IPv4 R&E Routing Table Report 22:05 GMT Thu 26 Dec, 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: 19931 Prefixes after maximum aggregation (per Origin AS): 11418 Deaggregation factor: 1.75 Unique aggregates announced (without unneeded subnets): 12726 Number of IPv4 prefixes with a valid ROA: 8212 Number of IPv4 prefixes with an invalid ROA: 7 Number of IPv4 prefixes with no ROA: 11712 Total ASes present in the Internet Routing Table: 2798 Prefixes per ASN: 7.12 Origin-only ASes present in the Internet Routing Table: 2417 Origin ASes announcing only one prefix: 1074 Transit ASes present in the Internet Routing Table: 381 Transit-only ASes present in the Internet Routing Table: 67 Paths with bogon ASNs present in the IPv4 Routing Table: 5 Average AS path length visible in the Internet Routing Table: 4.2 Max AS path length visible: 27 Max AS path prepend of ASN (138136) 20 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: 45999 Number of 32-bit ASNs visible in the Routing Table: 676 Prefixes from 32-bit ASNs in the Routing Table: 1839 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: 271017984 Equivalent to 16 /8s, 39 /16s and 104 /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: 2412 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4703 Total APNIC prefixes after maximum aggregation: 2264 APNIC Deaggregation factor: 2.08 Prefixes being announced from the APNIC address blocks: 4766 Unique aggregates announced from the APNIC address blocks: 2691 APNIC Region origin ASes present in the Internet Routing Table: 561 APNIC Prefixes per ASN: 8.50 APNIC Region origin ASes announcing only one prefix: 239 APNIC Region transit ASes present in the Internet Routing Table: 59 Average APNIC Region AS path length visible: 4.6 Max APNIC Region AS path length visible: 27 Number of APNIC region 32-bit ASNs visible in the Routing Table: 208 Number of APNIC addresses announced to Internet: 47203328 Equivalent to 2 /8s, 208 /16s and 68 /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: 9180 Total ARIN prefixes after maximum aggregation: 5601 ARIN Deaggregation factor: 1.64 Prefixes being announced from the ARIN address blocks: 8809 Unique aggregates announced from the ARIN address blocks: 5877 ARIN Region origin ASes present in the Internet Routing Table: 1293 ARIN Prefixes per ASN: 6.81 ARIN Region origin ASes announcing only one prefix: 448 ARIN Region transit ASes present in the Internet Routing Table: 157 Average ARIN Region AS path length visible: 3.6 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 214 Number of ARIN addresses announced to Internet: 135873792 Equivalent to 8 /8s, 25 /16s and 69 /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, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 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: 3533 Total RIPE prefixes after maximum aggregation: 2840 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3838 Unique aggregates announced from the RIPE address blocks: 3224 RIPE Region origin ASes present in the Internet Routing Table: 667 RIPE Prefixes per ASN: 5.75 RIPE Region origin ASes announcing only one prefix: 300 RIPE Region transit ASes present in the Internet Routing Table: 109 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: 80724736 Equivalent to 4 /8s, 207 /16s and 195 /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, 53/8, 57/8, 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: 1373 Total LACNIC prefixes after maximum aggregation: 533 LACNIC Deaggregation factor: 2.58 Prefixes being announced from the LACNIC address blocks: 1373 Unique aggregates announced from the LACNIC address blocks: 705 LACNIC Region origin ASes present in the Internet Routing Table: 155 LACNIC Prefixes per ASN: 8.86 LACNIC Region origin ASes announcing only one prefix: 55 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: 65 Number of LACNIC addresses announced to Internet: 4655616 Equivalent to 0 /8s, 71 /16s and 10 /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: 1138 Total AfriNIC prefixes after maximum aggregation: 176 AfriNIC Deaggregation factor: 6.47 Prefixes being announced from the AfriNIC address blocks: 1142 Unique aggregates announced from the AfriNIC address blocks: 226 AfriNIC Region origin ASes present in the Internet Routing Table: 53 AfriNIC Prefixes per ASN: 21.55 AfriNIC Region origin ASes announcing only one prefix: 32 