IPv4 R&E Routing Table Report 22:20 GMT Tue 16 May, 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: 20362 Prefixes after maximum aggregation (per Origin AS): 11795 Deaggregation factor: 1.73 Unique aggregates announced (without unneeded subnets): 13308 Number of IPv4 prefixes with a valid ROA: 5222 Number of IPv4 prefixes with an invalid ROA: 46 Number of IPv4 prefixes with no ROA: 15094 Total ASes present in the Internet Routing Table: 2939 Prefixes per ASN: 6.93 Origin-only ASes present in the Internet Routing Table: 2539 Origin ASes announcing only one prefix: 1127 Transit ASes present in the Internet Routing Table: 400 Transit-only ASes present in the Internet Routing Table: 76 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.9 Max AS path length visible: 19 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 11 Number of instances of unregistered ASNs: 11 Number of 32-bit ASNs allocated by the RIRs: 41864 Number of 32-bit ASNs visible in the Routing Table: 662 Prefixes from 32-bit ASNs in the Routing Table: 1940 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: 179055872 Equivalent to 10 /8s, 172 /16s and 45 /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: 2637 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4476 Total APNIC prefixes after maximum aggregation: 2194 APNIC Deaggregation factor: 2.04 Prefixes being announced from the APNIC address blocks: 4477 Unique aggregates announced from the APNIC address blocks: 2540 APNIC Region origin ASes present in the Internet Routing Table: 512 APNIC Prefixes per ASN: 8.74 APNIC Region origin ASes announcing only one prefix: 217 APNIC Region transit ASes present in the Internet Routing Table: 54 Average APNIC Region AS path length visible: 4.0 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 188 Number of APNIC addresses announced to Internet: 35755520 Equivalent to 2 /8s, 33 /16s and 150 /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, 131072-151865 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: 10071 Total ARIN prefixes after maximum aggregation: 6106 ARIN Deaggregation factor: 1.65 Prefixes being announced from the ARIN address blocks: 9937 Unique aggregates announced from the ARIN address blocks: 6812 ARIN Region origin ASes present in the Internet Routing Table: 1496 ARIN Prefixes per ASN: 6.64 ARIN Region origin ASes announcing only one prefix: 545 ARIN Region transit ASes present in the Internet Routing Table: 197 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: 251 Number of ARIN addresses announced to Internet: 82590720 Equivalent to 4 /8s, 236 /16s and 60 /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: 3459 Total RIPE prefixes after maximum aggregation: 2771 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3604 Unique aggregates announced from the RIPE address blocks: 2975 RIPE Region origin ASes present in the Internet Routing Table: 655 RIPE Prefixes per ASN: 5.50 RIPE Region origin ASes announcing only one prefix: 289 RIPE Region transit ASes present in the Internet Routing Table: 99 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: 136 Number of RIPE addresses announced to Internet: 54328576 Equivalent to 3 /8s, 60 /16s and 253 /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: 1401 Total LACNIC prefixes after maximum aggregation: 546 LACNIC Deaggregation factor: 2.57 Prefixes being announced from the LACNIC address blocks: 1399 Unique aggregates announced from the LACNIC address blocks: 756 LACNIC Region origin ASes present in the Internet Routing Table: 150 LACNIC Prefixes per ASN: 9.33 LACNIC Region origin ASes announcing only one prefix: 53 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 14 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 62 Number of LACNIC addresses announced to Internet: 3869440 Equivalent to 0 /8s, 59 /16s and 11 /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: 944 Total AfriNIC prefixes after maximum aggregation: 169 AfriNIC Deaggregation factor: 5.59 Prefixes being announced from the AfriNIC address blocks: 943 Unique aggregates announced from the AfriNIC address blocks: 223 AfriNIC Region origin ASes present in the Internet Routing Table: 46 AfriNIC Prefixes per ASN: 20.50 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: 3.4 Max AfriNIC Region AS path length visible: 14 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 25 Number of AfriNIC addresses announced to Internet: 2510848 Equivalent to 0 /8s, 38 /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 586 2151 457 SINET-AS Research Organization of Infor 