IPv4 R&E Routing Table Report 22:05 GMT Sun 04 Aug, 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: 19791 Prefixes after maximum aggregation (per Origin AS): 11330 Deaggregation factor: 1.75 Unique aggregates announced (without unneeded subnets): 12589 Number of IPv4 prefixes with a valid ROA: 6763 Number of IPv4 prefixes with an invalid ROA: 12 Number of IPv4 prefixes with no ROA: 13016 Total ASes present in the Internet Routing Table: 2813 Prefixes per ASN: 7.04 Origin-only ASes present in the Internet Routing Table: 2425 Origin ASes announcing only one prefix: 1077 Transit ASes present in the Internet Routing Table: 388 Transit-only ASes present in the Internet Routing Table: 78 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: 19 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: 45098 Number of 32-bit ASNs visible in the Routing Table: 645 Prefixes from 32-bit ASNs in the Routing Table: 1803 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: 263215616 Equivalent to 15 /8s, 176 /16s and 90 /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: 2402 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4709 Total APNIC prefixes after maximum aggregation: 2305 APNIC Deaggregation factor: 2.04 Prefixes being announced from the APNIC address blocks: 4761 Unique aggregates announced from the APNIC address blocks: 2705 APNIC Region origin ASes present in the Internet Routing Table: 562 APNIC Prefixes per ASN: 8.47 APNIC Region origin ASes announcing only one prefix: 242 APNIC Region transit ASes present in the Internet Routing Table: 61 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 208 Number of APNIC addresses announced to Internet: 47221504 Equivalent to 2 /8s, 208 /16s and 139 /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: 9056 Total ARIN prefixes after maximum aggregation: 5478 ARIN Deaggregation factor: 1.65 Prefixes being announced from the ARIN address blocks: 8814 Unique aggregates announced from the ARIN address blocks: 5829 ARIN Region origin ASes present in the Internet Routing Table: 1306 ARIN Prefixes per ASN: 6.75 ARIN Region origin ASes announcing only one prefix: 457 ARIN Region transit ASes present in the Internet Routing Table: 168 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: 206 Number of ARIN addresses announced to Internet: 136254464 Equivalent to 8 /8s, 31 /16s and 20 /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: 3536 Total RIPE prefixes after maximum aggregation: 2851 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3718 Unique aggregates announced from the RIPE address blocks: 3117 RIPE Region origin ASes present in the Internet Routing Table: 673 RIPE Prefixes per ASN: 5.52 RIPE Region origin ASes announcing only one prefix: 304 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: 153 Number of RIPE addresses announced to Internet: 72395008 Equivalent to 4 /8s, 80 /16s and 169 /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: 1374 Total LACNIC prefixes after maximum aggregation: 536 LACNIC Deaggregation factor: 2.56 Prefixes being announced from the LACNIC address blocks: 1375 Unique aggregates announced from the LACNIC address blocks: 728 LACNIC Region origin ASes present in the Internet Routing Table: 157 LACNIC Prefixes per ASN: 8.76 LACNIC Region origin ASes announcing only one prefix: 56 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: 62 Number of LACNIC addresses announced to Internet: 4717568 Equivalent to 0 /8s, 71 /16s and 252 /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: 1115 Total AfriNIC prefixes after maximum aggregation: 159 AfriNIC Deaggregation factor: 7.01 Prefixes being announced from the AfriNIC address blocks: 1118 Unique aggregates announced from the AfriNIC address blocks: 206 AfriNIC Region origin ASes present in the Internet Routing Table: 36 AfriNIC Prefixes per ASN: 31.06 AfriNIC Region origin ASes announcing only one prefix: 18 AfriNIC Region transit ASes present in the Internet Routing