaggregation factor: 1.20 Prefixes being announced from the RIPE address blocks: 3320 Unique aggregates announced from the RIPE address blocks: 2819 RIPE Region origin ASes present in the Internet Routing Table: 659 RIPE Prefixes per ASN: 5.04 RIPE Region origin ASes announcing only one prefix: 294 RIPE Region transit ASes present in the Internet Routing Table: 95 Average RIPE Region AS path length visible: 3.7 Max RIPE Region AS path length visible: 12 Number of RIPE region 32-bit ASNs visible in the Routing Table: 143 Number of RIPE addresses announced to Internet: 54097408 Equivalent to 3 /8s, 57 /16s and 118 /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 196608-216475 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: 1384 Total LACNIC prefixes after maximum aggregation: 532 LACNIC Deaggregation factor: 2.60 Prefixes being announced from the LACNIC address blocks: 1382 Unique aggregates announced from the LACNIC address blocks: 708 LACNIC Region origin ASes present in the Internet Routing Table: 157 LACNIC Prefixes per ASN: 8.80 LACNIC Region origin ASes announcing only one prefix: 58 LACNIC Region transit ASes present in the Internet Routing Table: 25 Average LACNIC Region AS path length visible: 4.5 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 66 Number of LACNIC addresses announced to Internet: 3901184 Equivalent to 0 /8s, 59 /16s and 135 /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: 1334 Total AfriNIC prefixes after maximum aggregation: 172 AfriNIC Deaggregation factor: 7.76 Prefixes being announced from the AfriNIC address blocks: 1334 Unique aggregates announced from the AfriNIC address blocks: 222 AfriNIC Region origin ASes present in the Internet Routing Table: 49 AfriNIC Prefixes per ASN: 27.22 AfriNIC Region origin ASes announcing only one prefix: 24 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 3.4 Max AfriNIC Region AS path length visible: 8 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 26 Number of AfriNIC addresses announced to Internet: 2643968 Equivalent to 0 /8s, 40 /16s and 88 /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 592 2162 464 SINET-AS Research Organization of Infor 7497 437 180 23 CSTNET-AS-AP Computer Network Informati 1237 188 74 139 KREONET-AS-KR KISTI, KR 58647 180 18 2 KAGAWAU-AS Kagawa University, JP 7575 163 329 111 AARNET-AS-AP Australian Academic and Re 55824 127 19 17 NKN-CORE-NW NKN Core Network, IN 4538 108 2336 69 ERX-CERNET-BKB China Education and Rese 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR 2697 58 4 34 ERX-ERNET-AS Education and Research Net 9317 49 16 1 ITISNET-AS INHA UNIVERSITY, KR Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 668 204 652 173 DNIC-AS-00668, US 376 201 162 151 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 2152 146 507 95 CSUNET-NW, US 18558 141 18 4 NETBLK-RCOEK, US 81 126 473 31 NCREN, US 270 115 329 79 AS270, US 23024 109 7 22 OCDE, US 2920 102 34 7 LACOE, US 237 90 560 55 MERIT-AS-14, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 283 1899 249 DFN Verein zur Foerderung eines Deutsch 786 185 1767 182 JANET Jisc Services Limited, GB 559 114 533 104 SWITCH Peering requests: peering@switch 1103 94 1247 82 SURFNET-NL SURFnet, The Netherlands, NL 2614 94 27 74 ROEDUNET, RO 137 79 676 75 ASGARR Consortium GARR, IT 1930 78 88 73 RCCN Fundacao para a Ciencia e a Tecnol 553 76 462 76 BELWUE BelWue-Koordination, DE 2200 63 598 58 FR-RENATER Reseau National de telecommu 3267 62 69 51 RUNNET, RU Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 210 176 42 Rede Nacional de Ensino e Pesquisa, BR 28391 154 10 67 Universidad Juarez Autonoma de Tabasco, 11340 98 24 48 