IPv4 R&E Routing Table Report 22:05 GMT Tue 04 Apr, 2023 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: 24258 Prefixes after maximum aggregation (per Origin AS): 13500 Deaggregation factor: 1.80 Unique aggregates announced (without unneeded subnets): 16072 Number of IPv4 prefixes with a valid ROA: 9857 Number of IPv4 prefixes with an invalid ROA: 9 Number of IPv4 prefixes with no ROA: 14392 Total ASes present in the Internet Routing Table: 2807 Prefixes per ASN: 8.64 Origin-only ASes present in the Internet Routing Table: 2422 Origin ASes announcing only one prefix: 1077 Transit ASes present in the Internet Routing Table: 385 Transit-only ASes present in the Internet Routing Table: 67 Paths with bogon ASNs present in the IPv4 Routing Table: 2 Average AS path length visible in the Internet Routing Table: 4.0 Max AS path length visible: 19 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 3 Number of instances of unregistered ASNs: 3 Number of 32-bit ASNs allocated by the RIRs: 41592 Number of 32-bit ASNs visible in the Routing Table: 649 Prefixes from 32-bit ASNs in the Routing Table: 1807 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: 296462592 Equivalent to 17 /8s, 171 /16s and 169 /24s Percentage of available address space announced: 8.0 Percentage of allocated address space announced: 8.0 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: 3121 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4691 Total APNIC prefixes after maximum aggregation: 2304 APNIC Deaggregation factor: 2.04 Prefixes being announced from the APNIC address blocks: 4796 Unique aggregates announced from the APNIC address blocks: 2738 APNIC Region origin ASes present in the Internet Routing Table: 576 APNIC Prefixes per ASN: 8.33 APNIC Region origin ASes announcing only one prefix: 250 APNIC Region transit ASes present in the Internet Routing Table: 61 Average APNIC Region AS path length visible: 4.3 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 224 Number of APNIC addresses announced to Internet: 47364352 Equivalent to 2 /8s, 210 /16s and 185 /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: 13594 Total ARIN prefixes after maximum aggregation: 7601 ARIN Deaggregation factor: 1.79 Prefixes being announced from the ARIN address blocks: 13261 Unique aggregates announced from the ARIN address blocks: 9119 ARIN Region origin ASes present in the Internet Routing Table: 1279 ARIN Prefixes per ASN: 10.37 ARIN Region origin ASes announcing only one prefix: 447 ARIN Region transit ASes present in the Internet Routing Table: 168 Average ARIN Region AS path length visible: 3.6 Max ARIN Region AS path length visible: 19 Number of ARIN region 32-bit ASNs visible in the Routing Table: 194 Number of ARIN addresses announced to Internet: 174479360 Equivalent to 10 /8s, 102 /16s and 88 /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: 3531 Total RIPE prefixes after maximum aggregation: 2826 RIPE Deaggregation factor: 1.25 Prefixes being announced from the RIPE address blocks: 3756 Unique aggregates announced from the RIPE address blocks: 3138 RIPE Region origin ASes present in the Internet Routing Table: 675 RIPE Prefixes per ASN: 5.56 RIPE Region origin ASes announcing only one prefix: 299 RIPE Region transit ASes present in the Internet Routing Table: 100 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 141 Number of RIPE addresses announced to Internet: 67355648 Equivalent to 4 /8s, 3 /16s and 196 /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: 558 LACNIC Deaggregation factor: 2.55 Prefixes being announced from the LACNIC address blocks: 1425 Unique aggregates announced from the LACNIC address blocks: 777 LACNIC Region origin ASes present in the Internet Routing Table: 155 LACNIC Prefixes per ASN: 9.19 LACNIC Region origin ASes announcing only one prefix: 55 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 12 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 62 Number of LACNIC addresses announced to Internet: 4472832 Equivalent to 0 /8s, 68 /16s and 64 /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: 1014 Total AfriNIC prefixes after maximum aggregation: 208 AfriNIC Deaggregation factor: 4.88 Prefixes being announced from the AfriNIC address blocks: 1015 Unique aggregates announced from the AfriNIC address blocks: 295 AfriNIC Region origin ASes present in the Internet Routing Table: 53 AfriNIC Prefixes per ASN: 19.15 AfriNIC Region origin ASes announcing only one prefix: 26 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 4.0 Max AfriNIC Region AS path length visible: 15 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 28 Number of AfriNIC addresses announced to Internet: 2788864 Equivalent to 0 /8s, 42 /16s and 142 /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 594 2160 464 SINET-AS Research Organization of Infor 7497 434 182 24 CSTNET-AS-AP Computer Network Informati 1237 189 74 139 KREONET-AS-KR KISTI, KR 58647 178 18 2 KAGAWAU-AS Kagawa University, JP 7575 173 329 119 AARNET-AS-AP Australian Academic and Re 4538 130 4192 73 ERX-CERNET-BKB