IPv4 R&E Routing Table Report 22:05 GMT Mon 23 May, 2022 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: 22061 Prefixes after maximum aggregation (per Origin AS): 12542 Deaggregation factor: 1.76 Unique aggregates announced (without unneeded subnets): 14430 Number of IPv4 prefixes with a valid ROA: 7453 Number of IPv4 prefixes with an invalid ROA: 18 Number of IPv4 prefixes with no ROA: 14590 Total ASes present in the Internet Routing Table: 2787 Prefixes per ASN: 7.92 Origin-only ASes present in the Internet Routing Table: 2403 Origin ASes announcing only one prefix: 1095 Transit ASes present in the Internet Routing Table: 384 Transit-only ASes present in the Internet Routing Table: 61 Average AS path length visible in the Internet Routing Table: 4.0 Max AS path length visible: 16 Max AS path prepend of ASN ( 1149) 11 Prefixes from unregistered ASNs in the Routing Table: 5 Number of instances of unregistered ASNs: 5 Number of 32-bit ASNs allocated by the RIRs: 39454 Number of 32-bit ASNs visible in the Routing Table: 624 Prefixes from 32-bit ASNs in the Routing Table: 1682 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 6 Number of addresses announced to Internet: 288032512 Equivalent to 17 /8s, 43 /16s and 7 /24s Percentage of available address space announced: 7.8 Percentage of allocated address space announced: 7.8 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: 2582 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4621 Total APNIC prefixes after maximum aggregation: 2281 APNIC Deaggregation factor: 2.03 Prefixes being announced from the APNIC address blocks: 4699 Unique aggregates announced from the APNIC address blocks: 2666 APNIC Region origin ASes present in the Internet Routing Table: 576 APNIC Prefixes per ASN: 8.16 APNIC Region origin ASes announcing only one prefix: 251 APNIC Region transit ASes present in the Internet Routing Table: 70 Average APNIC Region AS path length visible: 4.3 Max APNIC Region AS path length visible: 16 Number of APNIC region 32-bit ASNs visible in the Routing Table: 223 Number of APNIC addresses announced to Internet: 46637568 Equivalent to 2 /8s, 199 /16s and 162 /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, 131072-151865 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: 11627 Total ARIN prefixes after maximum aggregation: 6669 ARIN Deaggregation factor: 1.74 Prefixes being announced from the ARIN address blocks: 11408 Unique aggregates announced from the ARIN address blocks: 7728 ARIN Region origin ASes present in the Internet Routing Table: 1256 ARIN Prefixes per ASN: 9.08 ARIN Region origin ASes announcing only one prefix: 443 ARIN Region transit ASes present in the Internet Routing Table: 161 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: 175 Number of ARIN addresses announced to Internet: 174219264 Equivalent to 10 /8s, 98 /16s and 96 /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: 3479 Total RIPE prefixes after maximum aggregation: 2827 RIPE Deaggregation factor: 1.23 Prefixes being announced from the RIPE address blocks: 3616 Unique aggregates announced from the RIPE address blocks: 2974 RIPE Region origin ASes present in the Internet Routing Table: 675 RIPE Prefixes per ASN: 5.36 RIPE Region origin ASes announcing only one prefix: 309 RIPE Region transit ASes present in the Internet Routing Table: 101 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 136 Number of RIPE addresses announced to Internet: 59630336 Equivalent to 3 /8s, 141 /16s and 227 /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 196608-213403 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: 1397 Total LACNIC prefixes after maximum aggregation: 566 LACNIC Deaggregation factor: 2.47 Prefixes being announced from the LACNIC address blocks: 1398 Unique aggregates announced from the LACNIC address blocks: 765 LACNIC Region origin ASes present in the Internet Routing Table: 166 LACNIC Prefixes per ASN: 8.42 LACNIC Region origin ASes announcing only one prefix: 69 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 5.0 Max LACNIC Region AS path length visible: 12 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 65 Number of LACNIC addresses announced to Internet: 4742656 Equivalent to 0 /8s, 72 /16s and 94 /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: 932 Total AfriNIC prefixes after maximum aggregation: 194 AfriNIC Deaggregation factor: 4.80 Prefixes being announced from the AfriNIC address blocks: 934 Unique aggregates announced from the AfriNIC address blocks: 291 AfriNIC Region origin ASes present in the Internet Routing Table: 48 AfriNIC Prefixes per ASN: 19.46 AfriNIC Region origin ASes announcing only one prefix: 23 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 3.7 Max AfriNIC Region AS path length visible: 10 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 25 Number of AfriNIC addresses announced to Internet: 2801152 Equivalent to 0 /8s, 42 /16s and 190 /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 571 2140 454 SINET-AS Research Organization of Infor 7497 431 182 24 CSTNET-AS-AP Computer Network Informati 1237 187 74 135 KREONET-AS-KR KISTI, KR 7575 177 330 123 AARNET-AS-AP Australian Academic and Re 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 4538 129 4192 73 ERX-CERNET-BKB China Education and Rese 55824 116 18 11 NKN-CORE-NW NKN Core Network, IN 4621 78 37 10 UNINET-AS-AP UNINET-, TH 