IPv4 R&E Routing Table Report 22:05 GMT Fri 03 Jun, 2022 IPv4 BGP Table (R&E) as seen at CENIC. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/CENIC/ Analysis Summary ---------------- BGP routing table entries examined: 22192 Prefixes after maximum aggregation (per Origin AS): 12569 Deaggregation factor: 1.77 Unique aggregates announced (without unneeded subnets): 14479 Number of IPv4 prefixes with a valid ROA: 7477 Number of IPv4 prefixes with an invalid ROA: 18 Number of IPv4 prefixes with no ROA: 14697 Total ASes present in the Internet Routing Table: 2795 Prefixes per ASN: 7.94 Origin-only ASes present in the Internet Routing Table: 2409 Origin ASes announcing only one prefix: 1097 Transit ASes present in the Internet Routing Table: 386 Transit-only ASes present in the Internet Routing Table: 62 Paths with bogon ASNs present in the IPv4 Routing Table: 2 Average AS path length visible in the Internet Routing Table: 4.0 Max AS path length visible: 16 Max AS path prepend of ASN ( 10497) 11 Prefixes from unregistered ASNs in the Routing Table: 5 Number of instances of unregistered ASNs: 5 Number of 32-bit ASNs allocated by the RIRs: 39539 Number of 32-bit ASNs visible in the Routing Table: 624 Prefixes from 32-bit ASNs in the Routing Table: 1684 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 6 Number of addresses announced to Internet: 288235008 Equivalent to 17 /8s, 46 /16s and 30 /24s Percentage of available address space announced: 7.8 Percentage of allocated address space announced: 7.8 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: 2584 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4619 Total APNIC prefixes after maximum aggregation: 2286 APNIC Deaggregation factor: 2.02 Prefixes being announced from the APNIC address blocks: 4699 Unique aggregates announced from the APNIC address blocks: 2677 APNIC Region origin ASes present in the Internet Routing Table: 577 APNIC Prefixes per ASN: 8.14 APNIC Region origin ASes announcing only one prefix: 251 APNIC Region transit ASes present in the Internet Routing Table: 71 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 16 Number of APNIC region 32-bit ASNs visible in the Routing Table: 224 Number of APNIC addresses announced to Internet: 46639616 Equivalent to 2 /8s, 199 /16s and 170 /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: 11747 Total ARIN prefixes after maximum aggregation: 6677 ARIN Deaggregation factor: 1.76 Prefixes being announced from the ARIN address blocks: 11529 Unique aggregates announced from the ARIN address blocks: 7756 ARIN Region origin ASes present in the Internet Routing Table: 1263 ARIN Prefixes per ASN: 9.13 ARIN Region origin ASes announcing only one prefix: 447 ARIN Region transit ASes present in the Internet Routing Table: 162 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 14 Number of ARIN region 32-bit ASNs visible in the Routing Table: 175 Number of ARIN addresses announced to Internet: 174364416 Equivalent to 10 /8s, 100 /16s and 151 /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: 3485 Total RIPE prefixes after maximum aggregation: 2830 RIPE Deaggregation factor: 1.23 Prefixes being announced from the RIPE address blocks: 3620 Unique aggregates announced from the RIPE address blocks: 2983 RIPE Region origin ASes present in the Internet Routing Table: 673 RIPE Prefixes per ASN: 5.38 RIPE Region origin ASes announcing only one prefix: 307 RIPE Region transit ASes present in the Internet Routing Table: 100 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 135 Number of RIPE addresses announced to Internet: 59632128 Equivalent to 3 /8s, 141 /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 196608-213403 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: 1406 Total LACNIC prefixes after maximum aggregation: 569 LACNIC Deaggregation factor: 2.47 Prefixes being announced from the LACNIC address blocks: 1406 Unique aggregates announced from the LACNIC address blocks: 765 LACNIC Region origin ASes present in the Internet Routing Table: 166 LACNIC Prefixes per ASN: 8.47 LACNIC Region origin ASes announcing only one prefix: 68 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 5.0 Max LACNIC Region AS path length visible: 12 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 65 Number of LACNIC addresses announced to Internet: 4807936 Equivalent to 0 /8s, 73 /16s and 93 /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: 930 Total AfriNIC prefixes after maximum aggregation: 202 AfriNIC Deaggregation factor: 4.60 Prefixes being announced from the AfriNIC address blocks: 932 Unique aggregates announced from the AfriNIC address blocks: 292 AfriNIC Region origin ASes present in the Internet Routing Table: 49 AfriNIC Prefixes per ASN: 19.02 AfriNIC Region origin ASes announcing only one prefix: 24 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 3.7 Max AfriNIC Region AS path length visible: 10 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 25 Number of AfriNIC addresses announced to Internet: 2789376 Equivalent to 0 /8s, 42 /16s and 144 /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 571 2140 454 SINET-AS Research Organization of Infor 7497 432 182 24 CSTNET-AS-AP Computer Network Informati 1237 187 74 135 KREONET-AS-KR KISTI, KR 7575 176 330 122 AARNET-AS-AP Australian Academic and Re 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 4538 128 4192 73 ERX-CERNET-BKB China Education and Rese 55824 115 18 11 NKN-CORE-NW NKN Core Network, IN 4621 78 37 10 UNINET-AS-AP UNINET-, TH 4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 2543 4353 1074 AMAZON-02, US 14618 610 3990 466 AMAZON-AES, US 8075 216 10878 195 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 210 702 178 DNIC-AS-00668, US 376 203 178 152 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 2152 151 507 89 CSUNET-NW, US 18558 131 18 4 NETBLK-RCOEK, US 270 120 329 88 AS270, US 23024 114 7 17 OCDE, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 285 1967 251 DFN Verein zur Foerderung eines Deutsch 786 186 1774 183 JANET Jisc Services Limited, GB 8895 137 24 3 ISU Internet Services Unit ISU, SA 559 115 550 106 SWITCH Peering requests: peering@switch 1103 99 1520 86 SURFNET-NL SURFnet, The Netherlands, NL 2614 96 27 76 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 553 73 449 73 BELWUE BelWue-Koordination, DE 2200 63 583 58 FR-RENATER Reseau National de telecommu 1930 58 81 53 RCCN Fundacao para a Ciencia e a Tecnol Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 156 208 45 Rede Nacional de Ensino e Pesquisa, BR 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 94 24 54 Red Universitaria Nacional, CL 1251 60 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 19611 46 17 2 Associacao Antonio Vieira - Unisinos, B 4270 42 16 1 Red de Interconexion Universitaria, AR 61468 41 3 15 CEDIA, EC 28571 38 42 16 UNIVERSIDADE DE SAO PAULO, BR 28614 37 2 2 Fundacao Universidade Regional de Blume Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 374 319 74 TENET-1, ZA 36914 215 82 3 KENET-AS, KE 2561 67 4 32 EUN, EG 8094 48 48 15 PUKNET, ZA 327687 37 28 3 RENU, UG 327700 34 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37182 18 8 1 TERNET, TZ 37074 13 