IPv4 R&E Routing Table Report 22:05 GMT Sat 23 Jul, 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: 22224 Prefixes after maximum aggregation (per Origin AS): 12673 Deaggregation factor: 1.75 Unique aggregates announced (without unneeded subnets): 14524 Number of IPv4 prefixes with a valid ROA: 7686 Number of IPv4 prefixes with an invalid ROA: 25 Number of IPv4 prefixes with no ROA: 14513 Total ASes present in the Internet Routing Table: 2811 Prefixes per ASN: 7.91 Origin-only ASes present in the Internet Routing Table: 2430 Origin ASes announcing only one prefix: 1102 Transit ASes present in the Internet Routing Table: 381 Transit-only ASes present in the Internet Routing Table: 61 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: 16 Max AS path prepend of ASN ( 10497) 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: 39850 Number of 32-bit ASNs visible in the Routing Table: 643 Prefixes from 32-bit ASNs in the Routing Table: 1742 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: 291993856 Equivalent to 17 /8s, 103 /16s and 121 /24s Percentage of available address space announced: 7.9 Percentage of allocated address space announced: 7.9 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: 2699 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4649 Total APNIC prefixes after maximum aggregation: 2306 APNIC Deaggregation factor: 2.02 Prefixes being announced from the APNIC address blocks: 4734 Unique aggregates announced from the APNIC address blocks: 2701 APNIC Region origin ASes present in the Internet Routing Table: 590 APNIC Prefixes per ASN: 8.02 APNIC Region origin ASes announcing only one prefix: 259 APNIC Region transit ASes present in the Internet Routing Table: 70 Average APNIC Region AS path length visible: 4.1 Max APNIC Region AS path length visible: 16 Number of APNIC region 32-bit ASNs visible in the Routing Table: 234 Number of APNIC addresses announced to Internet: 46869248 Equivalent to 2 /8s, 203 /16s and 43 /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: 11754 Total ARIN prefixes after maximum aggregation: 6768 ARIN Deaggregation factor: 1.74 Prefixes being announced from the ARIN address blocks: 11508 Unique aggregates announced from the ARIN address blocks: 7782 ARIN Region origin ASes present in the Internet Routing Table: 1263 ARIN Prefixes per ASN: 9.11 ARIN Region origin ASes announcing only one prefix: 444 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: 179 Number of ARIN addresses announced to Internet: 174427392 Equivalent to 10 /8s, 101 /16s and 141 /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: 3554 Total RIPE prefixes after maximum aggregation: 2867 RIPE Deaggregation factor: 1.24 Prefixes being announced from the RIPE address blocks: 3714 Unique aggregates announced from the RIPE address blocks: 3075 RIPE Region origin ASes present in the Internet Routing Table: 683 RIPE Prefixes per ASN: 5.44 RIPE Region origin ASes announcing only one prefix: 310 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: 138 Number of RIPE addresses announced to Internet: 63169024 Equivalent to 3 /8s, 195 /16s and 226 /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: 1407 Total LACNIC prefixes after maximum aggregation: 566 LACNIC Deaggregation factor: 2.49 Prefixes being announced from the LACNIC address blocks: 1407 Unique aggregates announced from the LACNIC address blocks: 761 LACNIC Region origin ASes present in the Internet Routing Table: 161 LACNIC Prefixes per ASN: 8.74 LACNIC Region origin ASes announcing only one prefix: 63 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: 4756736 Equivalent to 0 /8s, 72 /16s and 149 /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: 854 Total AfriNIC prefixes after maximum aggregation: 160 AfriNIC Deaggregation factor: 5.34 Prefixes being announced from the AfriNIC address blocks: 856 Unique aggregates announced from the AfriNIC address blocks: 200 AfriNIC Region origin ASes present in the Internet Routing Table: 48 AfriNIC Prefixes per ASN: 17.83 AfriNIC Region origin ASes announcing only one prefix: 26 