IPv4 R&E Routing Table Report 22:05 GMT Sun 28 Jan, 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: 19507 Prefixes after maximum aggregation (per Origin AS): 11090 Deaggregation factor: 1.76 Unique aggregates announced (without unneeded subnets): 12307 Number of IPv4 prefixes with a valid ROA: 6463 Number of IPv4 prefixes with an invalid ROA: 10 Number of IPv4 prefixes with no ROA: 13034 Total ASes present in the Internet Routing Table: 2766 Prefixes per ASN: 7.05 Origin-only ASes present in the Internet Routing Table: 2387 Origin ASes announcing only one prefix: 1074 Transit ASes present in the Internet Routing Table: 379 Transit-only ASes present in the Internet Routing Table: 69 Paths with bogon ASNs present in the IPv4 Routing Table: 7 Average AS path length visible in the Internet Routing Table: 4.1 Max AS path length visible: 14 Max AS path prepend of ASN ( 47805) 11 Prefixes from unregistered ASNs in the Routing Table: 20 Number of instances of unregistered ASNs: 20 Number of 32-bit ASNs allocated by the RIRs: 43496 Number of 32-bit ASNs visible in the Routing Table: 629 Prefixes from 32-bit ASNs in the Routing Table: 1918 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: 1 Number of addresses announced to Internet: 257994240 Equivalent to 15 /8s, 96 /16s and 174 /24s Percentage of available address space announced: 7.0 Percentage of allocated address space announced: 7.0 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: 2384 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4558 Total APNIC prefixes after maximum aggregation: 2238 APNIC Deaggregation factor: 2.04 Prefixes being announced from the APNIC address blocks: 4597 Unique aggregates announced from the APNIC address blocks: 2594 APNIC Region origin ASes present in the Internet Routing Table: 519 APNIC Prefixes per ASN: 8.86 APNIC Region origin ASes announcing only one prefix: 229 APNIC Region transit ASes present in the Internet Routing Table: 57 Average APNIC Region AS path length visible: 4.1 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: 46978304 Equivalent to 2 /8s, 204 /16s and 213 /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: 8779 Total ARIN prefixes after maximum aggregation: 5253 ARIN Deaggregation factor: 1.67 Prefixes being announced from the ARIN address blocks: 8646 Unique aggregates announced from the ARIN address blocks: 5691 ARIN Region origin ASes present in the Internet Routing Table: 1279 ARIN Prefixes per ASN: 6.76 ARIN Region origin ASes announcing only one prefix: 448 ARIN Region transit ASes present in the Internet Routing Table: 166 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: 199 Number of ARIN addresses announced to Internet: 136382208 Equivalent to 8 /8s, 33 /16s and 7 /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: 3525 Total RIPE prefixes after maximum aggregation: 2837 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3636 Unique aggregates announced from the RIPE address blocks: 3027 RIPE Region origin ASes present in the Internet Routing Table: 680 RIPE Prefixes per ASN: 5.35 RIPE Region origin ASes announcing only one prefix: 309 RIPE Region transit ASes present in the Internet Routing Table: 102 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: 148 Number of RIPE addresses announced to Internet: 67164416 Equivalent to 4 /8s, 0 /16s and 217 /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: 1366 Total LACNIC prefixes after maximum aggregation: 566 LACNIC Deaggregation factor: 2.41 Prefixes being announced from the LACNIC address blocks: 1365 Unique aggregates announced from the LACNIC address blocks: 763 LACNIC Region origin ASes present in the Internet Routing Table: 163 LACNIC Prefixes per ASN: 8.37 LACNIC Region origin ASes announcing only one prefix: 61 LACNIC Region transit ASes present in the Internet Routing Table: 24 Average LACNIC Region AS path length visible: 5.1 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 68 Number of LACNIC addresses announced to Internet: 4668160 Equivalent to 0 /8s, 71 /16s and 59 /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: 1259 Total AfriNIC prefixes after maximum aggregation: 179 AfriNIC Deaggregation factor: 7.03 Prefixes being announced from the AfriNIC address blocks: 1262 Unique aggregates announced from the AfriNIC address blocks: 231 AfriNIC Region origin ASes present in the Internet Routing Table: 51 AfriNIC Prefixes per ASN: 24.75 AfriNIC Region origin ASes announcing only one prefix: 27 AfriNIC Region transit ASes present in the Internet Routing Table: 8 Average AfriNIC Region AS path length visible: 3.8 Max AfriNIC Region AS path length visible: 9 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 28 Number of AfriNIC addresses announced to Internet: 2800896 Equivalent to 0 /8s, 42 /16s and 189 /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 590 2162 464 SINET-AS Research Organization of Infor 7497 439 180 23 CSTNET-AS-AP Computer Network Informati 1237 194 74 142 KREONET-AS-KR KISTI, KR 58647 180 18 2 KAGAWAU-AS Kagawa University, JP 7575 176 329 119 AARNET-AS-AP