IPv4 R&E Routing Table Report 22:05 GMT Wed 30 Oct, 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: 19918 Prefixes after maximum aggregation (per Origin AS): 11399 Deaggregation factor: 1.75 Unique aggregates announced (without unneeded subnets): 12682 Number of IPv4 prefixes with a valid ROA: 8074 Number of IPv4 prefixes with an invalid ROA: 9 Number of IPv4 prefixes with no ROA: 11835 Total ASes present in the Internet Routing Table: 2784 Prefixes per ASN: 7.15 Origin-only ASes present in the Internet Routing Table: 2406 Origin ASes announcing only one prefix: 1062 Transit ASes present in the Internet Routing Table: 378 Transit-only ASes present in the Internet Routing Table: 68 Paths with bogon ASNs present in the IPv4 Routing Table: 5 Average AS path length visible in the Internet Routing Table: 4.1 Max AS path length visible: 20 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 4 Number of instances of unregistered ASNs: 4 Number of 32-bit ASNs allocated by the RIRs: 45675 Number of 32-bit ASNs visible in the Routing Table: 673 Prefixes from 32-bit ASNs in the Routing Table: 1877 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: 3 Number of addresses announced to Internet: 271588864 Equivalent to 16 /8s, 48 /16s and 30 /24s Percentage of available address space announced: 7.3 Percentage of allocated address space announced: 7.3 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: 2419 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4592 Total APNIC prefixes after maximum aggregation: 2256 APNIC Deaggregation factor: 2.04 Prefixes being announced from the APNIC address blocks: 4649 Unique aggregates announced from the APNIC address blocks: 2660 APNIC Region origin ASes present in the Internet Routing Table: 548 APNIC Prefixes per ASN: 8.48 APNIC Region origin ASes announcing only one prefix: 231 APNIC Region transit ASes present in the Internet Routing Table: 57 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 213 Number of APNIC addresses announced to Internet: 47270144 Equivalent to 2 /8s, 209 /16s and 73 /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: 9198 Total ARIN prefixes after maximum aggregation: 5592 ARIN Deaggregation factor: 1.64 Prefixes being announced from the ARIN address blocks: 8844 Unique aggregates announced from the ARIN address blocks: 5866 ARIN Region origin ASes present in the Internet Routing Table: 1296 ARIN Prefixes per ASN: 6.82 ARIN Region origin ASes announcing only one prefix: 450 ARIN Region transit ASes present in the Internet Routing Table: 158 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: 213 Number of ARIN addresses announced to Internet: 136246784 Equivalent to 8 /8s, 30 /16s and 246 /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: 3539 Total RIPE prefixes after maximum aggregation: 2844 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3833 Unique aggregates announced from the RIPE address blocks: 3216 RIPE Region origin ASes present in the Internet Routing Table: 668 RIPE Prefixes per ASN: 5.74 RIPE Region origin ASes announcing only one prefix: 300 RIPE Region transit ASes present in the Internet Routing Table: 107 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 14 Number of RIPE region 32-bit ASNs visible in the Routing Table: 158 Number of RIPE addresses announced to Internet: 80819456 Equivalent to 4 /8s, 209 /16s and 53 /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: 1425 Total LACNIC prefixes after maximum aggregation: 533 LACNIC Deaggregation factor: 2.67 Prefixes being announced from the LACNIC address blocks: 1426 Unique aggregates announced from the LACNIC address blocks: 718 LACNIC Region origin ASes present in the Internet Routing Table: 153 LACNIC Prefixes per ASN: 9.32 LACNIC Region origin ASes announcing only one prefix: 52 LACNIC Region transit ASes present in the Internet Routing Table: 22 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: 63 Number of LACNIC addresses announced to Internet: 4649472 Equivalent to 0 /8s, 70 /16s and 242 /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: 1160 Total AfriNIC prefixes after maximum aggregation: 170 AfriNIC Deaggregation factor: 6.82 Prefixes being announced from the AfriNIC address blocks: 1163 Unique aggregates announced from the AfriNIC address blocks: 219 AfriNIC Region origin ASes present in the Internet Routing Table: 49 AfriNIC Prefixes per ASN: 23.73 AfriNIC Region origin ASes announcing only one prefix: 29 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 3.9 Max AfriNIC Region AS path length visible: 20 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 26 Number of AfriNIC addresses announced to Internet: 2600448 Equivalent to 0 /8s, 39 /16s and 174 /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 2170 464 SINET-AS Research Organization of Informa 7497 449 212 25 CSTNET-AS-AP Computer Network Information 1237 