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: 31 Number of AfriNIC addresses announced to Internet: 2557952 Equivalent to 0 /8s, 39 /16s and 8 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 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 624 2201 461 SINET-AS Research Organization of Informa 7497 444 180 24 CSTNET-AS-AP Computer Network Information 1237 191 74 145 KREONET-AS-KR KISTI, KR 58647 182 18 2 KAGAWAU-AS Kagawa University, JP 7575 173 313 116 AARNET-AS-AP Australian Academic and Rese 55824 145 19 20 NKN-CORE-NW NKN Core Network, IN 4538 139 4192 71 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 59 4 34 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 709 16016 597 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 205 646 174 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA 5786 187 16 1 UPRENET, PR 2920 173 34 7 LACOE, US 2152 152 507 97 CENIC-2152, US 18558 140 18 4 NETBLK-RCOEK, US 81 128 519 34 NCREN, US 270 117 328 81 AS270, US 23024 97 7 19 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 680 284 1899 249 DFN Verein zur Foerderung eines Deutschen 786 185 1767 182 JANET Jisc Services Limited, GB 8895 129 24 5 ISU Internet Services Unit ISU, SA 559 114 533 104 SWITCH Peering requests: peering@switch.c 1103 96 1743 83 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 27 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 158 178 41 Rede Nacional de Ensino e Pesquisa, BR 28391 154 10 68 Universidad Juarez Autonoma de Tabasco, M 11340 109 25 52 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 61468 52 5 17 CEDIA, EC 2715 49 99 35 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 542 82 3 KENET-AS, KE 2018 378 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37215 32 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 327700 13 16 1 MoRENet, MZ 37661 12 8 4 NRaE1-AS, NG 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 37654 6 0 5 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 8075 709 16016 597 MICROSOFT-CORP-MSN-AS-BLOCK, US 2907 624 2201 461 SINET-AS Research Organization of Informa 36914 542 82 3 KENET-AS, KE 7497 444 180 24 CSTNET-AS-AP Computer Network Information 2018 378 319 71 TENET-1, ZA 680 284 1899 249 DFN Verein zur Foerderung eines Deutschen 668 205 646 174 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA 1237 191 74 145 KREONET-AS-KR KISTI, KR 5786 187 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 542 539 KENET-AS, KE 7497 444 420 CSTNET-AS-AP Computer Network Information Cente 2018 378 307 TENET-1, ZA 5786 187 186 UPRENET, PR 58647 182 180 KAGAWAU-AS Kagawa University, JP 2920 173 166 LACOE, US 2907 624 163 SINET-AS Research Organization of Information a 18558 140 136 NETBLK-RCOEK, US 55824 145 125 NKN-CORE-NW NKN Core Network, IN 8895 129 124 ISU Internet Services Unit ISU, SA 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 /15:157 /16:2207 /17:450 /18:476 /19:593 /20:885 /21:903 /22:1475 /23:1582 /24:11075 /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 518 542 KENET-AS, KE 8075 127 709 MICROSOFT-CORP-MSN-AS-BLOCK, US 8895 124 129 ISU Internet Services Unit ISU, SA 23024 37 97 OCDE, US 32440 36 61 LONI, US 3267 34 77 NIKS, RU 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 200521 31 53 SEAP-AGE, ES 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 12:2 13:31 14:92 23:10 24:3 31:2 35:9 37:8 38:11 41:222 42:11 44:4 45:58 46:5 47:1 49:10 50:6 52:6 59:19 60:5 61:3 62:14 63:38 64:51 65:5 66:61 67:45 68:19 69:27 70:2 71:1 72:8 74:57 76:41 77:10 78:3 79:10 80:12 81:26 82:7 83:7 84:5 85:45 86:5 87:1 89:11 91:48 92:4 93:13 94:6 95:3 96:5 97:1 98:2 101:1 102:14 103:301 104:80 107:2 108:11 109:5 111:22 113:5 114:24 116:9 117:61 118:33 119:23 121:27 122:8 123:8 124:41 125:5 128:57 129:37 130:96 131:73 132:65 133:155 134:109 135:4 136:187 137:55 138:65 139:5 140:33 141:4 142:42 143:27 144:27 145:6 146:137 147:65 148:196 149:14 150:76 151:11 152:132 153:14 154:41 155:73 156:131 157:28 158:35 159:119 160:34 161:28 162:34 163:66 164:17 165:51 166:3 167:29 168:119 169:7 170:109 171:1 172:2 173:8 175:16 176:1 177:6 178:2 179:13 180:16 181:1 182:11 184:8 185:80 186:3 187:22 188:15 189:3 190:18 191:13 192:1518 193:267 194:130 195:73 196:145 197:329 198:491 199:303 200:264 201:37 202:644 203:450 204:389 205:142 206:216 207:227 208:76 209:119 210:217 211:3 212:168 213:11 214:8 216:99 217:14 218:23 219:6 220:16 222:2 223:15 End of report