IPv4 R&E Routing Table Report 22:35 GMT Sun 09 Feb, 2025 IPv4 BGP Table (R&E) as seen at RouteViews PacWave. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/PacWave/ Analysis Summary ---------------- BGP routing table entries examined: 32281 Prefixes after maximum aggregation (per Origin AS): 15567 Deaggregation factor: 2.07 Unique aggregates announced (without unneeded subnets): 18634 Total ASes present in the Internet Routing Table: 2849 Prefixes per ASN: 11.33 Origin-only ASes present in the Internet Routing Table: 2467 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: 62 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 3.5 Max AS path length visible: 20 Max AS path prepend of ASN (395156) 12 Prefixes from unregistered ASNs in the Routing Table: 4 Number of instances of unregistered ASNs: 4 Number of 32-bit ASNs allocated by the RIRs: 46100 Number of 32-bit ASNs visible in the Routing Table: 685 Prefixes from 32-bit ASNs in the Routing Table: 4815 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: 10 Number of addresses announced to Internet: 345311488 Equivalent to 20 /8s, 149 /16s and 9 /24s Percentage of available address space announced: 9.3 Percentage of allocated address space announced: 9.3 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: 4312 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 4734 Total APNIC prefixes after maximum aggregation: 2279 APNIC Deaggregation factor: 2.08 Prefixes being announced from the APNIC address blocks: 4954 Unique aggregates announced from the APNIC address blocks: 2876 APNIC Region origin ASes present in the Internet Routing Table: 568 APNIC Prefixes per ASN: 8.72 APNIC Region origin ASes announcing only one prefix: 242 APNIC Region transit ASes present in the Internet Routing Table: 56 Average APNIC Region AS path length visible: 4.4 Max APNIC Region AS path length visible: 14 Number of APNIC region 32-bit ASNs visible in the Routing Table: 212 Number of APNIC addresses announced to Internet: 47268352 Equivalent to 2 /8s, 209 /16s and 66 /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: 21261 Total ARIN prefixes after maximum aggregation: 9628 ARIN Deaggregation factor: 2.21 Prefixes being announced from the ARIN address blocks: 20464 Unique aggregates announced from the ARIN address blocks: 11201 ARIN Region origin ASes present in the Internet Routing Table: 1337 ARIN Prefixes per ASN: 15.31 ARIN Region origin ASes announcing only one prefix: 468 ARIN Region transit ASes present in the Internet Routing Table: 167 Average ARIN Region AS path length visible: 2.9 Max ARIN Region AS path length visible: 15 Number of ARIN region 32-bit ASNs visible in the Routing Table: 222 Number of ARIN addresses announced to Internet: 208684544 Equivalent to 12 /8s, 112 /16s and 70 /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, 393216-402332 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, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 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: 3696 Total RIPE prefixes after maximum aggregation: 2945 RIPE Deaggregation factor: 1.26 Prefixes being announced from the RIPE address blocks: 4254 Unique aggregates announced from the RIPE address blocks: 3609 RIPE Region origin ASes present in the Internet Routing Table: 669 RIPE Prefixes per ASN: 6.36 RIPE Region origin ASes announcing only one prefix: 300 RIPE Region transit ASes present in the Internet Routing Table: 108 Average RIPE Region AS path length visible: 4.7 Max RIPE Region AS path length visible: 14 Number of RIPE region 32-bit ASNs visible in the Routing Table: 156 Number of RIPE addresses announced to Internet: 82064640 Equivalent to 4 /8s, 228 /16s and 53 /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, 53/8, 57/8, 