IPv4 R&E Routing Table Report 22:05 GMT Wed 04 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: 22041 Prefixes after maximum aggregation (per Origin AS): 12527 Deaggregation factor: 1.76 Unique aggregates announced (without unneeded subnets): 14382 Number of IPv4 prefixes with a valid ROA: 7355 Number of IPv4 prefixes with an invalid ROA: 20 Number of IPv4 prefixes with no ROA: 14666 Total ASes present in the Internet Routing Table: 2790 Prefixes per ASN: 7.90 Origin-only ASes present in the Internet Routing Table: 2404 Origin ASes announcing only one prefix: 1091 Transit ASes present in the Internet Routing Table: 386 Transit-only ASes present in the Internet Routing Table: 58 Average AS path length visible in the Internet Routing Table: 4.1 Max AS path length visible: 16 Max AS path prepend of ASN (211089) 11 Prefixes from unregistered ASNs in the Routing Table: 8 Number of instances of unregistered ASNs: 8 Number of 32-bit ASNs allocated by the RIRs: 39281 Number of 32-bit ASNs visible in the Routing Table: 628 Prefixes from 32-bit ASNs in the Routing Table: 1708 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: 5 Number of addresses announced to Internet: 288183296 Equivalent to 17 /8s, 45 /16s and 84 /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: 2576 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4632 Total APNIC prefixes after maximum aggregation: 2290 APNIC Deaggregation factor: 2.02 Prefixes being announced from the APNIC address blocks: 4708 Unique aggregates announced from the APNIC address blocks: 2665 APNIC Region origin ASes present in the Internet Routing Table: 579 APNIC Prefixes per ASN: 8.13 APNIC Region origin ASes announcing only one prefix: 247 APNIC Region transit ASes present in the Internet Routing Table: 70 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 16 Number of APNIC region 32-bit ASNs visible in the Routing Table: 226 Number of APNIC addresses announced to Internet: 46656256 Equivalent to 2 /8s, 199 /16s and 235 /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: 11575 Total ARIN prefixes after maximum aggregation: 6644 ARIN Deaggregation factor: 1.74 Prefixes being announced from the ARIN address blocks: 11396 Unique aggregates announced from the ARIN address blocks: 7707 ARIN Region origin ASes present in the Internet Routing Table: 1258 ARIN Prefixes per ASN: 9.06 ARIN Region origin ASes announcing only one prefix: 448 ARIN Region transit ASes present in the Internet Routing Table: 164 Average ARIN Region AS path length visible: 3.7 Max ARIN Region AS path length visible: 13 Number of ARIN region 32-bit ASNs visible in the Routing Table: 175 Number of ARIN addresses announced to Internet: 174341888 Equivalent to 10 /8s, 100 /16s and 63 /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: 3485 Total RIPE prefixes after maximum aggregation: 2826 RIPE Deaggregation factor: 1.23 Prefixes being announced from the RIPE address blocks: 3589 Unique aggregates announced from the RIPE address blocks: 2947 RIPE Region origin ASes present in the Internet Routing Table: 670 RIPE Prefixes per ASN: 5.36 RIPE Region origin ASes announcing only one prefix: 305 RIPE Region transit ASes present in the Internet Routing Table: 99 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 16 Number of RIPE region 32-bit ASNs visible in the Routing Table: 134 Number of RIPE addresses announced to Internet: 59557888 Equivalent to 3 /8s, 140 /16s and 200 /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: 1410 Total LACNIC prefixes after maximum aggregation: 567 LACNIC Deaggregation factor: 2.49 Prefixes being announced from the LACNIC address blocks: 1411 Unique aggregates announced from the LACNIC address blocks: 768 LACNIC Region origin ASes present in the Internet Routing Table: 167 LACNIC Prefixes per ASN: 8.45 LACNIC Region origin ASes announcing only one prefix: 69 LACNIC Region transit ASes present in the Internet Routing Table: 23 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: 66 Number of LACNIC addresses announced to Internet: 4743424 Equivalent to 0 /8s, 72 /16s and 97 /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: 931 Total AfriNIC prefixes after maximum aggregation: 192 AfriNIC Deaggregation factor: 4.85 Prefixes being announced from the AfriNIC address blocks: 932 Unique aggregates announced from the AfriNIC address blocks: 290 