IPv4 R&E Routing Table Report 22:05 GMT Sat 12 Aug, 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: 24438 Prefixes after maximum aggregation (per Origin AS): 13616 Deaggregation factor: 1.79 Unique aggregates announced (without unneeded subnets): 16141 Number of IPv4 prefixes with a valid ROA: 10615 Number of IPv4 prefixes with an invalid ROA: 14 Number of IPv4 prefixes with no ROA: 13809 Total ASes present in the Internet Routing Table: 2777 Prefixes per ASN: 8.80 Origin-only ASes present in the Internet Routing Table: 2394 Origin ASes announcing only one prefix: 1057 Transit ASes present in the Internet Routing Table: 383 Transit-only ASes present in the Internet Routing Table: 73 Paths with bogon ASNs present in the IPv4 Routing Table: 2 Average AS path length visible in the Internet Routing Table: 3.9 Max AS path length visible: 15 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: 42421 Number of 32-bit ASNs visible in the Routing Table: 630 Prefixes from 32-bit ASNs in the Routing Table: 1916 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: 6 Number of addresses announced to Internet: 295766528 Equivalent to 17 /8s, 161 /16s and 10 /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: 3107 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4620 Total APNIC prefixes after maximum aggregation: 2264 APNIC Deaggregation factor: 2.04 Prefixes being announced from the APNIC address blocks: 4735 Unique aggregates announced from the APNIC address blocks: 2709 APNIC Region origin ASes present in the Internet Routing Table: 535 APNIC Prefixes per ASN: 8.85 APNIC Region origin ASes announcing only one prefix: 223 APNIC Region transit ASes present in the Internet Routing Table: 56 Average APNIC Region AS path length visible: 4.2 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 201 Number of APNIC addresses announced to Internet: 46447360 Equivalent to 2 /8s, 196 /16s and 187 /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, 131072-153913 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: 13728 Total ARIN prefixes after maximum aggregation: 7763 ARIN Deaggregation factor: 1.77 Prefixes being announced from the ARIN address blocks: 13372 Unique aggregates announced from the ARIN address blocks: 9257 ARIN Region origin ASes present in the Internet Routing Table: 1276 ARIN Prefixes per ASN: 10.48 ARIN Region origin ASes announcing only one prefix: 446 ARIN Region transit ASes present in the Internet Routing Table: 166 Average ARIN Region AS path length visible: 3.5 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 196 Number of ARIN addresses announced to Internet: 174421248 Equivalent to 10 /8s, 101 /16s and 117 /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: 3579 Total RIPE prefixes after maximum aggregation: 2851 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 3814 Unique aggregates announced from the RIPE address blocks: 3165 RIPE Region origin ASes present in the Internet Routing Table: 681 RIPE Prefixes per ASN: 5.60 RIPE Region origin ASes announcing only one prefix: 303 RIPE Region transit ASes present in the Internet Routing Table: 105 Average RIPE Region AS path length visible: 4.6 Max RIPE Region AS path length visible: 13 Number of RIPE region 32-bit ASNs visible in the Routing Table: 143 Number of RIPE addresses announced to Internet: 67374848 Equivalent to 4 /8s, 4 /16s and 15 /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 196608-216475 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: 1462 Total LACNIC prefixes after maximum aggregation: 571 LACNIC Deaggregation factor: 2.56 Prefixes being announced from the LACNIC address blocks: 1463 Unique aggregates announced from the LACNIC address blocks: 785 LACNIC Region origin ASes present in the Internet Routing Table: 164 LACNIC Prefixes per ASN: 8.92 LACNIC Region origin ASes announcing only one prefix: 62 LACNIC Region transit ASes present in the Internet Routing Table: 26 Average LACNIC Region AS path length visible: 5.1 Max LACNIC Region AS path length visible: 13 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 67 Number of LACNIC addresses announced to Internet: 4759296 Equivalent to 0 /8s, 72 /16s and 159 /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: 1046 Total AfriNIC prefixes after maximum aggregation: 164 AfriNIC Deaggregation factor: 6.38 Prefixes being announced from the AfriNIC address blocks: 1048 Unique aggregates announced from the AfriNIC address blocks: 219 AfriNIC Region origin ASes present in the Internet Routing Table: 46 AfriNIC Prefixes per ASN: 22.78 AfriNIC Region origin ASes announcing only one prefix: 23 AfriNIC Region transit ASes present in the Internet Routing Table: 9 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: 23 Number of AfriNIC addresses announced to Internet: 2762240 Equivalent to 0 /8s, 42 /16s and 38 /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 592 2146 462 SINET-AS Research Organization of Infor 7497 435 180 23 CSTNET-AS-AP Computer Network Informati 1237 191 74 139 KREONET-AS-KR