191 74 145 KREONET-AS-KR KISTI, KR 58647 180 18 2 KAGAWAU-AS Kagawa University, JP 7575 172 329 115 AARNET-AS-AP Australian Academic and Rese 55824 132 18 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 2697 60 4 35 ERX-ERNET-AS Education and Research Netwo 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 679 16046 572 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 205 648 174 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 2920 175 34 7 LACOE, US 2152 154 507 97 CENIC-2152, US 18558 140 18 4 NETBLK-RCOEK, US 81 134 517 33 NCREN, US 270 117 328 81 AS270, US 23024 95 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 680 282 1899 249 DFN Verein zur Foerderung eines Deutschen 786 187 1767 184 JANET Jisc Services Limited, GB 8895 133 24 5 ISU Internet Services Unit ISU, SA 559 114 533 104 SWITCH Peering requests: peering@switch.c 1103 97 1759 84 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 26 73 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 77 26 67 NIKS, RU 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 209 178 42 Rede Nacional de Ensino e Pesquisa, BR 28391 154 10 68 Universidad Juarez Autonoma de Tabasco, M 11340 110 25 53 Red Universitaria Nacional, CL 271640 66 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 61468 51 5 17 CEDIA, EC 2715 50 100 36 Fundacao Carlos Chagas Filho de Amparo a 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 4270 46 16 1 Red de Interconexion Universitaria, AR 28614 38 2 2 Fundacao Universidade Regional de Blumena 1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 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 533 82 3 KENET-AS, KE 2018 381 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 327700 36 16 1 MoRENet, MZ 37215 33 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37074 15 8 2 UG-AS, GH 37661 12 8 4 NRaE1-AS, NG 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 8075 679 16046 572 MICROSOFT-CORP-MSN-AS-BLOCK, US 2907 590 2170 464 SINET-AS Research Organization of Informa 36914 533 82 3 KENET-AS, KE 7497 449 212 25 CSTNET-AS-AP Computer Network Information 2018 381 319 71 TENET-1, ZA 680 282 1899 249 DFN Verein zur Foerderung eines Deutschen 1916 209 178 42 Rede Nacional de Ensino e Pesquisa, BR 668 205 648 174 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 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 533 530 KENET-AS, KE 7497 449 424 CSTNET-AS-AP Computer Network Information Cente 2018 381 310 TENET-1, ZA 5786 197 196 UPRENET, PR 58647 180 178 KAGAWAU-AS Kagawa University, JP 2920 175 168 LACOE, US 1916 209 167 Rede Nacional de Ensino e Pesquisa, BR 18558 140 136 NETBLK-RCOEK, US 8895 133 128 ISU Internet Services Unit ISU, SA 2907 590 126 SINET-AS Research Organization of Information a 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 AS11570, US 26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US 65208 PRIVATE 206.206.156.0/22 11570 AS11570, US 65208 PRIVATE 216.161.32.0/23 11570 AS11570, 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 202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U 202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH 203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University 203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 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 /12:25 /13:31 /14:61 /15:158 /16:2212 /17:450 /18:469 /19:595 /20:881 /21:900 /22:1487 /23:1578 /24:11060 /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 512 533 KENET-AS, KE 8895 128 133 ISU Internet Services Unit ISU, SA 8075 119 679 MICROSOFT-CORP-MSN-AS-BLOCK, US 23024 37 95 OCDE, US 32440 37 64 LONI, US 3267 35 77 NIKS, RU 327700 35 36 MoRENet, MZ 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 25977 30 44 HCCS, 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 13:30 14:92 23:10 24:3 31:1 35:8 37:8 38:10 40:1 41:243 42:11 44:5 45:57 46:5 47:1 49:11 50:6 52:6 59:19 60:6 61:3 62:16 63:38 64:51 65:4 66:59 67:46 68:18 69:28 70:2 71:1 72:8 74:57 76:42 77:10 78:3 79:10 80:12 81:26 82:7 83:7 84:5 85:45 86:5 87:1 89:11 91:47 92:4 93:13 94:6 95:3 96:5 97:1 98:2 101:1 102:12 103:290 104:81 107:2 108:11 109:4 111:17 113:6 114:24 116:9 117:61 118:33 119:23 121:27 122:8 123:8 124:42 125:5 128:54 129:37 130:96 131:69 132:52 133:154 134:108 135:4 136:197 137:55 138:63 139:6 140:35 141:4 142:56 143:27 144:31 145:6 146:137 147:64 148:196 149:13 150:46 151:11 152:141 153:14 154:39 155:70 156:133 157:29 158:32 159:122 160:31 161:26 162:34 163:65 164:17 165:50 166:3 167:28 168:120 169:7 170:108 171:1 172:2 173:8 175:5 176:1 177:6 178:2 179:13 180:16 182:1 184:7 185:82 186:3 187:21 188:14 189:3 190:18 191:13 192:1519 193:269 194:130 195:71 196:148 197:327 198:493 199:303 200:326 201:37 202:632 203:448 204:391 205:142 206:216 207:228 208:75 209:118 210:201 211:3 212:170 213:10 214:8 216:97 217:11 218:21 219:5 220:17 222:2 223:15 End of report