IPv4 R&E Routing Table Report 22:05 GMT Thu 05 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: 19948 Prefixes after maximum aggregation (per Origin AS): 11405 Deaggregation factor: 1.75 Unique aggregates announced (without unneeded subnets): 12715 Number of IPv4 prefixes with a valid ROA: 8204 Number of IPv4 prefixes with an invalid ROA: 8 Number of IPv4 prefixes with no ROA: 11736 Total ASes present in the Internet Routing Table: 2798 Prefixes per ASN: 7.13 Origin-only ASes present in the Internet Routing Table: 2416 Origin ASes announcing only one prefix: 1074 Transit ASes present in the Internet Routing Table: 382 Transit-only ASes present in the Internet Routing Table: 70 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: 45958 Number of 32-bit ASNs visible in the Routing Table: 668 Prefixes from 32-bit ASNs in the Routing Table: 1834 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: 271299328 Equivalent to 16 /8s, 43 /16s and 179 /24s Percentage of available address space announced: 7.3 Percentage of allocated address space announced: 7.3 Percentage of available address space allocated: 100.1 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 2411 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4655 Total APNIC prefixes after maximum aggregation: 2258 APNIC Deaggregation factor: 2.06 Prefixes being announced from the APNIC address blocks: 4714 Unique aggregates announced from the APNIC address blocks: 2685 APNIC Region origin ASes present in the Internet Routing Table: 559 APNIC Prefixes per ASN: 8.43 APNIC Region origin ASes announcing only one prefix: 237 APNIC Region transit ASes present in the Internet Routing Table: 59 Average APNIC Region AS path length visible: 4.5 Max APNIC Region AS path length visible: 27 Number of APNIC region 32-bit ASNs visible in the Routing Table: 206 Number of APNIC addresses announced to Internet: 47190528 Equivalent to 2 /8s, 208 /16s and 18 /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: 9225 Total ARIN prefixes after maximum aggregation: 5604 ARIN Deaggregation factor: 1.65 Prefixes being announced from the ARIN address blocks: 8863 Unique aggregates announced from the ARIN address blocks: 5874 ARIN Region origin ASes present in the Internet Routing Table: 1298 ARIN Prefixes per ASN: 6.83 ARIN Region origin ASes announcing only one prefix: 452 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: 214 Number of ARIN addresses announced to Internet: 136103424 Equivalent to 8 /8s, 28 /16s and 198 /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: 3527 Total RIPE prefixes after maximum aggregation: 2827 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3826 Unique aggregates announced from the RIPE address blocks: 3210 RIPE Region origin ASes present in the Internet Routing Table: 663 RIPE Prefixes per ASN: 5.77 RIPE Region origin ASes announcing only one prefix: 299 RIPE Region transit ASes present in the Internet Routing Table: 108 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: 154 Number of RIPE addresses announced to Internet: 80738304 Equivalent to 4 /8s, 207 /16s and 248 /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: 1384 Total LACNIC prefixes after maximum aggregation: 541 LACNIC Deaggregation factor: 2.56 Prefixes being announced from the LACNIC address blocks: 1385 Unique aggregates announced from the LACNIC address blocks: 722 LACNIC Region origin ASes present in the Internet Routing Table: 156 LACNIC Prefixes per ASN: 8.88 LACNIC Region origin ASes announcing only one prefix: 56 LACNIC Region transit ASes present in the Internet Routing Table: 24 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: 64 Number of LACNIC addresses announced to Internet: 4721408 Equivalent to 0 /8s, 72 /16s and 11 /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: 1153 Total AfriNIC prefixes after maximum aggregation: 171 AfriNIC Deaggregation factor: 6.74 Prefixes being announced from the AfriNIC address blocks: 1157 Unique aggregates announced from the AfriNIC address blocks: 221 AfriNIC Region origin