Australian Academic and Re 4538 130 4192 73 ERX-CERNET-BKB China Education and Rese 55824 128 19 18 NKN-CORE-NW NKN Core Network, IN 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, T 4621 70 37 10 UNINET-AS-AP UNINET-, TH 9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T 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 419 12794 353 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 204 652 173 DNIC-AS-00668, US 376 200 162 150 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 2152 148 507 93 CSUNET-NW, US 18558 141 18 4 NETBLK-RCOEK, US 81 126 521 30 NCREN, US 270 118 329 82 AS270, US 23024 109 7 22 OCDE, US 2920 103 34 7 LACOE, 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 249 DFN Verein zur Foerderung eines Deutsch 786 185 1767 182 JANET Jisc Services Limited, GB 8895 131 24 5 ISU Internet Services Unit ISU, SA 559 114 533 104 SWITCH Peering requests: peering@switch 1103 95 1503 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 27 73 ROEDUNET, RO 137 81 676 77 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnol 3267 79 44 68 RUNNET, RU 553 78 462 78 BELWUE BelWue-Koordination, DE 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 154 10 67 Universidad Juarez Autonoma de Tabasco, 1916 149 176 42 Rede Nacional de Ensino e Pesquisa, BR 11340 106 24 50 Red Universitaria Nacional, CL 271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 4270 50 17 3 Red de Interconexion Universitaria, AR 19611 48 17 2 Associacao Antonio Vieira - Unisinos, B 2715 44 99 34 Fundacao Carlos Chagas Filho de Amparo 61468 43 3 14 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 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 475 82 3 KENET-AS, KE 2018 372 319 71 TENET-1, ZA 327687 161 28 3 RENU, UG 8094 47 48 18 PUKNET, ZA 327700 46 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37074 14 8 2 UG-AS, GH 37215 11 8 1 MAREN, MW 37501 11 49 6 UOFS, ZA 37654 11 1 6 RwEdNet-AS, RW 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 590 2162 464 SINET-AS Research Organization of Infor 36914 475 82 3 KENET-AS, KE 7497 439 180 23 CSTNET-AS-AP Computer Network Informati 8075 419 12794 353 MICROSOFT-CORP-MSN-AS-BLOCK, US 2018 372 319 71 TENET-1, ZA 680 283 1899 249 DFN Verein zur Foerderung eines Deutsch 668 204 652 173 DNIC-AS-00668, US 376 200 162 150 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 1237 194 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 475 472 KENET-AS, KE 7497 439 416 CSTNET-AS-AP Computer Network Information Cente 2018 372 301 TENET-1, ZA 5786 197 196 UPRENET, PR 58647 180 178 KAGAWAU-AS Kagawa University, JP 327687 161 158 RENU, UG 18558 141 137 NETBLK-RCOEK, US 8895 131 126 ISU Internet Services Unit ISU, SA 55824 128 110 NKN-CORE-NW NKN Core Network, IN 1916 149 107 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 65208 PRIVATE 63.225.1.0/24 11570 RESERVED, ZZ 65101 PRIVATE 64.54.9.0/24 5653 UCSF, US 65101 PRIVATE 64.54.18.0/24 5653 UCSF, US 65101 PRIVATE 64.54.196.0/24 5653 UCSF, US 26303 UNALLOCATED 76.165.220.0/24 32440 LONI, US 26303 UNALLOCATED 76.165.221.0/24 32440 LONI, US 26303 UNALLOCATED 76.165.222.0/24 32440 LONI, US 394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US 11570 UNALLOCATED 192.94.216.0/24 40498 ABQG, US 11570 UNALLOCATED 192.207.226.0/24 40498 ABQG, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 192.31.196.0/24 Origin: 112 RESERVED, ZZ 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 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 /12:22 /13:29 /14:58 /15:150 /16:2093 /17:448 /18:470 /19:590 /20:897 /21:903 /22:1529 /23:1563 /24:10744 /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 460 475 KENET-AS, KE 8895 126 131 ISU Internet Services Unit ISU, SA 8075 91 419 MICROSOFT-CORP-MSN-AS-BLOCK, US 23024 52 109 OCDE, US 327700 40 46 MoRENet, MZ 32440 38 62 LONI, US 3267 36 79 RUNNET, RU 18632 34 66 VOLCANO-VISION, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 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 13:33 14:89 23:8 24:3 31:7 35:6 38:8 40:1 41:175 42:10 44:7 45:44 46:6 47:1 49:9 50:6 52:6 58:1 59:19 60:6 61:3 62:16 63:38 64:58 65:5 66:62 67:47 68:17 69:26 70:2 71:1 72:8 74:53 76:42 77:10 78:3 79:10 80:12 81:24 82:7 83:7 84:7 85:31 86:4 87:1 89:10 91:53 92:4 93:4 94:8 95:2 96:5 97:2 98:2 101:2 102:39 103:235 104:76 107:16 108:12 109:7 111:17 113:4 114:24 116:8 117:61 118:32 119:19 121:27 122:8 123:8 124:40 125:5 128:84 129:46 130:84 131:73 132:52 133:155 134:109 135:1 136:196 137:140 138:59 139:5 140:39 141:3 142:43 143:23 144:26 145:4 146:133 147:59 148:194 149:13 150:49 151:14 152:132 153:14 154:30 155:63 156:67 157:20 158:35 159:115 160:34 161:24 162:42 163:86 164:13 165:49 166:1 167:16 168:110 169:7 170:115 171:1 172:3 173:8 175:18 176:9 177:6 178:1 179:11 180:15 181:1 182:1 184:2 185:79 186:3 187:16 188:15 189:3 190:18 191:13 192:1472 193:261 194:132 195:72 196:203 197:331 198:515 199:299 200:270 201:37 202:623 203:431 204:368 205:136 206:199 207:147 208:83 209:122 210:195 211:14 212:164 213:6 214:8 216:90 217:10 218:22 219:5 220:16 222:2 223:14 End of report