IPv4 R&E Routing Table Report 22:20 GMT Fri 06 Oct, 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: 18743 Prefixes after maximum aggregation (per Origin AS): 10739 Deaggregation factor: 1.75 Unique aggregates announced (without unneeded subnets): 11871 Number of IPv4 prefixes with a valid ROA: 5221 Number of IPv4 prefixes with an invalid ROA: 34 Number of IPv4 prefixes with no ROA: 13488 Total ASes present in the Internet Routing Table: 2743 Prefixes per ASN: 6.83 Origin-only ASes present in the Internet Routing Table: 2377 Origin ASes announcing only one prefix: 1047 Transit ASes present in the Internet Routing Table: 366 Transit-only ASes present in the Internet Routing Table: 64 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 ( 10497) 11 Prefixes from unregistered ASNs in the Routing Table: 2 Number of instances of unregistered ASNs: 2 Number of 32-bit ASNs allocated by the RIRs: 42776 Number of 32-bit ASNs visible in the Routing Table: 629 Prefixes from 32-bit ASNs in the Routing Table: 1921 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: 2 Number of addresses announced to Internet: 176266240 Equivalent to 10 /8s, 129 /16s and 156 /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: 2052 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4515 Total APNIC prefixes after maximum aggregation: 2223 APNIC Deaggregation factor: 2.03 Prefixes being announced from the APNIC address blocks: 4523 Unique aggregates announced from the APNIC address blocks: 2578 APNIC Region origin ASes present in the Internet Routing Table: 522 APNIC Prefixes per ASN: 8.66 APNIC Region origin ASes announcing only one prefix: 219 APNIC Region transit ASes present in the Internet Routing Table: 55 Average APNIC Region AS path length visible: 3.9 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 200 Number of APNIC addresses announced to Internet: 35719424 Equivalent to 2 /8s, 33 /16s and 9 /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: 8258 Total ARIN prefixes after maximum aggregation: 4990 ARIN Deaggregation factor: 1.65 Prefixes being announced from the ARIN address blocks: 8251 Unique aggregates announced from the ARIN address blocks: 5496 ARIN Region origin ASes present in the Internet Routing Table: 1282 ARIN Prefixes per ASN: 6.44 ARIN Region origin ASes announcing only one prefix: 455 ARIN Region transit ASes present in the Internet Routing Table: 163 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: 204 Number of ARIN addresses announced to Internet: 79479552 Equivalent to 4 /8s, 188 /16s and 195 /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: 3507 Total RIPE prefixes after maximum aggregation: 2820 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3509 Unique aggregates announced from the RIPE address blocks: 2867 RIPE Region origin ASes present in the Internet Routing Table: 673 RIPE Prefixes per ASN: 5.21 RIPE Region origin ASes announcing only one prefix: 296 RIPE Region transit ASes present in the Internet Routing Table: 98 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: 140 Number of RIPE addresses announced to Internet: 54375168 Equivalent to 3 /8s, 61 /16s and 179 /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: 1420 Total LACNIC prefixes after maximum aggregation: 547 LACNIC Deaggregation factor: 2.60 Prefixes being announced from the LACNIC address blocks: 1417 Unique aggregates announced from the LACNIC address blocks: 736 LACNIC Region origin ASes present in the Internet Routing Table: 156 LACNIC Prefixes per ASN: 9.08 LACNIC Region origin ASes announcing only one prefix: 54 LACNIC Region transit ASes present in the Internet Routing Table: 25 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: 61 Number of LACNIC addresses announced to Internet: 4049920 Equivalent to 0 /8s, 61 /16s and 204 /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: 1041 Total AfriNIC prefixes after maximum aggregation: 157 AfriNIC Deaggregation factor: 6.63 Prefixes being announced from the AfriNIC address blocks: 1041 Unique aggregates announced from the AfriNIC address blocks: 192 AfriNIC Region origin ASes present in the Internet Routing Table: 45 AfriNIC Prefixes per ASN: 23.13 AfriNIC Region origin ASes announcing only one prefix: 23 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 3.3 Max AfriNIC Region AS path length visible: 9 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 24 Number of AfriNIC addresses announced to