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: 1408 Total LACNIC prefixes after maximum aggregation: 539 LACNIC Deaggregation factor: 2.61 Prefixes being announced from the LACNIC address blocks: 1414 Unique aggregates announced from the LACNIC address blocks: 713 LACNIC Region origin ASes present in the Internet Routing Table: 156 LACNIC Prefixes per ASN: 9.06 LACNIC Region origin ASes announcing only one prefix: 56 LACNIC Region transit ASes present in the Internet Routing Table: 23 Average LACNIC Region AS path length visible: 5.1 Max LACNIC Region AS path length visible: 14 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 64 Number of LACNIC addresses announced to Internet: 4695808 Equivalent to 0 /8s, 71 /16s and 167 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + 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: 1178 Total AfriNIC prefixes after maximum aggregation: 172 AfriNIC Deaggregation factor: 6.85 Prefixes being announced from the AfriNIC address blocks: 1185 Unique aggregates announced from the AfriNIC address blocks: 225 AfriNIC Region origin ASes present in the Internet Routing Table: 55 AfriNIC Prefixes per ASN: 21.55 AfriNIC Region origin ASes announcing only one prefix: 33 AfriNIC Region transit ASes present in the Internet Routing Table: 11 Average AfriNIC Region AS path length visible: 4.9 Max AfriNIC Region AS path length visible: 20 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 31 Number of AfriNIC addresses announced to Internet: 2593536 Equivalent to 0 /8s, 39 /16s and 147 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 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 626 2202 463 SINET-AS Research Organization of Informa 7497 450 180 24 CSTNET-AS-AP Computer Network Information 1237 192 74 146 KREONET-AS-KR KISTI, KR 58647 183 18 2 KAGAWAU-AS Kagawa University, JP 7575 173 297 116 AARNET-AS-AP Australian Academic and Rese 55824 147 19 21 NKN-CORE-NW NKN Core Network, IN 4538 140 4192 71 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 69 37 10 UNINET-AS-AP UNINET-, TH 2697 59 4 34 ERX-ERNET-AS Education and Research Netwo Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 5155 4920 2428 AMAZON-02, US 396982 2920 3659 445 GOOGLE-CLOUD-PLATFORM, US 714 1158 4392 5 APPLE-ENGINEERING, US 14618 1008 4444 769 AMAZON-AES, US 15169 948 2012 71 GOOGLE, US 8075 713 16017 601 MICROSOFT-CORP-MSN-AS-BLOCK, US 2152 530 507 99 CENIC-2152, US 2920 226 44 49 LACOE, US 668 210 647 178 DNIC-AS-00668, US 376 202 162 151 RISQ-AS, CA Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 680 284 1899 249 DFN Verein zur Foerderung eines Deutschen 786 208 1767 183 JANET Jisc Services Limited, GB 559 114 533 104 SWITCH Peering requests: peering@switch.c 8895 110 24 5 ISU Internet Services Unit ISU, SA 1103 98 1743 84 SURFNET-NL SURFnet, The Netherlands, NL 2614 93 26 73 ROEDUNET, RO 8987 86 243 62 AMAZON EXPANSION, IE 137 80 676 76 ASGARR Consortium GARR, IT 1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog 553 78 462 78 BELWUE BelWue-Koordination, DE Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 236 178 42 Rede Nacional de Ensino e Pesquisa, BR 28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M 11340 109 25 52 Red Universitaria Nacional, CL 4270 52 16 1 Red de Interconexion Universitaria, AR 61468 52 5 17 CEDIA, EC 2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a 19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR 28614 38 2 2 Fundacao Universidade Regional de Blumena 1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 3596 37 8 4 Universidad Autonoma Metropolitana, MX Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 552 82 3 KENET-AS, KE 2018 379 319 71 TENET-1, ZA 8094 37 36 13 PUKNET, ZA 37182 36 8 1 TERNET, TZ 37215 