IPv4 R&E Routing Table Report 22:20 GMT Tue 11 Jul, 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: 20093 Prefixes after maximum aggregation (per Origin AS): 11537 Deaggregation factor: 1.74 Unique aggregates announced (without unneeded subnets): 12905 Number of IPv4 prefixes with a valid ROA: 5359 Number of IPv4 prefixes with an invalid ROA: 48 Number of IPv4 prefixes with no ROA: 14686 Total ASes present in the Internet Routing Table: 2941 Prefixes per ASN: 6.83 Origin-only ASes present in the Internet Routing Table: 2533 Origin ASes announcing only one prefix: 1126 Transit ASes present in the Internet Routing Table: 408 Transit-only ASes present in the Internet Routing Table: 81 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.8 Max AS path length visible: 19 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 12 Number of instances of unregistered ASNs: 12 Number of 32-bit ASNs allocated by the RIRs: 42276 Number of 32-bit ASNs visible in the Routing Table: 662 Prefixes from 32-bit ASNs in the Routing Table: 2023 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: 3 Number of addresses announced to Internet: 178886144 Equivalent to 10 /8s, 169 /16s and 150 /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: 2599 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4450 Total APNIC prefixes after maximum aggregation: 2173 APNIC Deaggregation factor: 2.05 Prefixes being announced from the APNIC address blocks: 4435 Unique aggregates announced from the APNIC address blocks: 2508 APNIC Region origin ASes present in the Internet Routing Table: 510 APNIC Prefixes per ASN: 8.70 APNIC Region origin ASes announcing only one prefix: 214 APNIC Region transit ASes present in the Internet Routing Table: 56 Average APNIC Region AS path length visible: 3.9 Max APNIC Region AS path length visible: 12 Number of APNIC region 32-bit ASNs visible in the Routing Table: 186 Number of APNIC addresses announced to Internet: 35698176 Equivalent to 2 /8s, 32 /16s and 182 /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: 9699 Total ARIN prefixes after maximum aggregation: 5876 ARIN Deaggregation factor: 1.65 Prefixes being announced from the ARIN address blocks: 9668 Unique aggregates announced from the ARIN address blocks: 6544 ARIN Region origin ASes present in the Internet Routing Table: 1489 ARIN Prefixes per ASN: 6.49 ARIN Region origin ASes announcing only one prefix: 544 ARIN Region transit ASes present in the Internet Routing Table: 200 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 19 Number of ARIN region 32-bit ASNs visible in the Routing Table: 249 Number of ARIN addresses announced to Internet: 82324480 Equivalent to 4 /8s, 232 /16s and 44 /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: 3436 Total RIPE prefixes after maximum aggregation: 2758 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3495 Unique aggregates announced from the RIPE address blocks: 2882 RIPE Region origin ASes present in the Internet Routing Table: 652 RIPE Prefixes per ASN: 5.36 RIPE Region origin ASes announcing only one prefix: 286 RIPE Region transit ASes present in the Internet Routing Table: 102 Average RIPE Region AS path length visible: 3.6 Max RIPE Region AS path length visible: 12 Number of RIPE region 32-bit ASNs visible in the Routing Table: 135 Number of RIPE addresses announced to Internet: 54262016 Equivalent to 3 /8s, 59 /16s and 249 /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: 1425 Total LACNIC prefixes after maximum aggregation: 555 LACNIC Deaggregation factor: 2.57 Prefixes being announced from the LACNIC address blocks: 1422 Unique aggregates announced from the LACNIC address blocks: 751 LACNIC Region origin ASes present in the Internet Routing Table: 158 LACNIC Prefixes per ASN: 9.00 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: 4.4 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: 4054784 Equivalent to 0 /8s, 61 /16s and 223 /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: 1071 Total AfriNIC prefixes after maximum aggregation: 165 AfriNIC Deaggregation factor: 6.49 Prefixes being announced from the AfriNIC address blocks: 1070 Unique aggregates announced from the AfriNIC address blocks: 217 AfriNIC Region origin ASes present in the Internet Routing Table: 47 AfriNIC Prefixes per ASN: 22.77 AfriNIC Region origin ASes announcing only one prefix: 25 AfriNIC Region transit ASes present in the Internet Routing Table: 8 Average AfriNIC Region AS path length visible: 3.5 Max AfriNIC Region AS path length visible: 14 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 26 Number of AfriNIC addresses announced to Internet: 2541824 Equivalent to 0 /8s, 38 /16s and 201 /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 584 2143 456 SINET-AS Research Organization of Infor 7497 434 180 23 CSTNET-AS-AP Computer Network Informati 1237 186 74 137 KREONET-AS-KR KISTI, KR 58647 178 18 2 KAGAWAU-AS Kagawa University, JP 7575 176 329 120 AARNET-AS-AP Australian Academic and Re 55824 117 18 10 NKN-CORE-NW NKN Core Network, IN 4538 112 2368 69 ERX-CERNET-BKB China Education and Rese 4621 69 37 10 UNINET-AS-AP UNINET-, TH 9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T 4762 65 4 1 MAHIDOL-BORDER-AS Mahidol 