ASes present in the Internet Routing Table: 50 AfriNIC Prefixes per ASN: 23.14 AfriNIC Region origin ASes announcing only one prefix: 30 AfriNIC Region transit ASes present in the Internet Routing Table: 10 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: 30 Number of AfriNIC addresses announced to Internet: 2543104 Equivalent to 0 /8s, 38 /16s and 206 /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 592 2200 462 SINET-AS Research Organization of Informa 7497 446 180 24 CSTNET-AS-AP Computer Network Information 1237 191 74 145 KREONET-AS-KR KISTI, KR 58647 181 18 2 KAGAWAU-AS Kagawa University, JP 7575 170 313 113 AARNET-AS-AP Australian Academic and Rese 4538 139 4192 71 ERX-CERNET-BKB China Education and Resear 55824 132 18 18 NKN-CORE-NW NKN Core Network, IN 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 690 16015 580 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 205 648 174 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 2920 175 34 7 LACOE, US 2152 152 507 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 680 283 1899 249 DFN Verein zur Foerderung eines Deutschen 786 186 1767 183 JANET Jisc Services Limited, GB 8895 132 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 81 676 76 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 110 25 53 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 61468 52 5 18 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 547 82 3 KENET-AS, KE 2018 380 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37215 32 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 327700 16 16 1 MoRENet, MZ 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 690 16015 580 MICROSOFT-CORP-MSN-AS-BLOCK, US 2907 592 2200 462 SINET-AS Research Organization of Informa 36914 547 82 3 KENET-AS, KE 7497 446 180 24 CSTNET-AS-AP Computer Network Information 2018 380 319 71 TENET-1, ZA 680 283 1899 249 DFN Verein zur Foerderung eines Deutschen 668 205 648 174 DNIC-AS-00668, US 376 201 162 150 RISQ-AS, CA 5786 198 16 1 UPRENET, PR 1237 191 74 145 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 547 544 KENET-AS, KE 7497 446 422 CSTNET-AS-AP Computer Network Information Cente 2018 380 309 TENET-1, ZA 5786 198 197 UPRENET, PR 58647 181 179 KAGAWAU-AS Kagawa University, JP 2920 175 168 LACOE, US 18558 140 136 NETBLK-RCOEK, US 2907 592 130 SINET-AS Research Organization of Information a 8895 132 127 ISU Internet Services Unit ISU, SA 1916 158 117 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 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 /16:2211 /17:452 /18:476 /19:600 /20:886 /21:901 /22:1477 /23:1582 /24:11078 /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 523 547 KENET-AS, KE 8895 127 132 ISU Internet Services Unit ISU, SA 8075 123 690 MICROSOFT-CORP-MSN-AS-BLOCK, US 23024 37 95 OCDE, US 32440 37 63 LONI, US 3267 34 77 NIKS, RU 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US 200521 32 55 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 13:30 14:93 23:10 24:3 31:2 35:8 37:8 38:11 41:227 42:11 44:4 45:57 46:5 47:1 49:10 50:6 52:6 59:19 60:5 61:3 62:14 63:38 64:51 65:5 66:60 67:46 68:19 69:28 70:2 71:1 72:8 74:59 76:42 77:10 78:3 79:10 80:12 81:26 82:7 83:7 84:4 85:45 86:5 87:1 89:11 91:48 92:4 93:13 94:6 95:3 96:5 97:1 98:2 101:1 102:14 103:297 104:79 107:2 108:11 109:5 111:22 113:5 114:24 116:9 117:61 118:33 119:23 121:27 122:8 123:8 124:42 125:5 128:57 129:38 130:96 131:73 132:65 133:154 134:109 135:4 136:198 137:55 138:65 139:5 140:36 141:4 142:57 143:27 144:30 145:6 146:137 147:65 148:196 149:13 150:46 151:11 152:139 153:14 154:40 155:71 156:133 157:29 158:32 159:119 160:31 161:27 162:34 163:66 164:17 165:49 166:3 167:29 168:119 169:7 170:108 171:1 172:2 173:8 175:16 176:1 177:6 178:2 179:10 180:16 181:1 182:11 184:6 185:78 186:3 187:21 188:14 189:2 190:18 191:13 192:1518 193:265 194:129 195:71 196:146 197:334 198:490 199:302 200:283 201:37 202:641 203:451 204:388 205:141 206:216 207:227 208:76 209:118 210:218 211:3 212:171 213:10 214:8 216:98 217:11 218:23 219:6 220:17 222:2 223:15 End of report