[REN-BGP-stats-all] IPv4 R&E Routing Table Report - ESnet (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Fri Aug 25 22:20:37 UTC 2023
IPv4 R&E Routing Table Report 22:20 GMT Fri 25 Aug, 2023
IPv4 BGP Table (R&E) as seen at ESnet.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/ESnet/
Analysis Summary
----------------
BGP routing table entries examined: 19950
Prefixes after maximum aggregation (per Origin AS): 11576
Deaggregation factor: 1.72
Unique aggregates announced (without unneeded subnets): 12935
Number of IPv4 prefixes with a valid ROA: 5389
Number of IPv4 prefixes with an invalid ROA: 43
Number of IPv4 prefixes with no ROA: 14518
Total ASes present in the Internet Routing Table: 2949
Prefixes per ASN: 6.77
Origin-only ASes present in the Internet Routing Table: 2532
Origin ASes announcing only one prefix: 1121
Transit ASes present in the Internet Routing Table: 417
Transit-only ASes present in the Internet Routing Table: 87
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 3.8
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: 42498
Number of 32-bit ASNs visible in the Routing Table: 664
Prefixes from 32-bit ASNs in the Routing Table: 2065
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: 2
Number of addresses announced to Internet: 178937088
Equivalent to 10 /8s, 170 /16s and 93 /24s
Percentage of available address space announced: 4.8
Percentage of allocated address space announced: 4.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.5
Total number of prefixes smaller than registry allocations: 2495
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4424
Total APNIC prefixes after maximum aggregation: 2170
APNIC Deaggregation factor: 2.04
Prefixes being announced from the APNIC address blocks: 4408
Unique aggregates announced from the APNIC address blocks: 2493
APNIC Region origin ASes present in the Internet Routing Table: 513
APNIC Prefixes per ASN: 8.59
APNIC Region origin ASes announcing only one prefix: 214
APNIC Region transit ASes present in the Internet Routing Table: 56
Average APNIC Region AS path length visible: 3.9
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 187
Number of APNIC addresses announced to Internet: 35617536
Equivalent to 2 /8s, 31 /16s and 123 /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: 9698
Total ARIN prefixes after maximum aggregation: 5910
ARIN Deaggregation factor: 1.64
Prefixes being announced from the ARIN address blocks: 9659
Unique aggregates announced from the ARIN address blocks: 6580
ARIN Region origin ASes present in the Internet Routing Table: 1486
ARIN Prefixes per ASN: 6.50
ARIN Region origin ASes announcing only one prefix: 541
ARIN Region transit ASes present in the Internet Routing Table: 199
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 19
Number of ARIN region 32-bit ASNs visible in the Routing Table: 249
Number of ARIN addresses announced to Internet: 82292224
Equivalent to 4 /8s, 231 /16s and 174 /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: 3448
Total RIPE prefixes after maximum aggregation: 2766
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3505
Unique aggregates announced from the RIPE address blocks: 2885
RIPE Region origin ASes present in the Internet Routing Table: 656
RIPE Prefixes per ASN: 5.34
RIPE Region origin ASes announcing only one prefix: 287
RIPE Region transit ASes present in the Internet Routing Table: 103
Average RIPE Region AS path length visible: 3.6
Max RIPE Region AS path length visible: 12
Number of RIPE region 32-bit ASNs visible in the Routing Table: 136
Number of RIPE addresses announced to Internet: 54271744
Equivalent to 3 /8s, 60 /16s and 31 /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: 1465
Total LACNIC prefixes after maximum aggregation: 572
LACNIC Deaggregation factor: 2.56
Prefixes being announced from the LACNIC address blocks: 1464
Unique aggregates announced from the LACNIC address blocks: 782
LACNIC Region origin ASes present in the Internet Routing Table: 160
LACNIC Prefixes per ASN: 9.15
LACNIC Region origin ASes announcing only one prefix: 55
LACNIC Region transit ASes present in the Internet Routing Table: 27
Average LACNIC Region AS path length visible: 4.4
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: 4162048
Equivalent to 0 /8s, 63 /16s and 130 /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: 912
Total AfriNIC prefixes after maximum aggregation: 155
AfriNIC Deaggregation factor: 5.88
Prefixes being announced from the AfriNIC address blocks: 912
Unique aggregates announced from the AfriNIC address blocks: 193
AfriNIC Region origin ASes present in the Internet Routing Table: 45
AfriNIC Prefixes per ASN: 20.27
AfriNIC Region origin ASes announcing only one prefix: 24
AfriNIC Region transit ASes present in the Internet Routing Table: 8
Average AfriNIC Region AS path length visible: 3.2
Max AfriNIC Region AS path length visible: 9