AfriNIC Region transit ASes present in the Internet Routing Table: 9 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: 26 Number of AfriNIC addresses announced to Internet: 2770176 Equivalent to 0 /8s, 42 /16s and 69 /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 432 182 24 CSTNET-AS-AP Computer Network Informati 1237 185 74 134 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 77 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 2588 4359 1106 AMAZON-02, US 14618 615 3990 471 AMAZON-AES, US 8075 251 11727 221 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 212 702 180 DNIC-AS-00668, US 376 203 178 152 RISQ-AS, CA 5786 200 16 1 UPRENET, PR 2152 153 507 91 CSUNET-NW, US 18558 134 18 4 NETBLK-RCOEK, US 270 120 329 85 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 680 283 1951 250 DFN Verein zur Foerderung eines Deutsch 786 186 1775 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 98 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 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 2715 59 102 39 Fundacao Carlos Chagas Filho de Amparo 1251 58 37 19 FUNDACAO DE AMPARO A PESQUISA DO ESTADO 4270 43 16 1 Red de Interconexion Universitaria, AR 28571 41 40 18 UNIVERSIDADE DE SAO PAULO, BR 61468 41 3 15 CEDIA, EC 19611 37 17 2 Associacao Antonio Vieira - Unisinos, B 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 228 82 3 KENET-AS, KE 8094 48 48 15 PUKNET, ZA 327687 38 28 3 RENU, UG 327700 33 16 1 MoRENet, MZ 37182 19 8 1 TERNET, TZ 37074 13 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA 37654 10 1 6 RwEdNet-AS, RW 36982 8 33 8 UCT, 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 2588 4359 1106 AMAZON-02, US 14618 615 3990 471 AMAZON-AES, US 2907 572 2140 454 SINET-AS Research Organization of Infor 7497 432 182 24 CSTNET-AS-AP Computer Network Informati 2018 377 319 73 TENET-1, ZA 680 283 1951 250 DFN Verein zur Foerderung eines Deutsch 8075 251 11727 221 MICROSOFT-CORP-MSN-AS-BLOCK, US 36914 228 82 3 KENET-AS, KE 668 212 702 180 DNIC-AS-00668, US 376 203 178 152 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 377 304 TENET-1, ZA 36914 228 225 KENET-AS, KE 5786 200 199 UPRENET, PR 58647 175 173 KAGAWAU-AS Kagawa University, JP 14618 615 144 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 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 192.31.196.0/24 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 /11:8 /12:28 /13:36 /14:80 /15:199 /16:2146 /17:470 /18:477 /19:614 /20:1009 /21:997 /22:1603 /23:1758 /24:12794 /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 381 2588 AMAZON-02, US 36914 215 228 KENET-AS, KE 14618 202 615 AMAZON-AES, US 8895 133 138 ISU Internet Services Unit ISU, SA 23024 53 114 OCDE, US 8075 34 251 MICROSOFT-CORP-MSN-AS-BLOCK, US 46115 32 35 LUTHER, US 25977 31 45 HCCS, US 28614 31 37 Fundacao Universidade Regional de Blumenau, BR 200521 31 52 SEAP-AGE, ES 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 15:63 16:2 18:55 23:45 24:3 31:7 35:10 37:7 38:9 40:2 41:128 42:10 44:5 45:51 46:10 47:1 49:10 50:9 52:733 54:236 58:2 59:20 60:4 61:3 62:13 63:42 64:140 65:15 66:60 67:63 68:17 69:45 70:28 71:9 72:17 74:75 76:39 77:9 78:4 79:10 80:18 81:28 82:7 83:6 84:4 85:47 86:6 87:2 88:1 89:12 91:56 92:1 93:10 94:4 95:4 96:6 97:1 98:13 99:51 101:6 102:12 103:360 104:106 107:18 108:20 109:12 110:4 111:17 113:2 114:23 115:1 116:6 117:61 118:32 119:24 121:27 122:11 123:8 124:39 125:4 128:86 129:45 130:143 131:81 132:58 133:145 134:100 135:2 136:213 137:88 138:10 139:17 140:52 141:5 142:59 143:35 144:37 145:2 146:131 147:67 148:201 149:15 150:138 151:8 152:83 153:13 154:29 155:65 156:70 157:34 158:50 159:157 160:32 161:31 162:54 163:72 164:25 165:64 166:1 167:23 168:167 169:12 170:128 172:10 173:18 174:1 175:31 176:12 177:11 178:3 179:11 180:19 181:1 182:4 184:3 185:77 186:3 187:19 188:14 189:3 190:33 191:36 192:1526 193:275 194:135 195:44 196:162 197:132 198:538 199:331 200:227 201:38 202:637 203:438 204:342 205:157 206:216 207:195 208:119 209:138 210:184 211:13 212:177 213:16 214:8 216:150 217:11 218:22 219:6 220:17 222:5 223:3 End of report