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 668 212 616 176 DNIC-AS-00668, US 376 202 178 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 18530 161 27 128 ISOMEDIA-1, US 2152 139 507 94 CSUNET-NW, US 11404 134 178 106 AS-WAVE-1, US 18558 134 18 4 NETBLK-RCOEK, US 81 127 473 32 NCREN, US 270 115 329 84 AS270, US 23024 113 7 17 OCDE, 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 1919 249 DFN Verein zur Foerderung eines Deutsch 786 186 1767 183 JANET Jisc Services Limited, GB 8895 135 24 4 ISU Internet Services Unit ISU, SA 559 112 533 104 SWITCH Peering requests: peering@switch 2614 94 27 74 ROEDUNET, RO 1103 93 1246 82 SURFNET-NL SURFnet, The Netherlands, NL 137 82 677 77 ASGARR Consortium GARR, IT 553 74 465 74 BELWUE BelWue-Koordination, DE 1930 65 81 60 RCCN Fundacao para a Ciencia e a Tecnol 2200 64 599 59 FR-RENATER Reseau National de telecommu 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 219 192 42 Rede Nacional de Ensino e Pesquisa, BR 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 103 24 47 Red Universitaria Nacional, CL 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 1251 56 36 15 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 4270 48 16 1 Red de Interconexion Universitaria, AR 61468 42 3 14 CEDIA, EC 28571 39 39 17 UNIVERSIDADE DE SAO PAULO, BR 28614 38 2 2 Fundacao Universidade Regional de Blume 19611 37 17 2 Associacao Antonio Vieira - Unisinos, B 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 2018 367 319 71 TENET-1, ZA 36914 256 82 3 KENET-AS, KE 327687 166 28 3 RENU, UG 8094 48 48 15 PUKNET, ZA 327700 40 16 1 MoRENet, MZ 37215 37 8 1 MAREN, MW 3208 32 2 1 ARN, DZ 6879 24 2 9 ENSTINET-, EG 37074 13 8 2 UG-AS, GH 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 584 2143 456 SINET-AS Research Organization of Infor 7497 434 180 23 CSTNET-AS-AP Computer Network Informati 2018 367 319 71 TENET-1, ZA 680 283 1919 249 DFN Verein zur Foerderung eines Deutsch 36914 256 82 3 KENET-AS, KE 1916 219 192 42 Rede Nacional de Ensino e Pesquisa, BR 668 212 616 176 DNIC-AS-00668, US 376 202 178 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 786 186 1767 183 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 7497 434 411 CSTNET-AS-AP Computer Network Information Cente 2018 367 296 TENET-1, ZA 36914 256 253 KENET-AS, KE 5786 198 197 UPRENET, PR 1916 219 177 Rede Nacional de Ensino e Pesquisa, BR 58647 178 176 KAGAWAU-AS Kagawa University, JP 327687 166 163 RENU, UG 8895 135 131 ISU Internet Services Unit ISU, SA 18558 134 130 NETBLK-RCOEK, US 55824 117 107 NKN-CORE-NW NKN Core Network, IN 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 29867 UNALLOCATED 64.202.80.0/20 22742 CT-EDU-NET, US 394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US 33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US 29867 UNALLOCATED 192.160.243.0/24 22742 CT-EDU-NET, US 29867 UNALLOCATED 192.160.244.0/24 22742 CT-EDU-NET, US 19176 UNALLOCATED 206.174.131.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 206.174.140.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 206.174.141.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 206.174.142.0/24 32278 GETWIRELESS, US 19176 UNALLOCATED 206.174.144.0/24 32278 GETWIRELESS, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 64.202.80.0/20 Origin: 29867 UNASSIGNED 64.202.80.0/20 Transit: 22742 CT-EDU-NET, US 102.36.194.0/23 Origin: 2018 TENET-1, ZA 102.36.194.0/23 Transit: 293 ESNET, US 202.58.231.0/24 Origin: 134096 EHEALTHNSW-AS-AP eHealth NSW, AU 202.58.231.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res Complete listing at https://bgp.nsrc.org/REN/ESnet/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 /9:0 /10:0 /11:0 /12:0 /13:0 /14:35 /15:122 /16:2026 /17:442 /18:452 /19:609 /20:925 /21:964 /22:1664 /23:1744 /24:11110 /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 244 256 KENET-AS, KE 8895 130 135 ISU Internet Services Unit ISU, SA 30041 57 68 RACE, US 18530 55 161 ISOMEDIA-1, US 23024 52 113 OCDE, US 19194 43 45 JOVITA, US 18632 34 66 VOLCANO-VISION, US 32440 34 49 LONI, US 327700 34 40 MoRENet, MZ 200521 33 56 SEAP-AGE, ES 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 8:6 12:1 14:89 18:42 23:43 24:7 31:8 35:4 37:3 38:26 40:1 41:145 42:10 44:7 45:43 46:6 47:1 49:9 50:9 52:3 58:1 59:19 60:4 61:3 62:7 63:89 64:104 65:22 66:64 67:57 68:18 69:48 70:3 71:1 72:31 74:60 76:48 77:9 78:3 79:10 80:9 81:26 82:5 83:6 84:5 85:41 86:7 87:6 89:10 91:43 92:1 93:6 94:6 95:2 97:3 98:4 101:2 102:30 103:216 104:109 107:30 108:10 109:6 111:16 114:23 116:6 117:61 118:32 119:18 121:26 122:8 123:8 124:38 125:4 128:87 129:45 130:90 131:55 132:61 133:154 134:105 136:202 137:136 138:9 139:5 140:54 141:2 142:51 143:29 144:28 145:2 146:198 147:64 148:161 149:12 150:42 151:14 152:141 153:14 154:30 155:63 156:67 157:22 158:39 159:115 160:30 161:63 162:47 163:78 164:10 165:46 166:3 167:14 168:131 169:8 170:84 172:6 173:8 174:8 175:27 177:6 179:12 180:15 181:1 182:1 184:3 185:54 186:3 187:19 188:14 189:3 190:18 191:13 192:1516 193:287 194:123 195:59 196:201 197:161 198:564 199:339 200:300 201:39 202:613 203:432 204:404 205:144 206:221 207:179 208:119 209:140 210:176 211:2 212:168 213:5 214:8 216:119 217:11 218:22 219:6 220:17 222:2 223:4 End of report