IPv4 R&E Routing Table Report 22:05 GMT Tue 09 Jul, 2024 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: 19653 Prefixes after maximum aggregation (per Origin AS): 11308 Deaggregation factor: 1.74 Unique aggregates announced (without unneeded subnets): 12528 Number of IPv4 prefixes with a valid ROA: 6624 Number of IPv4 prefixes with an invalid ROA: 11 Number of IPv4 prefixes with no ROA: 13018 Total ASes present in the Internet Routing Table: 2846 Prefixes per ASN: 6.91 Origin-only ASes present in the Internet Routing Table: 2450 Origin ASes announcing only one prefix: 1092 Transit ASes present in the Internet Routing Table: 396 Transit-only ASes present in the Internet Routing Table: 86 Paths with bogon ASNs present in the IPv4 Routing Table: 2 Average AS path length visible in the Internet Routing Table: 4.1 Max AS path length visible: 15 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 1 Number of instances of unregistered ASNs: 1 Number of 32-bit ASNs allocated by the RIRs: 44986 Number of 32-bit ASNs visible in the Routing Table: 668 Prefixes from 32-bit ASNs in the Routing Table: 1823 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: 5 Number of addresses announced to Internet: 263604992 Equivalent to 15 /8s, 182 /16s and 75 /24s Percentage of available address space announced: 7.1 Percentage of allocated address space announced: 7.1 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: 2286 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4699 Total APNIC prefixes after maximum aggregation: 2308 APNIC Deaggregation factor: 2.04 Prefixes being announced from the APNIC address blocks: 4750 Unique aggregates announced from the APNIC address blocks: 2694 APNIC Region origin ASes present in the Internet Routing Table: 574 APNIC Prefixes per ASN: 8.28 APNIC Region origin ASes announcing only one prefix: 246 APNIC Region transit ASes present in the Internet Routing Table: 61 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 13 Number of APNIC region 32-bit ASNs visible in the Routing Table: 224 Number of APNIC addresses announced to Internet: 47148544 Equivalent to 2 /8s, 207 /16s and 110 /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: 9064 Total ARIN prefixes after maximum aggregation: 5449 ARIN Deaggregation factor: 1.66 Prefixes being announced from the ARIN address blocks: 8830 Unique aggregates announced from the ARIN address blocks: 5778 ARIN Region origin ASes present in the Internet Routing Table: 1310 ARIN Prefixes per ASN: 6.74 ARIN Region origin ASes announcing only one prefix: 462 ARIN Region transit ASes present in the Internet Routing Table: 173 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 210 Number of ARIN addresses announced to Internet: 136627200 Equivalent to 8 /8s, 36 /16s and 196 /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, 393216-402332 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: 3466 Total RIPE prefixes after maximum aggregation: 2851 RIPE Deaggregation factor: 1.22 Prefixes being announced from the RIPE address blocks: 3642 Unique aggregates announced from the RIPE address blocks: 3121 RIPE Region origin ASes present in the Internet Routing Table: 677 RIPE Prefixes per ASN: 5.38 RIPE Region origin ASes announcing only one prefix: 305 RIPE Region transit ASes present in the Internet Routing Table: 105 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 14 Number of RIPE region 32-bit ASNs visible in the Routing Table: 154 Number of RIPE addresses announced to Internet: 72461056 Equivalent to 4 /8s, 81 /16s and 171 /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: 1370 Total LACNIC prefixes after maximum aggregation: 547 LACNIC Deaggregation factor: 2.50 Prefixes being announced from the LACNIC address blocks: 1370 Unique aggregates announced from the LACNIC address blocks: 735 LACNIC Region origin ASes present in the Internet Routing Table: 167 LACNIC Prefixes per ASN: 8.20 LACNIC Region origin ASes announcing only one prefix: 63 LACNIC Region transit ASes present in the Internet Routing Table: 25 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: 68 Number of LACNIC addresses announced to Internet: 4800768 Equivalent to 0 /8s, 73 /16s and 65 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 1053 Total AfriNIC prefixes after maximum aggregation: 152 AfriNIC Deaggregation factor: 6.93 Prefixes being announced from the AfriNIC address blocks: 1056 Unique aggregates announced from the AfriNIC address blocks: 196 AfriNIC Region origin ASes present in the Internet Routing Table: 31 AfriNIC Prefixes per ASN: 34.06 AfriNIC Region origin ASes announcing only one prefix: 16 AfriNIC Region transit ASes present in the Internet Routing Table: 8 Average AfriNIC Region AS path length visible: 4.4 Max AfriNIC Region AS path length visible: 12 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 12 Number of AfriNIC addresses announced to Internet: 2556928 Equivalent to 0 /8s, 39 /16s and 4 /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 591 2162 464 SINET-AS Research Organization of Informa 7497 446 180 24 CSTNET-AS-AP Computer Network Information 1237 191 74 142 KREONET-AS-KR