Table: 9 Average AfriNIC Region AS path length visible: 3.7 Max AfriNIC Region AS path length visible: 19 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 16 Number of AfriNIC addresses announced to Internet: 2616576 Equivalent to 0 /8s, 39 /16s and 237 /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 447 180 24 CSTNET-AS-AP Computer Network Information 1237 189 74 144 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 131 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 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 544 14186 458 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 175 34 7 LACOE, US 2152 155 507 97 CENIC-2152, US 18558 135 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 680 282 1899 250 DFN Verein zur Foerderung eines Deutschen 786 184 1767 181 JANET Jisc Services Limited, GB 8895 136 24 5 ISU Internet Services Unit ISU, SA 559 113 533 103 SWITCH Peering requests: peering@switch.c 1103 96 1503 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 89 26 69 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 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 158 176 42 Rede Nacional de Ensino e Pesquisa, BR 28391 153 10 67 Universidad Juarez Autonoma de Tabasco, M 11340 109 25 52 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 4270 46 16 1 Red de Interconexion Universitaria, AR 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 524 82 3 KENET-AS, KE 2018 381 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 327700 45 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37182 14 8 1 TERNET, TZ 37661 13 8 5 NRaE1-AS, NG 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 37654 6 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 591 2162 464 SINET-AS Research Organization of Informa 8075 544 14186 458 MICROSOFT-CORP-MSN-AS-BLOCK, US 36914 524 82 3 KENET-AS, KE 7497 447 180 24 CSTNET-AS-AP Computer Network Information 2018 381 319 71 TENET-1, ZA 680 282 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 189 74 144 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 524 521 KENET-AS, KE 7497 447 423 CSTNET-AS-AP Computer Network Information Cente 2018 381 310 TENET-1, ZA 5786 198 197 UPRENET, PR 58647 180 178 KAGAWAU-AS Kagawa University, JP 2920 175 168 LACOE, US 8895 136 131 ISU Internet Services Unit ISU, SA 18558 135 131 NETBLK-RCOEK, US 1916 158 116 Rede Nacional de Ensino e Pesquisa, BR 55824 131 112 NKN-CORE-NW NKN Core Network, IN 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 /16:2121 /17:447 /18:469 /19:591 /20:904 /21:891 /22:1468 /23:1570 /24:11052 /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 502 524 KENET-AS, KE 8895 131 136 ISU Internet Services Unit ISU, SA 8075 113 544 MICROSOFT-CORP-MSN-AS-BLOCK, US 327700 40 45 MoRENet, MZ 23024 38 96 OCDE, US 32440 36 63 LONI, US 3267 35 76 NIKS, RU 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 13:31 14:91 23:8 24:3 31:1 35:7 37:8 38:10 40:1 41:235 42:10 44:5 45:57 46:6 47:1 49:10 50:7 52:6 58:1 59:19 60:6 61:3 62:15 63:38 64:51 65:1 66:54 67:47 68:17 69:28 70:2 71:1 72:8 74:54 76:42 77:10 78:3 79:10 80:13 81:26 82:6 83:7 84:5 85:42 86:5 87:1 89:11 91:52 92:4 93:13 94:6 95:3 96:5 97:2 98:2 101:1 102:7 103:292 104:79 107:2 108:11 109:8 111:17 113:6 114:24 116:8 117:61 118:34 119:23 121:27 122:8 123:8 124:42 125:5 128:84 129:37 130:93 131:71 132:66 133:155 134:108 135:3 136:197 137:56 138:61 139:5 140:36 141:4 142:29 143:25 144:28 145:6 146:135 147:66 148:193 149:12 150:46 151:11 152:136 153:15 154:37 155:70 156:133 157:23 158:37 159:122 160:30 161:25 162:40 163:65 164:20 165:48 166:1 167:13 168:120 169:6 170:106 171:1 172:3 173:7 175:29 176:9 177:6 178:1 179:13 180:16 181:1 182:9 184:6 185:80 186:3 187:18 188:14 189:3 190:18 191:13 192:1514 193:261 194:132 195:69 196:150 197:312 198:522 199:304 200:289 201:37 202:647 203:447 204:376 205:143 206:209 207:230 208:73 209:127 210:218 211:14 212:165 213:10 214:8 216:99 217:11 218:22 219:5 220:17 222:2 223:14 End of report