IPv4 R&E Routing Table Report 22:05 GMT Tue 21 Jun, 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: 22268 Prefixes after maximum aggregation (per Origin AS): 12599 Deaggregation factor: 1.77 Unique aggregates announced (without unneeded subnets): 14550 Number of IPv4 prefixes with a valid ROA: 7540 Number of IPv4 prefixes with an invalid ROA: 17 Number of IPv4 prefixes with no ROA: 14711 Total ASes present in the Internet Routing Table: 2800 Prefixes per ASN: 7.95 Origin-only ASes present in the Internet Routing Table: 2417 Origin ASes announcing only one prefix: 1101 Transit ASes present in the Internet Routing Table: 383 Transit-only ASes present in the Internet Routing Table: 61 Paths with bogon ASNs present in the IPv4 Routing Table: 3 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: 6 Number of instances of unregistered ASNs: 6 Number of 32-bit ASNs allocated by the RIRs: 39630 Number of 32-bit ASNs visible in the Routing Table: 635 Prefixes from 32-bit ASNs in the Routing Table: 1747 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: 4 Number of addresses announced to Internet: 288369920 Equivalent to 17 /8s, 48 /16s and 45 /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: 2631 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4613 Total APNIC prefixes after maximum aggregation: 2292 APNIC Deaggregation factor: 2.01 Prefixes being announced from the APNIC address blocks: 4694 Unique aggregates announced from the APNIC address blocks: 2681 APNIC Region origin ASes present in the Internet Routing Table: 585 APNIC Prefixes per ASN: 8.02 APNIC Region origin ASes announcing only one prefix: 258 APNIC Region transit ASes present in the Internet Routing Table: 69 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: 231 Number of APNIC addresses announced to Internet: 46723584 Equivalent to 2 /8s, 200 /16s and 242 /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: 11780 Total ARIN prefixes after maximum aggregation: 6698 ARIN Deaggregation factor: 1.76 Prefixes being announced from the ARIN address blocks: 11554 Unique aggregates announced from the ARIN address blocks: 7780 ARIN Region origin ASes present in the Internet Routing Table: 1264 ARIN Prefixes per ASN: 9.14 ARIN Region origin ASes announcing only one prefix: 448 ARIN Region transit ASes present in the Internet Routing Table: 162 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: 176 Number of ARIN addresses announced to Internet: 174439424 Equivalent to 10 /8s, 101 /16s and 188 /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: 3519 Total RIPE prefixes after maximum aggregation: 2838 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3665 Unique aggregates announced from the RIPE address blocks: 3035 RIPE Region origin ASes present in the Internet Routing Table: 671 RIPE Prefixes per ASN: 5.46 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: 15 Number of RIPE region 32-bit ASNs visible in the Routing Table: 136 Number of RIPE addresses announced to Internet: 59648512 Equivalent to 3 /8s, 142 /16s and 42 /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: 1425 Total LACNIC prefixes after maximum aggregation: 567 LACNIC Deaggregation factor: 2.51 Prefixes being announced from the LACNIC address blocks: 1424 Unique aggregates announced from the LACNIC address blocks: 765 LACNIC Region origin ASes present in the Internet Routing Table: 168 LACNIC Prefixes per ASN: 8.48 LACNIC Region origin ASes announcing only one prefix: 68 LACNIC Region transit ASes present in the Internet Routing Table: 24 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: 68 Number of LACNIC addresses announced to Internet: 4777984 Equivalent to 0 /8s, 72 /16s and 232 /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: 925 Total AfriNIC prefixes after maximum aggregation: 198 AfriNIC Deaggregation factor: 4.67 Prefixes being announced from the AfriNIC address blocks: 927 Unique aggregates announced from the AfriNIC address blocks: 285 AfriNIC Region origin ASes present in the Internet Routing Table: 46 AfriNIC Prefixes per ASN: 20.15 AfriNIC Region origin ASes announcing only one prefix: 22 AfriNIC Region transit ASes present in the Internet Routing Table: 10 Average AfriNIC Region AS path length visible: 3.7 Max AfriNIC Region AS path length visible: 13 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 24 Number of AfriNIC addresses