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 2543 4353 1074 AMAZON-02, US 14618 610 3990 466 AMAZON-AES, US 2907 571 2140 454 SINET-AS Research Organization of Infor 7497 432 182 24 CSTNET-AS-AP Computer Network Informati 2018 374 319 74 TENET-1, ZA 680 285 1967 251 DFN Verein zur Foerderung eines Deutsch 8075 216 10878 195 MICROSOFT-CORP-MSN-AS-BLOCK, US 36914 215 82 3 KENET-AS, KE 668 210 702 178 DNIC-AS-00668, US 376 203 178 152 RISQ-AS, CA Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 432 408 CSTNET-AS-AP Computer Network Information Cente 2018 374 300 TENET-1, ZA 36914 215 212 KENET-AS, KE 5786 200 199 UPRENET, PR 58647 175 173 KAGAWAU-AS Kagawa University, JP 14618 610 144 AMAZON-AES, US 8895 137 134 ISU Internet Services Unit ISU, SA 18558 131 127 NETBLK-RCOEK, US 2907 571 117 SINET-AS Research Organization of Information a 1916 156 111 Rede Nacional de Ensino e Pesquisa, BR Complete listing at https://bgp.nsrc.org/REN/CENIC/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 22063 UNALLOCATED 153.10.0.0/16 2152 CSUNET-NW, US 22226 UNALLOCATED 156.1.0.0/16 2152 CSUNET-NW, US 19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US 395514 UNALLOCATED 205.213.88.0/24 2381 WISCNET1-AS, US 394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 1103 SURFNET-NL SURFnet, The Netherlands, NL Complete listing at https://bgp.nsrc.org/REN/CENIC/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 76.76.19.0/24 Origin: 16509 AMAZON-02, US 76.76.19.0/24 Transit: 2152 CSUNET-NW, US 103.151.24.0/24 Origin: 16509 AMAZON-02, US 103.151.24.0/24 Transit: 2152 CSUNET-NW, US 192.31.196.0/24 Origin: 112 UNASSIGNED 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US 198.135.168.0/24 Origin: 14618 AMAZON-AES, US 198.135.168.0/24 Transit: 16509 AMAZON-02, US Complete listing at https://bgp.nsrc.org/REN/CENIC/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 /9:1 /10:4 /11:7 /12:28 /13:34 /14:80 /15:199 /16:2144 /17:467 /18:472 /19:610 /20:1015 /21:988 /22:1586 /23:1738 /24:12819 /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 16509 366 2543 AMAZON-02, US 14618 205 610 AMAZON-AES, US 36914 202 215 KENET-AS, KE 8895 132 137 ISU Internet Services Unit ISU, SA 23024 53 114 OCDE, US 25977 31 45 HCCS, US 28614 31 37 Fundacao Universidade Regional de Blumenau, BR 32440 30 45 LONI, US 263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN 327700 30 34 MoRENet, MZ Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 3:81 4:2 5:16 6:4 8:2 12:1 13:99 14:85 15:60 16:2 18:52 23:45 24:3 31:7 35:8 37:7 38:9 40:3 41:124 42:10 44:5 45:52 46:11 47:1 49:10 50:11 52:731 54:236 58:1 59:20 60:4 61:3 62:6 63:42 64:141 65:12 66:74 67:62 68:17 69:45 70:27 71:8 72:18 74:42 76:39 77:9 78:3 79:10 80:18 81:28 82:5 83:6 84:4 85:47 86:4 87:2 88:1 89:12 91:51 93:10 94:4 95:4 96:6 97:1 98:13 99:51 101:6 102:13 103:339 104:108 107:18 108:20 109:12 110:4 111:17 113:1 114:23 115:1 116:7 117:61 118:32 119:23 121:27 122:11 123:8 124:39 125:3 128:90 129:45 130:146 131:97 132:58 133:145 134:97 135:1 136:211 137:88 138:10 139:17 140:52 141:5 142:58 143:34 144:35 145:4 146:130 147:67 148:201 149:15 150:138 151:8 152:81 153:13 154:29 155:63 156:68 157:33 158:50 159:157 160:31 161:29 162:56 163:71 164:29 165:65 166:1 167:23 168:165 169:12 170:127 171:1 172:10 173:18 174:1 175:31 176:12 177:11 178:3 179:11 180:21 181:1 182:6 184:4 185:64 186:3 187:19 188:14 189:5 190:34 191:34 192:1516 193:318 194:132 195:83 196:160 197:123 198:535 199:333 200:239 201:38 202:637 203:432 204:363 205:198 206:217 207:194 208:114 209:138 210:184 211:15 212:152 213:16 214:8 216:149 217:11 218:22 219:6 220:17 222:5 223:3 End of report