7497 435 182 24 CSTNET-AS-AP Computer Network Informati 1237 187 74 138 KREONET-AS-KR KISTI, KR 58647 178 18 2 KAGAWAU-AS Kagawa University, JP 7575 173 329 119 AARNET-AS-AP Australian Academic and Re 55824 117 18 11 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 668 216 636 179 DNIC-AS-00668, US 376 202 178 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 16509 186 14 100 AMAZON-02, US 18530 162 27 128 ISOMEDIA-1, US 2152 137 507 94 CSUNET-NW, US 11404 133 177 105 AS-WAVE-1, US 18558 133 18 4 NETBLK-RCOEK, US 81 128 473 33 NCREN, US 270 115 305 85 AS270, 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 1775 183 JANET Jisc Services Limited, GB 8895 136 24 4 ISU Internet Services Unit ISU, SA 559 112 533 104 SWITCH Peering requests: peering@switch 1103 94 1262 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 94 27 74 ROEDUNET, RO 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 221 208 43 Rede Nacional de Ensino e Pesquisa, BR 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 89 23 48 Red Universitaria Nacional, CL 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 1251 57 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 4270 45 16 1 Red de Interconexion Universitaria, AR 61468 43 3 15 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 19611 37 17 2 Associacao Antonio Vieira - Unisinos, B 263282 37 5 12 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA 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 382 319 72 TENET-1, ZA 36914 258 82 3 KENET-AS, KE 327687 57 28 3 RENU, UG 8094 48 48 15 PUKNET, ZA 327700 35 16 1 MoRENet, MZ 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 37654 10 1 6 RwEdNet-AS, RW 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 586 2151 457 SINET-AS Research Organization of Infor 7497 435 182 24 CSTNET-AS-AP Computer Network Informati 2018 382 319 72 TENET-1, ZA 680 283 1919 249 DFN Verein zur Foerderung eines Deutsch 36914 258 82 3 KENET-AS, KE 1916 221 208 43 Rede Nacional de Ensino e Pesquisa, BR 668 216 636 179 DNIC-AS-00668, US 376 202 178 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 1237 187 74 138 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 435 411 CSTNET-AS-AP Computer Network Information Cente 2018 382 310 TENET-1, ZA 36914 258 255 KENET-AS, KE 5786 198 197 UPRENET, PR 1916 221 178 Rede Nacional de Ensino e Pesquisa, BR 58647 178 176 KAGAWAU-AS Kagawa University, JP 8895 136 132 ISU Internet Services Unit ISU, SA 18558 133 129 NETBLK-RCOEK, US 55824 117 106 NKN-CORE-NW NKN Core Network, IN 2920 107 100 LACOE, 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 394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US 33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US 18838 UNALLOCATED 168.8.240.0/20 3480 PEACHNET-AS3480, US 18838 UNALLOCATED 168.9.0.0/20 3480 PEACHNET-AS3480, 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 19176 UNALLOCATED 206.174.145.0/24 32278 GETWIRELESS, US Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 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 /16:2029 /17:432 /18:451 /19:606 /20:932 /21:961 /22:1676 /23:1732 /24:11386 /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 246 258 KENET-AS, KE 8895 131 136 ISU Internet Services Unit ISU, SA 18530 55 162 ISOMEDIA-1, US 23024 52 113 OCDE, US 30041 52 62 RACE, US 19194 43 45 JOVITA, US 18632 34 66 VOLCANO-VISION, US 32440 34 49 LONI, US 16713 33 56 NOANET-WA, US 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 14:88 15:5 18:42 23:53 24:7 31:8 35:12 37:3 38:26 40:1 41:108 42:10 44:7 45:52 46:6 47:1 49:6 50:10 52:21 58:1 59:19 60:4 61:3 62:8 63:89 64:104 65:22 66:70 67:62 68:18 69:47 70:3 71:2 72:28 74:60 76:48 77:9 78:3 79:10 80:17 81:26 82:5 83:6 84:5 85:42 86:7 87:7 89:10 91:45 92:1 93:6 94:6 95:2 96:5 97:3 98:6 101:2 102:15 103:234 104:106 107:31 108:9 109:6 110:2 111:16 114:23 115:1 116:8 117:61 118:32 119:21 121:27 122:8 123:8 124:39 125:4 128:87 129:45 130:89 131:59 132:51 133:156 134:103 135:1 136:205 137:89 138:9 139:7 140:53 141:4 142:52 143:21 144:28 145:2 146:210 147:66 148:194 149:12 150:132 151:11 152:149 153:14 154:30 155:72 156:68 157:35 158:41 159:161 160:30 161:63 162:48 163:77 164:11 165:51 166:4 167:14 168:124 169:11 170:91 172:6 173:11 174:8 175:19 177:8 179:12 180:15 181:1 182:1 184:3 185:53 186:3 187:18 188:14 189:3 190:18 191:36 192:1525 193:302 194:129 195:60 196:167 197:165 198:558 199:347 200:296 201:38 202:611 203:432 204:402 205:143 206:222 207:184 208:128 209:141 210:182 211:13 212:169 213:5 214:8 216:131 217:10 218:22 219:6 220:17 222:5 223:4 End of report