announced to Internet: 2779392 Equivalent to 0 /8s, 42 /16s and 105 /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 433 182 24 CSTNET-AS-AP Computer Network Informati 1237 187 74 135 KREONET-AS-KR KISTI, KR 7575 176 330 122 AARNET-AS-AP Australian Academic and Re 58647 175 18 2 KAGAWAU-AS Kagawa University, JP 4538 126 4192 73 ERX-CERNET-BKB China Education and Rese 55824 115 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 2552 4354 1079 AMAZON-02, US 14618 614 3990 469 AMAZON-AES, US 8075 227 10878 201 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 211 702 179 DNIC-AS-00668, US 376 204 178 153 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 680 285 1967 251 DFN Verein zur Foerderung eines Deutsch 786 186 1774 183 JANET Jisc Services Limited, GB 8895 137 24 4 ISU Internet Services Unit ISU, SA 559 115 550 106 SWITCH Peering requests: peering@switch 1103 100 1520 87 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 158 208 44 Rede Nacional de Ensino e Pesquisa, BR 28391 152 10 66 Universidad Juarez Autonoma de Tabasco, 11340 95 24 54 Red Universitaria Nacional, CL 1251 59 37 20 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 19611 48 17 2 Associacao Antonio Vieira - Unisinos, B 4270 42 16 1 Red de Interconexion Universitaria, AR 61468 41 3 15 CEDIA, EC 28571 38 26 15 UNIVERSIDADE DE SAO PAULO, BR 28614 37 2 2 Fundacao Universidade Regional de Blume 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 377 319 73 TENET-1, ZA 36914 218 82 3 KENET-AS, KE 2561 67 4 32 EUN, EG 8094 48 48 15 PUKNET, ZA 327687 39 28 3 RENU, UG 327700 32 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37182 18 8 1 TERNET, TZ 37074 12 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 2552 4354 1079 AMAZON-02, US 14618 614 3990 469 AMAZON-AES, US 2907 571 2140 454 SINET-AS Research Organization of Infor 7497 433 182 24 CSTNET-AS-AP Computer Network Informati 2018 377 319 73 TENET-1, ZA 680 285 1967 251 DFN Verein zur Foerderung eines Deutsch 8075 227 10878 201 MICROSOFT-CORP-MSN-AS-BLOCK, US 36914 218 82 3 KENET-AS, KE 668 211 702 179 DNIC-AS-00668, US 376 204 178 153 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 433 409 CSTNET-AS-AP Computer Network Information Cente 2018 377 304 TENET-1, ZA 36914 218 215 KENET-AS, KE 5786 200 199 UPRENET, PR 58647 175 173 KAGAWAU-AS Kagawa University, JP 14618 614 145 AMAZON-AES, US 8895 137 133 ISU Internet Services Unit ISU, SA 18558 131 127 NETBLK-RCOEK, US 2907 571 117 SINET-AS Research Organization of Information a 1916 158 114 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 394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US 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 103.151.24.0/24 Origin: 16509 AMAZON-02, US 103.151.24.0/24 Transit: 2152 CSUNET-NW, US 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 /14:80 /15:198 /16:2145 /17:467 /18:473 /19:609 /20:1007 /21:987 /22:1596 /23:1755 /24:12877 /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 369 2552 AMAZON-02, US 14618 205 614 AMAZON-AES, US 36914 205 218 KENET-AS, KE 8895 132 137 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 32440 30 45 LONI, US 200521 30 51 SEAP-AGE, ES 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 13:99 14:85 15:61 16:2 18:55 23:45 24:3 31:7 35:10 37:7 38:9 40:3 41:124 42:10 44:5 45:50 46:10 47:1 49:10 50:11 52:731 54:236 58:1 59:20 60:4 61:3 62:11 63:42 64:141 65:12 66:74 67:62 68:17 69:45 70:27 71:8 72:18 74:42 76:39 77:10 78:4 79:10 80:18 81:28 82:5 83:6 84:4 85:47 86:4 87:2 88:1 89:12 91:55 93:10 94:4 95:4 96:6 97:1 98:13 99:51 101:6 102:9 103:342 104:108 107:18 108:20 109:12 110:4 111:17 113:1 114:23 115:1 116:6 117:61 118:32 119:24 121:27 122:11 123:8 124:39 125:4 128:90 129:45 130:146 131:84 132:58 133:145 134:99 135:1 136:211 137:88 138:10 139:17 140:51 141:5 142:58 143:35 144:35 145:2 146:131 147:67 148:201 149:15 150:138 151:8 152:82 153:13 154:29 155:65 156:68 157:37 158:50 159:157 160:31 161:29 162:56 163:71 164:29 165:65 166:1 167:23 168:164 169:12 170:128 171:1 172:10 173:19 174:1 175:31 176:12 177:12 178:3 179:11 180:21 181:1 182:4 184:5 185:71 186:3 187:19 188:14 189:5 190:34 191:36 192:1533 193:316 194:132 195:90 196:162 197:123 198:535 199:332 200:232 201:38 202:641 203:431 204:361 205:198 206:216 207:196 208:116 209:138 210:184 211:13 212:173 213:16 214:8 216:149 217:11 218:22 219:6 220:17 222:5 223:3 End of report