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 25
Number of AfriNIC addresses announced to Internet: 2527744
Equivalent to 0 /8s, 38 /16s and 146 /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 579 2127 455 SINET-AS Research Organization of Infor
7497 434 180 23 CSTNET-AS-AP Computer Network Informati
1237 187 74 137 KREONET-AS-KR KISTI, KR
58647 178 18 2 KAGAWAU-AS Kagawa University, JP
7575 176 329 120 AARNET-AS-AP Australian Academic and Re
55824 117 18 11 NKN-CORE-NW NKN Core Network, IN
4538 112 2368 69 ERX-CERNET-BKB China Education and Rese
4621 68 37 9 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/ESnet/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
376 202 178 150 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
668 189 635 162 DNIC-AS-00668, US
18530 162 27 129 ISOMEDIA-1, US
2152 145 507 94 CSUNET-NW, US
11404 136 178 106 AS-WAVE-1, US
18558 136 18 4 NETBLK-RCOEK, US
81 126 473 31 NCREN, US
270 115 329 84 AS270, US
23024 113 7 17 OCDE, US
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 282 1903 248 DFN Verein zur Foerderung eines Deutsch
786 185 1767 182 JANET Jisc Services Limited, GB
8895 135 24 4 ISU Internet Services Unit ISU, SA
559 113 533 105 SWITCH Peering requests: peering at switch
1103 93 1246 82 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 27 73 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/ESnet/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 152 10 66 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 49 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/ESnet/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2018 361 319 71 TENET-1, ZA
327687 163 28 3 RENU, UG
36914 158 82 3 KENET-AS, KE
8094 48 48 15 PUKNET, ZA
327700 42 16 1 MoRENet, MZ
3208 32 2 1 ARN, DZ
37074 14 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/ESnet/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 579 2127 455 SINET-AS Research Organization of Infor
7497 434 180 23 CSTNET-AS-AP Computer Network Informati
2018 361 319 71 TENET-1, ZA
680 282 1903 248 DFN Verein zur Foerderung eines Deutsch
1916 221 176 42 Rede Nacional de Ensino e Pesquisa, BR
376 202 178 150 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
668 189 635 162 DNIC-AS-00668, US
1237 187 74 137 KREONET-AS-KR KISTI, KR
786 185 1767 182 JANET Jisc Services Limited, GB
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
7497 434 411 CSTNET-AS-AP Computer Network Information Cente
2018 361 290 TENET-1, ZA
5786 197 196 UPRENET, PR
1916 221 179 Rede Nacional de Ensino e Pesquisa, BR
58647 178 176 KAGAWAU-AS Kagawa University, JP
327687 163 160 RENU, UG
36914 158 155 KENET-AS, KE
18558 136 132 NETBLK-RCOEK, US
8895 135 131 ISU Internet Services Unit ISU, SA
55824 117 106 NKN-CORE-NW NKN Core Network, IN
Complete listing at https://bgp.nsrc.org/REN/ESnet/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/ESnet/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
134.208.0.0/16 Origin: 17711 NDHU-TW National Dong Hwa University, TW
134.208.0.0/16 Transit: 7539 TWAREN-TW National Center for High-perfo
202.58.231.0/24 Origin: 134096 EHEALTHNSW-AS-AP eHealth NSW, AU
202.58.231.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
Complete listing at https://bgp.nsrc.org/REN/ESnet/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 /9:0 /10:0 /11:0 /12:0
/13:0 /14:35 /15:122 /16:2028 /17:443 /18:444
/19:600 /20:925 /21:958 /22:1687 /23:1742 /24:10966
/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
36914 146 158 KENET-AS, KE
8895 130 135 ISU Internet Services Unit ISU, SA
30041 57 70 RACE, US
18530 55 162 ISOMEDIA-1, US
23024 52 113 OCDE, US
19194 43 45 JOVITA, US
327700 36 42 MoRENet, MZ
32440 34 49 LONI, US
16713 32 55 NOANET-WA, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1 5:15 6:4 8:5 12:1 13:4
14:88 18:51 23:42 24:9 31:8 35:4
37:3 38:27 40:1 41:89 42:10 44:7
45:47 46:6 47:1 49:9 50:9 52:4
58:1 59:19 60:4 61:3 62:7 63:89
64:102 65:22 66:67 67:55 68:18 69:50
70:2 71:1 72:32 74:56 76:49 77:9
78:3 79:10 80:13 81:26 82:5 83:6
84:5 85:41 86:7 87:5 89:10 91:43
92:1 93:6 94:6 95:2 96:5 97:3
98:4 101:2 102:32 103:228 104:109 107:17
108:14 109:6 111:16 114:23 116:6 117:61
118:32 119:18 121:26 122:8 123:8 124:39
125:4 128:87 129:47 130:89 131:59 132:58
133:151 134:106 136:200 137:132 138:11 139:5
140:43 141:2 142:50 143:21 144:14 145:2
146:198 147:66 148:193 149:12 150:45 151:14
152:141 153:14 154:31 155:63 156:67 157:16
158:37 159:115 160:32 161:64 162:47 163:79
164:10 165:45 166:3 167:14 168:117 169:8
170:78 172:6 173:8 174:8 175:26 177:5
179:12 180:15 181:1 182:1 184:3 185:54
186:3 187:19 188:14 189:3 190:19 191:13
192:1516 193:287 194:123 195:36 196:199 197:96
198:570 199:323 200:338 201:39 202:582 203:434
204:404 205:143 206:218 207:178 208:113 209:139
210:180 211:13 212:168 213:5 214:5 216:121
217:10 218:22 219:5 220:16 222:2 223:4
End of report
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