Red Universitaria Nacional, CL 271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 4270 48 16 1 Red de Interconexion Universitaria, AR 19611 48 17 2 Associacao Antonio Vieira - Unisinos, B 61468 43 3 14 CEDIA, EC 2715 40 67 30 Fundacao Carlos Chagas Filho de Amparo 28614 38 2 2 Fundacao Universidade Regional de Blume 1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 526 82 3 KENET-AS, KE 2018 377 319 71 TENET-1, ZA 327687 160 28 3 RENU, UG 8094 47 48 18 PUKNET, ZA 327700 43 16 1 MoRENet, MZ 3208 32 2 1 ARN, DZ 6879 24 2 9 ENSTINET-, EG 37074 14 8 2 UG-AS, GH 37215 12 8 1 MAREN, MW 37501 11 49 6 UOFS, ZA Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 2907 592 2162 464 SINET-AS Research Organization of Infor 36914 526 82 3 KENET-AS, KE 7497 437 180 23 CSTNET-AS-AP Computer Network Informati 2018 377 319 71 TENET-1, ZA 680 283 1899 249 DFN Verein zur Foerderung eines Deutsch 1916 210 176 42 Rede Nacional de Ensino e Pesquisa, BR 668 204 652 173 DNIC-AS-00668, US 376 201 162 151 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 1237 188 74 139 KREONET-AS-KR KISTI, KR Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 526 523 KENET-AS, KE 7497 437 414 CSTNET-AS-AP Computer Network Information Cente 2018 377 306 TENET-1, ZA 5786 197 196 UPRENET, PR 58647 180 178 KAGAWAU-AS Kagawa University, JP 1916 210 168 Rede Nacional de Ensino e Pesquisa, BR 327687 160 157 RENU, UG 18558 141 137 NETBLK-RCOEK, US 55824 127 110 NKN-CORE-NW NKN Core Network, IN 81 126 95 NCREN, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 11570 UNALLOCATED 63.225.1.0/24 40498 ABQG, US 394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US 11570 UNALLOCATED 192.94.216.0/24 40498 ABQG, US 11570 UNALLOCATED 192.207.226.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.106.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.107.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.108.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.188.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.189.0/24 40498 ABQG, US 11570 UNALLOCATED 198.59.190.0/24 40498 ABQG, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:0 /9:0 /10:0 /11:0 /12:0 /13:0 /14:35 /15:120 /16:2005 /17:427 /18:439 /19:577 /20:825 /21:828 /22:1351 /23:1474 /24:9673 /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 36914 511 526 KENET-AS, KE 23024 52 109 OCDE, US 32440 38 62 LONI, US 327700 37 43 MoRENet, MZ 18632 33 65 VOLCANO-VISION, US 200521 33 56 SEAP-AGE, ES 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 25977 30 44 HCCS, US 27609 29 45 USC-UNIVERSITY-HOSPITAL, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:1 5:15 6:4 8:5 12:2 14:89 18:44 23:8 24:3 31:7 35:6 38:10 40:1 41:227 42:6 44:6 45:36 46:5 47:1 49:7 50:8 52:1 58:1 59:1 60:5 61:1 62:9 63:37 64:51 65:19 66:54 67:45 68:20 69:17 70:2 71:1 72:7 74:53 76:42 77:9 78:3 79:10 80:12 81:25 82:7 83:7 84:8 85:27 86:1 87:1 89:10 91:38 92:2 93:4 94:4 95:2 97:3 98:2 101:2 102:33 103:192 104:74 107:16 108:8 109:2 114:13 117:61 119:18 121:11 124:40 125:2 128:55 129:47 130:86 131:65 132:55 133:155 134:109 136:196 137:125 138:6 139:5 140:42 141:3 142:35 143:23 144:28 145:2 146:125 147:60 148:194 149:11 150:37 151:14 152:131 153:13 154:30 155:59 156:66 157:18 158:32 159:115 160:34 161:15 162:30 163:70 164:13 165:47 166:2 167:13 168:112 169:8 170:102 171:1 172:3 173:7 174:1 177:6 179:11 180:15 181:1 182:1 184:2 185:48 186:3 187:18 188:13 189:3 190:18 191:12 192:1461 193:293 194:117 195:78 196:199 197:326 198:510 199:287 200:318 201:36 202:322 203:257 204:371 205:131 206:200 207:163 208:76 209:122 210:175 211:2 212:41 213:5 214:8 216:93 217:9 218:2 219:4 220:7 222:1 223:4 End of report