IPv4 R&E Routing Table Report 22:20 GMT Thu 22 Feb, 2024 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: 18755 Prefixes after maximum aggregation (per Origin AS): 10614 Deaggregation factor: 1.77 Unique aggregates announced (without unneeded subnets): 11741 Number of IPv4 prefixes with a valid ROA: 5930 Number of IPv4 prefixes with an invalid ROA: 45 Number of IPv4 prefixes with no ROA: 12780 Total ASes present in the Internet Routing Table: 2731 Prefixes per ASN: 6.87 Origin-only ASes present in the Internet Routing Table: 2377 Origin ASes announcing only one prefix: 1064 Transit ASes present in the Internet Routing Table: 354 Transit-only ASes present in the Internet Routing Table: 60 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.7 Max AS path length visible: 14 Max AS path prepend of ASN ( 47805) 11 Prefixes from unregistered ASNs in the Routing Table: 18 Number of instances of unregistered ASNs: 18 Number of 32-bit ASNs allocated by the RIRs: 43676 Number of 32-bit ASNs visible in the Routing Table: 639 Prefixes from 32-bit ASNs in the Routing Table: 1947 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: 176319744 Equivalent to 10 /8s, 130 /16s and 109 /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: 99.6 Total number of prefixes smaller than registry allocations: 2281 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4256 Total APNIC prefixes after maximum aggregation: 2153 APNIC Deaggregation factor: 1.98 Prefixes being announced from the APNIC address blocks: 4257 Unique aggregates announced from the APNIC address blocks: 2428 APNIC Region origin ASes present in the Internet Routing Table: 493 APNIC Prefixes per ASN: 8.63 APNIC Region origin ASes announcing only one prefix: 217 APNIC Region transit ASes present in the Internet Routing Table: 43 Average APNIC Region AS path length visible: 3.7 Max APNIC Region AS path length visible: 11 Number of APNIC region 32-bit ASNs visible in the Routing Table: 185 Number of APNIC addresses announced to Internet: 35460352 Equivalent to 2 /8s, 29 /16s and 21 /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: 8412 Total ARIN prefixes after maximum aggregation: 4948 ARIN Deaggregation factor: 1.70 Prefixes being announced from the ARIN address blocks: 8435 Unique aggregates announced from the ARIN address blocks: 5519 ARIN Region origin ASes present in the Internet Routing Table: 1306 ARIN Prefixes per ASN: 6.46 ARIN Region origin ASes announcing only one prefix: 466 ARIN Region transit ASes present in the Internet Routing Table: 166 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: 214 Number of ARIN addresses announced to Internet: 80278016 Equivalent to 4 /8s, 200 /16s and 242 /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: 3469 Total RIPE prefixes after maximum aggregation: 2790 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3464 Unique aggregates announced from the RIPE address blocks: 2850 RIPE Region origin ASes present in the Internet Routing Table: 662 RIPE Prefixes per ASN: 5.23 RIPE Region origin ASes announcing only one prefix: 298 RIPE Region transit ASes present in the Internet Routing Table: 97 Average RIPE Region AS path length visible: 3.6 Max RIPE Region AS path length visible: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 145 Number of RIPE addresses announced to Internet: 53864960 Equivalent to 3 /8s, 53 /16s and 234 /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: 1335 Total LACNIC prefixes after maximum aggregation: 534 LACNIC Deaggregation factor: 2.50 Prefixes being announced from the LACNIC address blocks: 1334 Unique aggregates announced from the LACNIC address blocks: 720 LACNIC Region origin ASes present in the Internet Routing Table: 157 LACNIC Prefixes per ASN: 8.50 LACNIC Region origin ASes announcing only one prefix: 57 LACNIC Region transit ASes present in the Internet Routing Table: 24 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: 67 Number of LACNIC addresses announced to Internet: 4096000 Equivalent to 0 /8s, 62 /16s and 128 /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: 1265 Total AfriNIC prefixes after maximum aggregation: 174 AfriNIC Deaggregation factor: 7.27 Prefixes being announced from the AfriNIC address blocks: 1265 Unique aggregates announced from the AfriNIC address blocks: 224 AfriNIC Region origin ASes present in the Internet Routing Table: 49 AfriNIC Prefixes per ASN: 25.82 AfriNIC Region origin ASes announcing only one prefix: 26 AfriNIC Region transit ASes present in the Internet Routing Table: 8 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: 28 