IPv4 R&E Routing Table Report 22:05 GMT Sat 25 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: 22236 Prefixes after maximum aggregation (per Origin AS): 12585 Deaggregation factor: 1.77 Unique aggregates announced (without unneeded subnets): 14461 Number of IPv4 prefixes with a valid ROA: 7540 Number of IPv4 prefixes with an invalid ROA: 20 Number of IPv4 prefixes with no ROA: 14676 Total ASes present in the Internet Routing Table: 2798 Prefixes per ASN: 7.95 Origin-only ASes present in the Internet Routing Table: 2416 Origin ASes announcing only one prefix: 1099 Transit ASes present in the Internet Routing Table: 382 Transit-only ASes present in the Internet Routing Table: 60 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: 39671 Number of 32-bit ASNs visible in the Routing Table: 635 Prefixes from 32-bit ASNs in the Routing Table: 1701 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: 288414464 Equivalent to 17 /8s, 48 /16s and 219 /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: 2607 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4634 Total APNIC prefixes after maximum aggregation: 2297 APNIC Deaggregation factor: 2.02 Prefixes being announced from the APNIC address blocks: 4716 Unique aggregates announced from the APNIC address blocks: 2692 APNIC Region origin ASes present in the Internet Routing Table: 588 APNIC Prefixes per ASN: 8.02 APNIC Region origin ASes announcing only one prefix: 260 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: 232 Number of APNIC addresses announced to Internet: 46726400 Equivalent to 2 /8s, 200 /16s and 253 /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: 11792 Total ARIN prefixes after maximum aggregation: 6699 ARIN Deaggregation factor: 1.76 Prefixes being announced from the ARIN address blocks: 11562 Unique aggregates announced from the ARIN address blocks: 7729 ARIN Region origin ASes present in the Internet Routing Table: 1265 ARIN Prefixes per ASN: 9.14 ARIN Region origin ASes announcing only one prefix: 447 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: 176 Number of ARIN addresses announced to Internet: 174448128 Equivalent to 10 /8s, 101 /16s and 222 /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: 3472 Total RIPE prefixes after maximum aggregation: 2818 RIPE Deaggregation factor: 1.23 Prefixes being announced from the RIPE address blocks: 3619 Unique aggregates announced from the RIPE address blocks: 2980 RIPE Region origin ASes present in the Internet Routing Table: 668 RIPE Prefixes per ASN: 5.42 RIPE Region origin ASes announcing only one prefix: 304 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: 134 Number of RIPE addresses announced to Internet: 59658752 Equivalent to 3 /8s, 142 /16s and 82 /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: 1418 Total LACNIC prefixes after maximum aggregation: 565 LACNIC Deaggregation factor: 2.51 Prefixes being announced from the LACNIC address blocks: 1418 Unique aggregates announced from the LACNIC address blocks: 765 LACNIC Region origin ASes present in the Internet Routing Table: 164 LACNIC Prefixes per ASN: 8.65 LACNIC Region origin ASes announcing only one prefix: 65 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: 67 Number of LACNIC addresses announced to Internet: 4823552 Equivalent to 0 /8s, 73 /16s and 154 /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: 914 Total AfriNIC prefixes after maximum aggregation: 200 AfriNIC Deaggregation factor: 4.57 Prefixes being announced from the AfriNIC address blocks: 916 Unique aggregates announced from the AfriNIC address blocks: 290 AfriNIC Region origin ASes present in the Internet Routing Table: 48 AfriNIC Prefixes per ASN: 19.08 AfriNIC Region origin ASes announcing only one prefix: 23 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: 26 Number of AfriNIC addresses announced to Internet: 2756352 Equivalent to 0 /8s, 42 /16s and 15 /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 572 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 128 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 2558 4355 1083 AMAZON-02, US 14618 614 3990 469 AMAZON-AES, US 8075 231 10879 202 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 134 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 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 64 599 59 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 157 208 44 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 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 43 16 1 Red de Interconexion Universitaria, AR 28571 41 40 18 UNIVERSIDADE DE SAO PAULO, BR 61468 41 3 15 CEDIA, EC 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 363 319 73 TENET-1, ZA 36914 216 82 3 KENET-AS, KE 2561 67 4 32 EUN, EG 8094 48 48 15 PUKNET, ZA 327687 38 28 3 RENU, UG 327700 33 16 1 MoRENet, MZ 6879 24 2 9 ENSTINET-, EG 37182 17 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 2558 4355 1083 AMAZON-02, US 14618 614 3990 469 AMAZON-AES, US 2907 572 2140 454 SINET-AS Research Organization of Infor 7497 433 182 24 CSTNET-AS-AP Computer Network Informati 2018 363 319 73 TENET-1, ZA 680 285 1967 251 DFN Verein zur Foerderung eines Deutsch 8075 231 10879 202 MICROSOFT-CORP-MSN-AS-BLOCK, US 36914 216 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 363 290 TENET-1, ZA 36914 216 213 KENET-AS, KE 5786 200 199 UPRENET, PR 58647 175 173 KAGAWAU-AS Kagawa University, JP 14618 614 145 AMAZON-AES, US 8895 138 134 ISU Internet Services Unit ISU, SA 18558 134 130 NETBLK-RCOEK, US 2907 572 118 SINET-AS Research Organization of Information a 1916 157 113 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 192.31.196.0/24 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 /14:80 /15:199 /16:2143 /17:467 /18:476 /19:612 /20:1010 /21:990 /22:1593 /23:1753 /24:12839 /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 368 2558 AMAZON-02, US 14618 205 614 AMAZON-AES, US 36914 203 216 KENET-AS, KE 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 32440 30 45 LONI, US 263282 30 37 FUNDACAO UNIVERSIDADE DO OESTE DE SANTA CATARIN 18632 29 55 VOLCANO-VISION, US 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 14:86 15:62 16:2 18:55 23:45 24:3 31:7 35:10 37:7 38:9 40:3 41:122 42:10 44:5 45:54 46:10 47:1 49:10 50:11 52:732 54:236 58:2 59:20 60:4 61:3 62:11 63:42 64:141 65:13 66:74 67:62 68:17 69:45 70:27 71:8 72:18 74:42 76:39 77:9 78:4 79:10 80:18 81:28 82:6 83:6 84:4 85:47 86:4 87:2 88:1 89:12 91:53 93:10 94:4 95:4 96:6 97:1 98:13 99:51 101:6 102:13 103:349 104:108 107:18 108:20 109:12 110:4 111:17 113:1 114:23 115:1 116:6 117:61 118:32 119:24 121:27 122:11 123:8 124:39 125:4 128:86 129:45 130:145 131:79 132:58 133:145 134:99 135:1 136:213 137:88 138:10 139:17 140:51 141:5 142:58 143:35 144:35 145:2 146:130 147:67 148:201 149:15 150:138 151:8 152:82 153:13 154:29 155:64 156:68 157:34 158:50 159:157 160:31 161:29 162:56 163:71 164:29 165:65 166:1 167:23 168:156 169:12 170:129 172:10 173:19 174:1 175:31 176:12 177:11 178:3 179:11 180:21 181:1 182:4 184:5 185:68 186:3 187:19 188:14 189:5 190:34 191:36 192:1520 193:317 194:130 195:84 196:159 197:123 198:536 199:332 200:234 201:38 202:639 203:439 204:365 205:198 206:217 207:197 208:116 209:138 210:184 211:13 212:152 213:16 214:8 216:149 217:11 218:22 219:6 220:17 222:5 223:3 End of report