KISTI, KR 58647 183 18 2 KAGAWAU-AS Kagawa University, JP 7575 169 329 115 AARNET-AS-AP Australian Academic and Rese 55824 131 19 19 NKN-CORE-NW NKN Core Network, IN 4538 129 4192 72 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 69 37 10 UNINET-AS-AP UNINET-, TH 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 8075 535 14185 450 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 205 648 174 DNIC-AS-00668, US 376 202 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2920 176 34 7 LACOE, US 2152 152 507 94 CSUNET-NW, US 18558 140 18 4 NETBLK-RCOEK, US 81 133 517 33 NCREN, US 270 117 328 81 AS270, US 23024 96 7 21 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 680 283 1899 250 DFN Verein zur Foerderung eines Deutschen 786 184 1767 181 JANET Jisc Services Limited, GB 559 113 533 103 SWITCH Peering requests: peering@switch.c 1103 95 1503 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 91 26 71 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog 553 78 462 78 BELWUE BelWue-Koordination, DE 3267 76 26 66 RUNNET, RU 8895 70 24 5 ISU Internet Services Unit ISU, SA 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 28391 153 10 67 Universidad Juarez Autonoma de Tabasco, M 1916 141 176 42 Rede Nacional de Ensino e Pesquisa, BR 11340 109 25 52 Red Universitaria Nacional, CL 271640 66 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 4270 49 17 3 Red de Interconexion Universitaria, AR 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 2715 45 99 34 Fundacao Carlos Chagas Filho de Amparo a 61468 45 5 15 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blumena 3596 37 8 4 Universidad Autonoma Metropolitana, MX 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 36914 441 82 3 KENET-AS, KE 2018 381 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 327700 46 16 1 MoRENet, MZ 37215 36 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37661 13 8 5 NRaE1-AS, NG 37182 11 8 1 TERNET, TZ 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, 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 2907 591 2162 464 SINET-AS Research Organization of Informa 8075 535 14185 450 MICROSOFT-CORP-MSN-AS-BLOCK, US 7497 446 180 24 CSTNET-AS-AP Computer Network Information 36914 441 82 3 KENET-AS, KE 2018 381 319 71 TENET-1, ZA 680 283 1899 250 DFN Verein zur Foerderung eines Deutschen 668 205 648 174 DNIC-AS-00668, US 376 202 162 151 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 1237 191 74 142 KREONET-AS-KR KISTI, KR Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 36914 441 438 KENET-AS, KE 7497 446 422 CSTNET-AS-AP Computer Network Information Cente 2018 381 310 TENET-1, ZA 5786 198 197 UPRENET, PR 58647 183 181 KAGAWAU-AS Kagawa University, JP 2920 176 169 LACOE, US 18558 140 136 NETBLK-RCOEK, US 55824 131 112 NKN-CORE-NW NKN Core Network, IN 81 133 100 NCREN, US 1916 141 99 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 26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 192.31.196.0/24 Origin: 112 RESERVED, ZZ 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 202.46.0.0/20 Origin: 147171 IDNIC-BRIN-AS-ID Badan Riset dan Inovasi 202.46.0.0/20 Transit: 64302 IDNIC-IDREN-AS-ID IDREN - Indonesia Rese 202.46.240.0/20 Origin: 147171 IDNIC-BRIN-AS-ID Badan Riset dan Inovasi 202.46.240.0/20 Transit: 64302 IDNIC-IDREN-AS-ID IDREN - Indonesia Rese 202.46.245.0/24 Origin: 147171 IDNIC-BRIN-AS-ID Badan Riset dan Inovasi 202.46.245.0/24 Transit: 64302 IDNIC-IDREN-AS-ID IDREN - Indonesia Rese 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 /10:3 /11:7 /12:24 /13:30 /14:60 /15:153 /16:2126 /17:449 /18:468 /19:590 /20:909 /21:891 /22:1467 /23:1581 /24:10894 /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 431 441 KENET-AS, KE 8075 109 535 MICROSOFT-CORP-MSN-AS-BLOCK, US 8895 67 70 ISU Internet Services Unit ISU, SA 327700 40 46 MoRENet, MZ 23024 38 96 OCDE, US 32440 36 62 LONI, US 3267 35 76 RUNNET, RU 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 200521 32 55 SEAP-AGE, ES Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 2:1 4:2 5:16 6:4 8:2 12:1 13:31 14:91 23:7 24:3 31:1 35:7 38:10 40:1 41:200 42:10 44:5 45:58 46:6 47:1 49:10 50:7 52:6 58:1 59:19 60:6 61:3 62:15 63:38 64:51 65:5 66:53 67:46 68:17 69:28 70:2 71:1 72:8 74:54 76:39 77:10 78:3 79:10 80:14 81:26 82:6 83:7 84:5 85:42 86:5 87:1 89:11 91:54 92:4 93:5 94:6 95:3 96:5 97:2 98:2 101:1 102:3 103:319 104:77 107:12 108:11 109:8 111:17 113:4 114:24 116:8 117:61 118:34 119:23 121:27 122:8 123:8 124:42 125:5 128:84 129:41 130:95 131:70 132:67 133:158 134:109 135:3 136:197 137:55 138:60 139:5 140:38 141:4 142:29 143:25 144:28 145:6 146:136 147:66 148:194 149:12 150:46 151:11 152:136 153:15 154:37 155:70 156:134 157:23 158:37 159:122 160:30 161:25 162:39 163:64 164:20 165:49 166:1 167:17 168:121 169:6 170:116 171:1 172:3 173:8 175:25 176:9 177:6 178:1 179:14 180:16 181:1 182:1 184:6 185:77 186:3 187:18 188:14 189:3 190:18 191:13 192:1512 193:262 194:135 195:70 196:151 197:308 198:522 199:306 200:258 201:38 202:621 203:438 204:378 205:143 206:207 207:207 208:78 209:127 210:210 211:14 212:106 213:8 214:8 216:97 217:11 218:22 219:5 220:17 222:2 223:14 End of report