Internet: 2576384 Equivalent to 0 /8s, 39 /16s and 80 /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 593 2162 465 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 7575 177 329 120 AARNET-AS-AP Australian Academic and Re 58647 177 18 2 KAGAWAU-AS Kagawa University, JP 55824 126 18 17 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 63 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 668 204 652 173 DNIC-AS-00668, US 376 202 178 151 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 2152 144 507 93 CSUNET-NW, US 18558 141 18 4 NETBLK-RCOEK, US 81 126 473 31 NCREN, US 270 115 329 84 AS270, US 23024 113 7 17 OCDE, US 2920 101 34 7 LACOE, US 21976 82 51 18 NJEDGE-NET, 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 1903 249 DFN Verein zur Foerderung eines Deutsch 786 185 1767 182 JANET Jisc Services Limited, GB 8895 136 24 4 ISU Internet Services Unit ISU, SA 559 113 533 105 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 75 469 75 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 213 176 42 Rede Nacional de Ensino e Pesquisa, BR 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 104 24 48 Red Universitaria Nacional, CL 271640 72 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 4270 48 16 1 Red de Interconexion Universitaria, AR 19611 48 17 2 Associacao Antonio Vieira - Unisinos, B 61468 43 3 14 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 3596 34 4 3 Universidad Autonoma Metropolitana, MX 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 381 319 71 TENET-1, ZA 36914 254 82 3 KENET-AS, KE 327687 168 28 3 RENU, UG 8094 48 48 15 PUKNET, ZA 327700 44 16 1 MoRENet, MZ 3208 32 2 1 ARN, DZ 37074 14 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA 37654 10 1 6 RwEdNet-AS, RW 36982 8 33 8 UCT, 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 593 2162 465 SINET-AS Research Organization of Infor 7497 437 180 23 CSTNET-AS-AP Computer Network Informati 2018 381 319 71 TENET-1, ZA 680 283 1903 249 DFN Verein zur Foerderung eines Deutsch 36914 254 82 3 KENET-AS, KE 1916 213 176 42 Rede Nacional de Ensino e Pesquisa, BR 668 204 652 173 DNIC-AS-00668, US 376 202 178 151 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 7497 437 414 CSTNET-AS-AP Computer Network Information Cente 2018 381 310 TENET-1, ZA 36914 254 251 KENET-AS, KE 5786 197 196 UPRENET, PR 58647 177 175 KAGAWAU-AS Kagawa University, JP 1916 213 171 Rede Nacional de Ensino e Pesquisa, BR 327687 168 165 RENU, UG 18558 141 137 NETBLK-RCOEK, US 8895 136 132 ISU Internet Services Unit ISU, SA 55824 126 109 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 394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US 394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 134.208.0.0/16 Origin: 17711 NDHU-TW National Dong Hwa University, TW 134.208.0.0/16 Transit: 7539 TWAREN-TW National Center for High-perfo 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 /16:2017 /17:404 /18:414 /19:574 /20:874 /21:858 /22:1494 /23:1563 /24:10388 /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 243 254 KENET-AS, KE 8895 131 136 ISU Internet Services Unit ISU, SA 23024 52 113 OCDE, US 327700 39 44 MoRENet, MZ 32440 38 61 LONI, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 200521 31 53 SEAP-AGE, ES 27609 29 45 USC-UNIVERSITY-HOSPITAL, US 40326 29 33 ECKERD-COLLEGE, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 5:18 6:4 8:5 12:1 14:89 18:43 23:12 24:3 31:7 35:4 38:10 40:1 41:122 42:10 44:6 45:45 46:5 47:1 49:9 50:9 52:1 59:19 60:5 61:3 62:10 63:37 64:55 65:13 66:56 67:16 68:19 69:18 70:2 71:1 72:8 74:49 76:42 77:9 78:3 79:10 80:12 81:27 82:6 83:6 84:8 85:41 86:1 87:1 89:10 91:42 92:2 93:4 94:4 95:2 96:5 97:3 98:2 101:2 102:29 103:258 104:77 108:10 109:6 111:16 114:23 116:6 117:61 118:32 119:18 121:27 122:8 123:8 124:40 125:4 128:87 129:49 130:94 131:64 132:60 133:152 134:109 136:196 137:131 138:9 139:5 140:42 141:1 142:39 143:19 144:28 145:3 146:131 147:63 148:193 149:12 150:44 151:19 152:146 153:14 154:30 155:63 156:65 157:18 158:36 159:116 160:33 161:20 162:33 163:72 164:10 165:47 166:3 167:10 168:124 169:8 170:89 171:1 172:5 173:7 174:1 175:18 177:5 179:8 180:15 182:1 184:4 185:48 186:3 187:19 188:13 189:3 190:19 191:13 192:1485 193:291 194:126 195:53 196:203 197:167 198:510 199:283 200:330 201:39 202:620 203:426 204:368 205:130 206:200 207:176 208:76 209:123 210:182 211:13 212:163 213:5 214:8 216:99 217:9 218:22 219:5 220:16 222:2 223:4 End of report