34 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 37661 12 8 4 NRaE1-AS, NG 37501 11 49 6 UOFS, ZA 327700 11 16 1 MoRENet, MZ 36982 8 33 8 UCT, ZA Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 5155 4920 2428 AMAZON-02, US 396982 2920 3659 445 GOOGLE-CLOUD-PLATFORM, US 714 1158 4392 5 APPLE-ENGINEERING, US 14618 1008 4444 769 AMAZON-AES, US 15169 948 2012 71 GOOGLE, US 8075 713 16017 601 MICROSOFT-CORP-MSN-AS-BLOCK, US 2907 626 2202 463 SINET-AS Research Organization of Informa 36914 552 82 3 KENET-AS, KE 2152 530 507 99 CENIC-2152, US 7497 450 180 24 CSTNET-AS-AP Computer Network Information Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 396982 2920 2475 GOOGLE-CLOUD-PLATFORM, US 714 1158 1153 APPLE-ENGINEERING, US 15169 948 877 GOOGLE, US 36914 552 549 KENET-AS, KE 2152 530 431 CENIC-2152, US 7497 450 426 CSTNET-AS-AP Computer Network Information Cente 2018 379 308 TENET-1, ZA 14618 1008 239 AMAZON-AES, US 5786 198 197 UPRENET, PR 1916 236 194 Rede Nacional de Ensino e Pesquisa, BR Complete listing at https://bgp.nsrc.org/REN/PacWave/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 65208 PRIVATE 63.225.1.0/24 11570 AS11570, US 26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US 65208 PRIVATE 206.206.156.0/22 11570 AS11570, US 65208 PRIVATE 216.161.32.0/23 11570 AS11570, US Complete listing at https://bgp.nsrc.org/REN/PacWave/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: 101 WASH-NSF-AS, US 103.165.160.0/24 Origin: 16509 AMAZON-02, US 103.165.160.0/24 Transit: 101 WASH-NSF-AS, US 103.177.50.0/23 Origin: 396982 GOOGLE-CLOUD-PLATFORM, US 103.177.50.0/23 Transit: 15169 GOOGLE, US 164.160.192.0/21 Origin: 37661 NRaE1-AS, NG 164.160.192.0/21 Transit: 37288 WACREN, SN 192.225.212.0/24 Origin: 14618 AMAZON-AES, US 192.225.212.0/24 Transit: 16509 AMAZON-02, US Complete listing at https://bgp.nsrc.org/REN/PacWave/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 /8:1 /9:3 /10:3 /11:11 /12:38 /13:52 /14:117 /15:236 /16:2414 /17:620 /18:599 /19:872 /20:3039 /21:1580 /22:2288 /23:2472 /24:17936 /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 854 5155 AMAZON-02, US 36914 528 552 KENET-AS, KE 14618 321 1008 AMAZON-AES, US 15169 269 948 GOOGLE, US 396982 268 2920 GOOGLE-CLOUD-PLATFORM, US 8075 126 713 MICROSOFT-CORP-MSN-AS-BLOCK, US 8895 107 110 ISU Internet Services Unit ISU, SA 2152 62 530 CENIC-2152, US 23024 36 97 OCDE, US 37182 35 36 TERNET, TZ Complete listing at https://bgp.nsrc.org/REN/PacWave/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:3 2:1 3:276 4:2 5:24 6:4 8:28 12:1 13:171 14:93 15:135 16:126 17:305 18:327 23:128 24:3 31:6 34:23 35:91 36:1 38:11 40:6 41:255 42:11 43:2 44:4 45:93 46:13 47:1 49:11 50:13 52:859 54:186 57:14 58:1 59:19 60:6 61:3 62:16 63:46 64:185 65:49 66:120 67:77 68:27 69:70 70:37 71:35 72:22 74:164 75:1 76:46 77:12 78:3 79:10 80:15 81:26 82:8 83:9 84:9 85:57 86:6 87:6 88:1 89:22 91:58 92:9 93:39 94:7 95:3 96:6 97:1 98:15 99:78 101:1 102:17 103:369 104:266 107:42 108:169 109:8 111:22 113:5 114:32 115:1 116:14 117:66 118:33 119:30 121:28 122:11 123:8 124:42 125:5 128:60 129:44 130:171 131:81 132:64 133:156 134:112 135:7 136:312 137:121 138:72 139:21 140:47 141:16 142:347 143:39 144:72 145:8 146:140 147:80 148:210 149:20 150:77 151:54 152:147 153:14 154:45 155:110 156:135 157:41 158:44 159:164 160:39 161:53 162:113 163:77 164:29 165:83 166:5 167:40 168:186 169:14 170:215 171:1 172:128 173:123 174:2 175:16 176:6 177:6 178:3 179:10 180:16 181:1 182:11 184:9 185:151 186:3 187:22 188:21 189:3 190:34 191:13 192:1712 193:342 194:137 195:89 196:147 197:337 198:644 199:405 200:270 201:38 202:670 203:470 204:451 205:219 206:253 207:355 208:169 209:280 210:221 211:3 212:160 213:24 214:9 216:268 217:17 218:23 219:6 220:16 222:2 223:15 End of report