AfriNIC Region origin ASes present in the Internet Routing Table: 52 AfriNIC Prefixes per ASN: 17.92 AfriNIC Region origin ASes announcing only one prefix: 22 AfriNIC Region transit ASes present in the Internet Routing Table: 12 Average AfriNIC Region AS path length visible: 3.8 Max AfriNIC Region AS path length visible: 10 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 27 Number of AfriNIC addresses announced to Internet: 2882560 Equivalent to 0 /8s, 43 /16s and 252 /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 578 2140 457 SINET-AS Research Organization of Infor 7497 432 182 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 167 18 2 KAGAWAU-AS Kagawa University, JP 4538 129 4192 73 ERX-CERNET-BKB China Education and Rese 55824 115 18 11 NKN-CORE-NW NKN Core Network, IN 4621 79 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 2479 4348 1058 AMAZON-02, US 14618 597 3988 457 AMAZON-AES, US 668 210 702 178 DNIC-AS-00668, US 8075 205 10877 185 MICROSOFT-CORP-MSN-AS-BLOCK, US 376 202 178 151 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 2152 152 507 90 CSUNET-NW, US 18558 135 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 680 281 1968 246 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 66 647 61 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 45 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 208 82 3 KENET-AS, KE 2561 67 4 32 EUN, EG 8094 50 48 4 PUKNET, ZA 327687 38 28 3 RENU, UG 327700 36 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37182 18 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 2479 4348 1058 AMAZON-02, US 14618 597 3988 457 AMAZON-AES, US 2907 578 2140 457 SINET-AS Research Organization of Infor 7497 432 182 24 CSTNET-AS-AP Computer Network Informati 2018 375 319 74 TENET-1, ZA 680 281 1968 246 DFN Verein zur Foerderung eines Deutsch 668 210 702 178 DNIC-AS-00668, US 36914 208 82 3 KENET-AS, KE 8075 205 10877 185 MICROSOFT-CORP-MSN-AS-BLOCK, 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 432 408 CSTNET-AS-AP Computer Network Information Cente 2018 375 301 TENET-1, ZA 36914 208 205 KENET-AS, KE 5786 200 199 UPRENET, PR 58647 167 165 KAGAWAU-AS Kagawa University, JP 14618 597 140 AMAZON-AES, US 8895 138 134 ISU Internet Services Unit ISU, SA 18558 135 131 NETBLK-RCOEK, US 2907 578 121 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 14212 UNALLOCATED 198.189.240.0/24 2152 CSUNET-NW, US 19658 UNALLOCATED 199.27.241.0/24 11096 FLORIDANET, US 14212 UNALLOCATED 205.155.0.0/19 2152 CSUNET-NW, US 14212 UNALLOCATED 205.155.240.0/20 2152 CSUNET-NW, 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 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 216.169.147.0/24 Origin: 14618 AMAZON-AES, US 216.169.147.0/24 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 /16:2144 /17:465 /18:478 /19:614 /20:1014 /21:985 /22:1595 /23:1733 /24:12659 /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 362 2479 AMAZON-02, US 14618 196 597 AMAZON-AES, US 36914 195 208 KENET-AS, KE 8895 133 138 ISU Internet Services Unit ISU, SA 23024 53 114 OCDE, US 327700 32 36 MoRENet, MZ 25977 31 45 HCCS, US 28614 31 37 Fundacao Universidade Regional de Blumenau, BR 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 13:97 14:85 15:60 16:2 18:52 23:46 24:3 31:6 35:6 37:7 38:9 40:4 41:128 42:10 44:5 45:47 46:11 47:1 49:10 50:11 52:724 54:235 58:1 59:20 60:4 61:3 62:7 63:42 64:141 65:9 66:71 67:62 68:17 69:45 70:28 71:9 72:18 74:41 76:39 77:9 78:3 79:10 80:17 81:28 82:5 83:6 84:4 85:43 86:4 87:1 88:1 89:12 91:53 93:23 94:4 95:5 96:6 97:1 98:11 99:50 101:6 102:13 103:345 104:108 107:18 108:20 109:12 110:4 111:17 114:23 116:7 117:61 118:32 119:23 121:27 122:11 123:8 124:39 125:4 128:90 129:45 130:146 131:97 132:58 133:140 134:98 135:1 136:211 137:88 138:10 139:16 140:51 141:5 142:58 143:33 144:35 145:2 146:130 147:67 148:200 149:15 150:48 151:8 152:81 153:13 154:27 155:62 156:69 157:31 158:48 159:131 160:30 161:29 162:55 163:75 164:28 165:65 166:1 167:23 168:166 169:12 170:126 171:1 172:10 173:18 174:1 175:31 176:12 177:14 178:2 179:10 180:21 181:1 182:6 184:9 185:59 186:3 187:19 188:14 189:5 190:34 191:33 192:1509 193:317 194:132 195:80 196:163 197:113 198:533 199:330 200:245 201:38 202:639 203:432 204:366 205:195 206:216 207:192 208:114 209:137 210:184 211:15 212:151 213:16 214:7 216:145 217:11 218:22 219:6 220:17 222:5 223:3 End of report