China Education and Rese 55824 118 18 11 NKN-CORE-NW NKN Core Network, IN 4621 70 37 10 UNINET-AS-AP UNINET-, TH 9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T 4762 65 4 1 MAHIDOL-BORDER-AS Mahidol University, T 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 4090 4581 1786 AMAZON-02, US 14618 762 3994 561 AMAZON-AES, US 8075 332 12788 285 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 209 619 177 DNIC-AS-00668, US 5786 199 16 1 UPRENET, PR 376 196 178 146 RISQ-AS, CA 2152 152 507 92 CSUNET-NW, US 18558 139 18 4 NETBLK-RCOEK, US 81 129 521 32 NCREN, US 270 120 329 85 AS270, 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 1919 249 DFN Verein zur Foerderung eines Deutsch 786 186 1775 183 JANET Jisc Services Limited, GB 8895 137 24 5 ISU Internet Services Unit ISU, SA 559 112 533 104 SWITCH Peering requests: peering@switch 1103 95 1518 84 SURFNET-NL SURFnet, The Netherlands, NL 2614 94 27 74 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 553 73 449 73 BELWUE BelWue-Koordination, DE 1930 65 81 60 RCCN Fundacao para a Ciencia e a Tecnol 2200 64 599 59 FR-RENATER Reseau National de telecommu 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 223 208 43 Rede Nacional de Ensino e Pesquisa, BR 28391 153 10 67 Universidad Juarez Autonoma de Tabasco, 11340 99 24 46 Red Universitaria Nacional, CL 1251 59 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 4270 45 16 1 Red de Interconexion Universitaria, AR 61468 42 3 14 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 19611 37 17 2 Associacao Antonio Vieira - Unisinos, B 28571 37 40 18 UNIVERSIDADE DE SAO PAULO, BR 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 382 319 72 TENET-1, ZA 36914 254 82 3 KENET-AS, KE 2561 67 4 34 EUN, EG 327687 62 28 3 RENU, UG 8094 48 48 15 PUKNET, ZA 3208 32 2 1 ARN, DZ 327700 31 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 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 4090 4581 1786 AMAZON-02, US 14618 762 3994 561 AMAZON-AES, US 2907 594 2160 464 SINET-AS Research Organization of Infor 7497 434 182 24 CSTNET-AS-AP Computer Network Informati 2018 382 319 72 TENET-1, ZA 8075 332 12788 285 MICROSOFT-CORP-MSN-AS-BLOCK, US 680 283 1919 249 DFN Verein zur Foerderung eines Deutsch 36914 254 82 3 KENET-AS, KE 1916 223 208 43 Rede Nacional de Ensino e Pesquisa, BR 668 209 619 177 DNIC-AS-00668, US 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 434 410 CSTNET-AS-AP Computer Network Information Cente 2018 382 310 TENET-1, ZA 36914 254 251 KENET-AS, KE 14618 762 201 AMAZON-AES, US 5786 199 198 UPRENET, PR 1916 223 180 Rede Nacional de Ensino e Pesquisa, BR 58647 178 176 KAGAWAU-AS Kagawa University, JP 18558 139 135 NETBLK-RCOEK, US 8895 137 132 ISU Internet Services Unit ISU, SA 2907 594 130 SINET-AS Research Organization of Information a 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 33008 UNALLOCATED 162.248.66.0/24 11096 FLORIDANET, US 394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 64.186.3.0/24 Origin: 16509 AMAZON-02, US 64.186.3.0/24 Transit: 2152 CSUNET-NW, US 102.36.194.0/23 Origin: 2018 TENET-1, ZA 102.36.194.0/23 Transit: 11537 INTERNET2-RESEARCH-EDU, US 192.31.196.0/24 Origin: 112 UNASSIGNED 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 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 /11:9 /12:29 /13:36 /14:81 /15:201 /16:2143 /17:491 /18:488 /19:622 /20:1027 /21:1160 /22:1867 /23:1978 /24:14121 /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 711 4090 AMAZON-02, US 14618 252 762 AMAZON-AES, US 36914 241 254 KENET-AS, KE 8895 132 137 ISU Internet Services Unit ISU, SA 8075 55 332 MICROSOFT-CORP-MSN-AS-BLOCK, US 23024 52 113 OCDE, US 32440 37 59 LONI, US 18632 34 66 VOLCANO-VISION, US 200521 33 56 SEAP-AGE, ES 28614 32 38 Fundacao Universidade Regional de Blumenau, BR Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 2:1 3:91 4:2 5:17 6:4 8:2 12:1 13:187 14:89 15:126 16:98 18:177 23:49 24:3 31:7 34:2 35:15 37:1 38:9 40:1 41:105 42:10 44:7 45:60 46:11 47:1 49:6 50:11 52:876 54:265 58:2 59:20 60:4 61:3 62:18 63:42 64:147 65:41 66:85 67:65 68:18 69:48 70:27 71:48 72:17 74:84 76:48 77:11 78:4 79:10 80:17 81:28 82:7 83:6 84:8 85:46 86:5 87:2 88:1 89:13 91:56 92:2 93:4 94:8 95:2 96:6 97:2 98:13 99:82 101:6 102:17 103:341 104:113 107:17 108:81 109:12 110:2 111:17 113:4 114:23 115:1 116:8 117:61 118:32 119:21 121:28 122:11 123:8 124:39 125:4 128:86 129:51 130:150 131:72 132:49 133:157 134:102 135:4 136:215 137:105 138:15 139:18 140:52 141:5 142:58 143:39 144:67 145:4 146:129 147:64 148:204 149:16 150:138 151:15 152:148 153:14 154:31 155:73 156:70 157:45 158:43 159:156 160:32 161:37 162:70 163:88 164:22 165:61 166:1 167:26 168:172 169:12 170:159 171:1 172:10 173:22 174:2 175:31 176:13 177:9 178:2 179:10 180:15 181:1 182:1 184:4 185:90 186:3 187:18 188:15 189:3 190:18 191:36 192:1518 193:350 194:138 195:89 196:169 197:158 198:560 199:339 200:279 201:38 202:650 203:445 204:393 205:169 206:218 207:188 208:125 209:146 210:185 211:17 212:176 213:17 214:8 216:172 217:10 218:22 219:6 220:16 222:5 223:4 End of report