KISTI, KR 58647 178 18 2 KAGAWAU-AS Kagawa University, JP 7575 177 329 120 AARNET-AS-AP Australian Academic and Re 4538 130 4192 73 ERX-CERNET-BKB China Education and Rese 55824 125 18 17 NKN-CORE-NW NKN Core Network, IN 4621 69 37 10 UNINET-AS-AP UNINET-, TH 9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T 4762 61 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 4338 4667 1957 AMAZON-02, US 14618 803 4015 600 AMAZON-AES, US 8075 369 12790 312 MICROSOFT-CORP-MSN-AS-BLOCK, US 668 203 652 172 DNIC-AS-00668, US 376 202 178 150 RISQ-AS, CA 5786 197 16 1 UPRENET, PR 2152 145 507 92 CSUNET-NW, US 18558 136 18 4 NETBLK-RCOEK, US 81 118 458 28 NCREN, US 270 118 329 82 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 680 284 1903 249 DFN Verein zur Foerderung eines Deutsch 786 186 1767 183 JANET Jisc Services Limited, GB 8895 136 24 5 ISU Internet Services Unit ISU, SA 559 113 533 105 SWITCH Peering requests: peering@switch 1103 94 1502 83 SURFNET-NL SURFnet, The Netherlands, NL 2614 94 27 74 ROEDUNET, RO 137 82 677 77 ASGARR Consortium GARR, IT 553 74 465 74 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 221 176 42 Rede Nacional de Ensino e Pesquisa, BR 28391 153 10 67 Universidad Juarez Autonoma de Tabasco, 11340 104 24 48 Red Universitaria Nacional, CL 271640 73 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 2715 58 102 38 Fundacao Carlos Chagas Filho de Amparo 4270 48 16 1 Red de Interconexion Universitaria, AR 19611 48 17 2 Associacao Antonio Vieira - Unisinos, B 61468 43 3 14 CEDIA, EC 28614 38 2 2 Fundacao Universidade Regional de Blume 3596 34 4 3 Universidad Autonoma Metropolitana, MX 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 368 319 70 TENET-1, ZA 36914 259 82 3 KENET-AS, KE 327687 165 28 3 RENU, UG 8094 48 48 15 PUKNET, ZA 327700 40 16 1 MoRENet, MZ 3208 32 2 1 ARN, DZ 6879 24 2 9 ENSTINET-, EG 37074 14 8 2 UG-AS, GH 37501 11 49 6 UOFS, ZA 37654 10 1 6 RwEdNet-AS, RW 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 4338 4667 1957 AMAZON-02, US 14618 803 4015 600 AMAZON-AES, US 2907 592 2146 462 SINET-AS Research Organization of Infor 7497 435 180 23 CSTNET-AS-AP Computer Network Informati 8075 369 12790 312 MICROSOFT-CORP-MSN-AS-BLOCK, US 2018 368 319 70 TENET-1, ZA 680 284 1903 249 DFN Verein zur Foerderung eines Deutsch 36914 259 82 3 KENET-AS, KE 1916 221 176 42 Rede Nacional de Ensino e Pesquisa, BR 668 203 652 172 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 435 412 CSTNET-AS-AP Computer Network Information Cente 2018 368 298 TENET-1, ZA 36914 259 256 KENET-AS, KE 14618 803 203 AMAZON-AES, US 5786 197 196 UPRENET, PR 1916 221 179 Rede Nacional de Ensino e Pesquisa, BR 58647 178 176 KAGAWAU-AS Kagawa University, JP 327687 165 162 RENU, UG 18558 136 132 NETBLK-RCOEK, US 8895 136 131 ISU Internet Services Unit ISU, SA 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 192.31.196.0/24 Origin: 112 RESERVED, ZZ 192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL 193.37.39.0/24 Origin: 16509 AMAZON-02, US 193.37.39.0/24 Transit: 2152 CSUNET-NW, US 193.84.26.0/24 Origin: 16509 AMAZON-02, US 193.84.26.0/24 Transit: 2152 CSUNET-NW, US 198.135.168.0/24 Origin: 14618 AMAZON-AES, US 198.135.168.0/24 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 /12:28 /13:36 /14:81 /15:202 /16:2140 /17:501 /18:487 /19:632 /20:1012 /21:1181 /22:1914 /23:1979 /24:14231 /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 705 4338 AMAZON-02, US 14618 263 803 AMAZON-AES, US 36914 247 259 KENET-AS, KE 8895 131 136 ISU Internet Services Unit ISU, SA 8075 68 369 MICROSOFT-CORP-MSN-AS-BLOCK, US 23024 52 113 OCDE, US 32440 37 59 LONI, US 327700 34 40 MoRENet, MZ 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 46115 32 35 LUTHER, US Complete listing at https://bgp.nsrc.org/REN/CENIC/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 2:1 3:119 4:2 5:20 6:4 8:2 12:1 13:186 14:89 15:128 16:109 18:235 23:45 24:3 31:7 34:2 35:14 38:9 40:2 41:116 42:10 44:8 45:62 46:11 47:1 49:9 50:11 52:876 54:262 58:2 59:19 60:4 61:3 62:17 63:42 64:149 65:38 66:89 67:65 68:18 69:52 70:27 71:48 72:15 74:79 76:48 77:11 78:3 79:10 80:13 81:26 82:7 83:6 84:8 85:44 86:10 87:2 88:1 89:13 91:57 92:4 93:4 94:8 95:2 96:6 97:2 98:14 99:79 101:2 102:32 103:301 104:118 107:4 108:82 109:11 111:17 113:4 114:23 115:1 116:10 117:61 118:32 119:18 121:28 122:11 123:8 124:39 125:4 128:87 129:53 130:154 131:72 132:60 133:155 134:107 135:3 136:213 137:151 138:15 139:18 140:43 141:5 142:60 143:35 144:66 145:5 146:131 147:68 148:203 149:17 150:51 151:17 152:138 153:14 154:31 155:81 156:71 157:30 158:46 159:156 160:35 161:47 162:74 163:94 164:22 165:57 166:2 167:25 168:174 169:12 170:162 171:1 172:12 173:26 174:2 175:27 176:13 177:5 178:2 179:12 180:15 181:1 182:1 184:3 185:102 186:3 187:17 188:15 189:3 190:19 191:13 192:1540 193:313 194:134 195:87 196:201 197:166 198:551 199:350 200:340 201:38 202:632 203:428 204:395 205:167 206:220 207:201 208:118 209:150 210:190 211:15 212:173 213:17 214:8 216:177 217:11 218:22 219:5 220:16 222:2 223:14 End of report