Number of AfriNIC addresses announced to Internet: 2620416 Equivalent to 0 /8s, 39 /16s and 252 /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 590 2162 464 SINET-AS Research Organization of Infor 7497 441 180 23 CSTNET-AS-AP Computer Network Informati 1237 189 74 139 KREONET-AS-KR KISTI, KR 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 174 329 117 AARNET-AS-AP Australian Academic and Re 55824 130 19 19 NKN-CORE-NW NKN Core Network, IN 4538 111 2384 69 ERX-CERNET-BKB China Education and Rese 4762 71 4 1 MAHIDOL-BORDER-AS Mahidol University, T 4621 70 37 10 UNINET-AS-AP UNINET-, TH 9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T 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 668 203 648 172 DNIC-AS-00668, US 376 201 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2152 146 507 95 CSUNET-NW, US 18558 141 18 4 NETBLK-RCOEK, US 81 125 473 31 NCREN, US 270 114 328 78 AS270, US 23024 106 7 27 OCDE, US 2920 102 34 7 LACOE, US 237 89 544 54 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 786 183 1751 180 JANET Jisc Services Limited, GB 8895 133 24 4 ISU Internet Services Unit ISU, SA 559 114 533 104 SWITCH Peering requests: peering@switch 1103 94 1247 82 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 27 73 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnol 553 78 462 78 BELWUE BelWue-Koordination, DE 3267 77 44 68 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 28391 154 10 67 Universidad Juarez Autonoma de Tabasco, 1916 149 176 42 Rede Nacional de Ensino e Pesquisa, BR 11340 107 24 51 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 42 99 32 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 486 82 3 KENET-AS, KE 2018 378 319 71 TENET-1, ZA 327687 160 28 3 RENU, UG 8094 47 48 18 PUKNET, ZA 327700 47 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37074 13 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA 37654 11 1 6 RwEdNet-AS, RW 37215 9 8 1 MAREN, MW 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 590 2162 464 SINET-AS Research Organization of Infor 36914 486 82 3 KENET-AS, KE 7497 441 180 23 CSTNET-AS-AP Computer Network Informati 2018 378 319 71 TENET-1, ZA 680 283 1899 249 DFN Verein zur Foerderung eines Deutsch 668 203 648 172 DNIC-AS-00668, US 376 201 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 1237 189 74 139 KREONET-AS-KR KISTI, KR 786 183 1751 180 JANET Jisc Services Limited, GB 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 486 483 KENET-AS, KE 7497 441 418 CSTNET-AS-AP Computer Network Information Cente 2018 378 307 TENET-1, ZA 5786 198 197 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 327687 160 157 RENU, UG 18558 141 137 NETBLK-RCOEK, US 8895 133 129 ISU Internet Services Unit ISU, SA 55824 130 111 NKN-CORE-NW NKN Core Network, IN 1916 149 107 Rede Nacional de Ensino e Pesquisa, BR 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 26303 UNALLOCATED 76.165.220.0/24 32440 LONI, US 26303 UNALLOCATED 76.165.221.0/24 32440 LONI, US 26303 UNALLOCATED 76.165.222.0/24 32440 LONI, 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 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 /15:121 /16:2019 /17:427 /18:447 /19:571 /20:862 /21:879 /22:1497 /23:1552 /24:10345 /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 471 486 KENET-AS, KE 8895 128 133 ISU Internet Services Unit ISU, SA 23024 52 106 OCDE, US 327700 41 47 MoRENet, MZ 32440 37 60 LONI, US 3267 35 77 RUNNET, RU 18632 34 66 VOLCANO-VISION, US 200521 33 56 SEAP-AGE, ES 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 5:15 6:4 8:5 12:2 14:90 18:44 23:7 24:3 31:1 35:7 38:10 40:1 41:178 42:10 44:6 45:38 46:5 47:1 49:7 50:7 52:1 59:3 60:6 61:3 62:8 63:37 64:44 65:19 66:58 67:44 68:20 69:17 70:2 71:1 72:7 74:53 76:41 77:11 78:3 79:10 80:12 81:25 82:5 83:7 84:7 85:31 86:1 87:1 89:11 91:44 92:2 93:5 94:2 95:2 97:3 98:2 101:2 102:40 103:210 104:74 107:16 108:8 109:4 114:24 116:6 117:61 119:19 121:11 123:8 124:42 125:5 128:85 129:44 130:86 131:65 132:59 133:156 134:110 136:197 137:136 138:57 139:5 140:42 141:3 142:34 143:23 144:28 145:2 146:134 147:59 148:195 149:12 150:40 151:14 152:130 153:13 154:29 155:63 156:67 157:18 158:35 159:115 160:34 161:17 162:30 163:72 164:13 165:49 166:2 167:13 168:118 169:7 170:107 171:1 172:3 173:7 174:1 175:17 177:7 179:11 180:15 181:1 182:1 184:3 185:47 186:3 187:17 188:14 189:3 190:17 191:13 192:1498 193:259 194:122 195:64 196:197 197:337 198:487 199:289 200:265 201:36 202:569 203:408 204:376 205:132 206:193 207:162 208:78 209:122 210:184 211:13 212:169 213:4 214:8 216:93 217:10 218:22 219:5 220:17 222:2 223:4 End of report