4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T 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 16509 2528 4352 1076 AMAZON-02, US 14618 608 3990 464 AMAZON-AES, US 8075 216 10878 193 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 210 702 178 DNIC-AS-00668, US 376 202 178 151 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 2152 152 507 90 CSUNET-NW, US 18558 131 18 4 NETBLK-RCOEK, US 270 120 329 88 AS270, US 23024 114 7 17 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 1967 251 DFN Verein zur Foerderung eines Deutsch 786 186 1774 183 JANET Jisc Services Limited, GB 8895 138 24 4 ISU Internet Services Unit ISU, SA 559 115 550 106 SWITCH Peering requests: peering@switch 1103 99 1520 86 SURFNET-NL SURFnet, The Netherlands, NL 2614 96 27 76 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 553 73 449 73 BELWUE BelWue-Koordination, DE 2200 63 583 58 FR-RENATER Reseau National de telecommu 1930 58 81 53 RCCN Fundacao para a Ciencia e a Tecnol 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 156 208 45 Rede Nacional de Ensino e Pesquisa, BR 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 94 24 54 Red Universitaria Nacional, CL 1251 60 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 19611 46 17 2 Associacao Antonio Vieira - Unisinos, B 4270 44 16 1 Red de Interconexion Universitaria, AR 61468 41 3 15 CEDIA, EC 28614 37 2 2 Fundacao Universidade Regional de Blume 263282 37 5 12 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA 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 2018 375 319 74 TENET-1, ZA 36914 219 82 3 KENET-AS, KE 2561 67 4 32 EUN, EG 8094 49 48 9 PUKNET, ZA 327687 36 28 3 RENU, UG 327700 34 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37182 16 8 1 TERNET, TZ 37074 13 8 2 UG-AS, GH 37501 11 49 6 UOFS, 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 16509 2528 4352 1076 AMAZON-02, US 14618 608 3990 464 AMAZON-AES, US 2907 571 2140 454 SINET-AS Research Organization of Infor 7497 431 182 24 CSTNET-AS-AP Computer Network Informati 2018 375 319 74 TENET-1, ZA 680 284 1967 251 DFN Verein zur Foerderung eines Deutsch 36914 219 82 3 KENET-AS, KE 8075 216 10878 193 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 210 702 178 DNIC-AS-00668, US 376 202 178 151 RISQ-AS, CA Complete listing at https://bgp.nsrc.org/REN/CENIC/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 7497 431 407 CSTNET-AS-AP Computer Network Information Cente 2018 375 301 TENET-1, ZA 36914 219 216 KENET-AS, KE 5786 200 199 UPRENET, PR 58647 175 173 KAGAWAU-AS Kagawa University, JP 14618 608 144 AMAZON-AES, US 8895 138 134 ISU Internet Services Unit ISU, SA 18558 131 127 NETBLK-RCOEK, US 2907 571 117 SINET-AS Research Organization of Information a 1916 156 111 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 22063 UNALLOCATED 153.10.0.0/16 2152 CSUNET-NW, US 22226 UNALLOCATED 156.1.0.0/16 2152 CSUNET-NW, US 19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US 395514 UNALLOCATED 205.213.88.0/24 2381 WISCNET1-AS, US 394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 1103 SURFNET-NL SURFnet, The Netherlands, NL Complete listing at https://bgp.nsrc.org/REN/CENIC/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 76.76.19.0/24 Origin: 16509 AMAZON-02, US 76.76.19.0/24 Transit: 2152 CSUNET-NW, US 103.151.24.0/24 Origin: 16509 AMAZON-02, US 103.151.24.0/24 Transit: 2152 CSUNET-NW, US 192.31.196.0/24 Origin: 112 UNASSIGNED 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Origin: 1103 SURFNET-NL SURFnet, The Netherlands, NL 192.88.99.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US 198.135.168.0/24 Origin: 14618 AMAZON-AES, US 198.135.168.0/24 Transit: 16509 AMAZON-02, US 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 /10:4 /11:7 /12:28 /13:34 /14:81 /15:199 /16:2141 /17:465 /18:473 /19:609 /20:1014 /21:984 /22:1587 /23:1732 /24:12702 /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 16509 364 2528 AMAZON-02, US 36914 206 219 KENET-AS, KE 14618 203 608 AMAZON-AES, US 8895 133 138 ISU Internet Services Unit ISU, SA 23024 53 114 OCDE, US 25977 31 45 HCCS, US 28614 31 37 Fundacao Universidade Regional de Blumenau, BR 327700 31 34 MoRENet, MZ 32440 30 45 LONI, US 263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 3:81 4:2 5:16 6:4 8:2 12:1 13:98 14:86 15:60 16:2 18:52 23:46 24:3 31:6 35:6 37:7 38:9 40:3 41:125 42:10 44:5 45:53 46:11 47:1 49:10 50:11 52:730 54:236 58:1 59:20 60:4 61:3 62:7 63:42 64:141 65:11 66:74 67:62 68:17 69:45 70:27 71:8 72:18 74:42 76:39 77:9 78:3 79:10 80:17 81:28 82:5 83:6 84:4 85:47 86:4 87:2 88:1 89:12 91:52 93:10 94:4 95:4 96:6 97:1 98:13 99:50 101:6 102:12 103:338 104:108 107:18 108:20 109:12 110:4 111:17 114:23 115:1 116:7 117:61 118:32 119:23 121:27 122:11 123:8 124:39 125:3 128:90 129:45 130:147 131:97 132:58 133:145 134:97 135:1 136:211 137:88 138:10 139:17 140:52 141:5 142:58 143:34 144:35 145:2 146:130 147:67 148:200 149:15 150:48 151:8 152:81 153:13 154:29 155:63 156:68 157:27 158:50 159:157 160:30 161:29 162:55 163:71 164:29 165:65 166:1 167:23 168:165 169:12 170:128 171:1 172:10 173:18 174:1 175:31 176:12 177:11 178:2 179:10 180:21 181:1 182:6 184:4 185:65 186:3 187:19 188:14 189:5 190:34 191:34 192:1514 193:317 194:134 195:82 196:162 197:125 198:532 199:330 200:240 201:38 202:639 203:430 204:362 205:195 206:216 207:193 208:114 209:137 210:183 211:15 212:151 213:16 214:8 216:149 217:11 218:22 219:6 220:17 222:5 223:3 End of report